Calculators that show their work
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Popular calculators
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Tide Calculator
Pick a coastal station and a date to see NOAA's predicted high and low tide times and heights for that day, the tidal range between them, and whether the Moon phase points to a bigger spring tide or a smaller neap tide.
Radish Growth Stages Day by Day: Life Cycle Pictures
Radish growth stages, day by day: the seed swells on day 1, sprouts on days 2–3, opens its seed leaves by day 3–5, and the root is ready to pull in as little as 21–30 days — the fastest common vegetable to grow.
Tomato Growth Stages & Life Cycle: Seed to Harvest
A tomato seed sprouts in 5–10 days in warm soil, then takes roughly 100–120 days from sowing (60–85 days after transplanting) to reach a ripe, harvestable fruit, passing through seedling, vegetative growth, flowering and fruit-ripening stages along the way.
Password & Passphrase Generator
A strong password is long and random: 16 or more characters mixing letters, numbers and symbols. For something you must remember, use a passphrase of 5 or more random words. Both are generated in your browser using your device's secure random source and never sent anywhere.
Sunrise & Sunset Calculator
Sunrise and sunset times depend on your latitude, longitude and the date. In London on the June solstice the sun rises at about 4:43 AM and sets at about 9:21 PM, giving roughly 16 hours 38 minutes of daylight.
Pregnancy Due Date Calculator
Your estimated due date is 280 days (40 weeks) after the first day of your last period. For example, a last period starting March 1 gives a due date of about December 6.
vCard QR Code Generator
Fill in a name, phone number and email, and this tool builds a QR code that a phone's camera app recognises as a contact card — scanning it offers to add the person straight to Contacts, no app or typing required.
Sunflower Growth Stages & Life Cycle: Seed to Harvest
Sunflower growth stages: the seed sprouts in 5–10 days, the stem shoots up while young plants track the sun, a bud forms at around 6–9 weeks, the flower opens at about 9–13 weeks, and the seeds are ripe 80–120 days after sowing.
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Calculators
See all →Online Calculator with Steps
Type an expression like 12 × (3 + 4) ÷ 2 + 5 and press =. It follows the order of operations (brackets, powers, multiply and divide, then add and subtract) and animates each step until only the answer is left.
Pregnancy Due Date Calculator
Your estimated due date is 280 days (40 weeks) after the first day of your last period. For example, a last period starting March 1 gives a due date of about December 6.
BMI Calculator
BMI is your weight in kilograms divided by your height in metres squared. A 70 kg adult who is 1.70 m tall has a BMI of 24.2, which is in the healthy range of 18.5 to 24.9.
Calorie Calculator (TDEE)
Your daily calorie need is your basal metabolic rate (BMR) multiplied by an activity factor. For a 30-year-old man who is 180 cm, weighs 80 kg and exercises 3 to 5 days a week, that is about 2,760 calories a day.
Ovulation Calculator
Ovulation usually happens about 14 days before your next period starts. In a 28-day cycle that is cycle day 14, and your most fertile days are the five days before it plus ovulation day itself.
Body Fat Calculator
The US Navy method estimates body fat from your neck, waist and (for women) hip measurements, using a formula built from log-scaled circumference differences. A 32-inch waist and 15-inch neck at 5'8" puts a man at roughly 14–15% body fat, in the athletic-to-fitness range.
Macro Calculator
Multiply your daily calorie target by each macro's percentage, then divide by its calories per gram: protein and carbs are 4 kcal/g, fat is 9 kcal/g. On a 2,000-calorie, 30/40/30 split, that's 150 g protein, 200 g carbs and 67 g fat.
One-Rep Max Calculator
Your estimated one-rep max is the weight you lifted × (1 + reps ÷ 30). Lifting 100 kg for 5 reps gives an estimated 1RM of about 116.7 kg.
Water Intake Calculator
A common baseline is 30–35 ml of water per kilogram of body weight per day, plus more for exercise and hot weather. A 70 kg adult with 30 minutes of exercise in a temperate climate needs roughly 2.8 litres a day.
Ideal Weight Calculator
The Devine formula estimates ideal weight from height alone: 50 kg (men) or 45.5 kg (women) at 5 feet tall, plus 2.3 kg for every inch above that. At 175 cm, that's about 70.5 kg for a man.
Heart Rate Zone Calculator
Using the Karvonen method, your target zones are based on your heart rate reserve — the gap between your estimated max heart rate (220 minus your age) and your resting heart rate.
Temperature Converter (°C, °F, K)
To convert Celsius to Fahrenheit, multiply by 9/5 (1.8) and add 32: 20 °C is 68 °F. To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9.
Heat Index Calculator
The heat index combines air temperature and humidity to show how hot it feels. At 90 °F (32 °C) and 70% humidity it feels like about 106 °F (41 °C), which is in the Danger range.
Wind Chill Calculator
Wind chill shows how cold the wind makes exposed skin feel. At 20 °F (−7 °C) with a 15 mph (24 km/h) wind it feels like about 6 °F (−14 °C).
Dew Point Calculator
The dew point is the temperature at which air becomes saturated and dew forms. At 25 °C (77 °F) and 60% humidity the dew point is about 16.7 °C (62 °F), which feels slightly humid.
Frost Date Calculator
Pick your nearest city to see the typical date of the last spring frost, the first fall frost, and how many frost-free days usually fall in between — plus, if you enter a date, the estimated chance frost still lands on it.
Sunrise & Sunset Calculator
Sunrise and sunset times depend on your latitude, longitude and the date. In London on the June solstice the sun rises at about 4:43 AM and sets at about 9:21 PM, giving roughly 16 hours 38 minutes of daylight.
Wind Speed Converter & Beaufort Scale
To convert m/s to km/h, multiply by 3.6. To convert km/h to mph, multiply by 0.6214. A 10 m/s wind is 36 km/h, 22.4 mph or 19.4 knots, which is Force 5 (a fresh breeze) on the Beaufort scale.
Absolute Humidity Calculator
Absolute humidity is the mass of water vapour in each cubic metre of air. At 20 °C and 50% relative humidity, air holds about 8.6 g of water per m³, half of the 17.3 g/m³ it could hold when saturated.
Rainfall Converter & Rain Volume Calculator
One millimetre of rain over one square metre is exactly one litre. One inch of rain is 25.4 mm, and over one acre it is about 27,154 US gallons (102,790 litres).
Moon Phase Calculator
Enter any date to see the Moon's phase, how much of it is illuminated, and how many days until the next full and new moons — worked out from how many days have passed since a known new moon, divided by the Moon's roughly 29.53-day cycle.
Tide Calculator
Pick a coastal station and a date to see NOAA's predicted high and low tide times and heights for that day, the tidal range between them, and whether the Moon phase points to a bigger spring tide or a smaller neap tide.
Age Calculator
Your age is the number of complete years, months and days between your date of birth and today. Someone born on 15 May 1990 is 36 years, 4 months and 6 days old on 21 September 2026.
Days Between Dates Calculator
Subtract the earlier date from the later one to get the days between them. From 1 January to 25 December 2026 is 358 days, or 359 if you count both the first and last day.
Time Zone Calculator & World Clock
Pick a base city and a date and time, then pick a second city to compare it to. You'll instantly see the equivalent local time there, how many hours ahead or behind it is, and whether that puts it on a different calendar day.
Unit Converter
Pick a type, enter a value and choose the units. For example, 1 mile is 1.609 kilometres, 1 kilogram is 2.205 pounds and 1 US gallon is 3.785 litres.
Area Calculator & Size Comparison
Enter an area and a unit, and instantly see how many football pitches, tennis courts or parking spaces it's equivalent to, alongside the exact conversion between area units.
Tip Calculator & Bill Splitter
To calculate a tip, multiply the bill by the tip percent as a decimal. An 18% tip on a $50 bill is 0.18 × 50 = $9, for a total of $59. Split three ways, that is $19.67 each.
GPA Calculator
GPA is the total grade points across your courses (each grade's point value × its credit hours) divided by your total credit hours. Three courses graded A, B+ and B at 3, 3 and 4 credits work out to a 3.39 GPA.
Final Grade Calculator
Your overall grade is each category's score multiplied by its share of the total weight, added together. Leave one category blank — like a final exam — and enter a target grade instead, and the calculator solves for the score that category needs.
Time Duration Calculator
To find the time between two clock times, convert both to minutes past midnight and subtract. From 9:00 AM to 5:30 PM is 8 hours 30 minutes.
Fraction Calculator
To add or subtract fractions, first convert them to a common denominator. To multiply, multiply straight across. To divide, multiply by the second fraction flipped upside down. This calculator shows every step and simplifies the result.
Roman Numeral Converter
Roman numerals are built from I (1), V (5), X (10), L (50), C (100), D (500) and M (1000), taking the largest values first — 1994 becomes MCMXCIV (1000 + 900 + 90 + 4).
Electrical Calculator (Volts, Amps, Watts, Ohms)
Enter any two of voltage (V), current (A), power (W) or resistance (Ω) and the calculator finds the other two using Ohm's law (V = I × R) and Watt's law (P = V × I). A 120 V circuit drawing 10 A is using 1,200 W.
Electricity Cost Calculator
Multiply the appliance's kilowatts by the hours used and by your electricity rate to get the cost. A 1,500 W heater run 2 hours a day at $0.16 per kWh costs about $0.48 a day, or roughly $14.40 a month.
Power Load Calculator
Add up each appliance's watts to find your running load, add headroom for the largest motor starting up to size a generator, project your daily energy use into a monthly usage and cost, and multiply it by how many backup days you want to size a battery bank or solar array.
Fuel Cost Calculator
Trip cost = distance ÷ fuel efficiency × fuel price. A 300-mile trip at 30 mpg with fuel at $3.50 a gallon costs about $35.
Interactive Periodic Table
The periodic table arranges all 118 known elements by atomic number, so elements in the same column (group) have similar chemistry. Hover or tap any element to see its atomic mass, electron configuration and physical properties.
Molar Mass Calculator
Molar mass is the sum of the atomic masses of every atom in the formula. Glucose, C6H12O6, is 6 × 12.011 + 12 × 1.008 + 6 × 15.999 = 180.156 g/mol.
Grams to Moles Calculator
To convert grams to moles, divide the mass by the molar mass. 36 g of water is 36 ÷ 18.015 g/mol ≈ 2.00 mol, and multiplying by Avogadro's number gives about 1.20 × 10²⁴ molecules.
Percent Composition Calculator
Percent composition is each element's share of the molar mass. In Fe2O3, iron contributes 2 × 55.845 = 111.69 of the 159.687 g/mol, so it is 111.69 ÷ 159.687 × 100 = 69.94% iron and 30.06% oxygen.
Empirical Formula Calculator
Assume 100 g, convert each element's grams to moles, divide by the smallest, then scale to whole numbers. 40.00% C, 6.71% H and 53.29% O gives CH2O, and with a molar mass of 180.16 g/mol the molecular formula is C6H12O6.
Molarity Calculator
Molarity is moles of solute per liter of solution. 5.844 g of NaCl is 0.1 mol, so dissolved to make 500 mL (0.5 L) of solution it gives 0.1 ÷ 0.5 = 0.2 M.
Ideal Gas Law Calculator
The ideal gas law is PV = nRT. With R = 0.082057 L·atm/(mol·K), one mole of gas at 0 °C (273.15 K) and 1 atm takes up 1 × 0.082057 × 273.15 ÷ 1 = 22.41 L.
pH Calculator
pH = −log₁₀[H⁺]. A hydrogen ion concentration of 1 × 10⁻³ M gives pH 3, which is acidic. At 25 °C, pH + pOH = 14, so its pOH is 11.
Half-Life Calculator
The amount left is N = N₀ × (½)^(t ÷ t½). Carbon-14 has a half-life of 5,730 years, so a sample with 25% of its carbon-14 left has gone through 2 half-lives and is about 11,460 years old.
Salary to Hourly Calculator
Multiply an hourly wage by hours per week and paid weeks per year to get a yearly salary: $25 an hour × 40 hours × 52 weeks = $52,000 a year, or about $4,333 a month.
Discount Calculator
To find a sale price, multiply the original price by the percent off and subtract it: 25% off $80 is $80 × 0.25 = $20 off, so you pay $60.
Sales Tax Calculator
To add sales tax, multiply the price by the tax rate and add the result: $50 at 8.25% is $50 × 0.0825 = $4.13 in tax, for a total of $54.13.
Running Pace Calculator
Pace is time divided by distance. A 5K (3.11 miles) in 25:00 is 1,500 seconds ÷ 3.11 = 8:03 per mile, or 5:00 per kilometer.
Significant Figures Calculator
Every nonzero digit is significant, zeros between them are significant, leading zeros are not, and trailing zeros count only after a decimal point. So 0.004560 has 4 significant figures: 4, 5, 6 and the final 0.
Concrete Calculator
Multiply length × width × thickness, with all three in feet, then divide by 27 for cubic yards. A 10 × 10 ft slab 4 inches thick is 33.3 cubic feet; with 10% extra that's 1.36 cubic yards, or 62 bags of 80 lb premix.
Average Calculator
The mean is the sum divided by the count. For 2, 4, 4, 4, 5, 5, 7, 9 the sum is 40 and there are 8 values, so the mean is 5. The median (middle value) is 4.5, the mode (most common) is 4 and the range is 9 − 2 = 7.
Standard Deviation Calculator
Standard deviation measures how spread out numbers are around their mean. For 2, 4, 4, 4, 5, 5, 7, 9 the mean is 5 and the squared deviations add up to 32, giving a population standard deviation of √(32 ÷ 8) = 2 and a sample standard deviation of √(32 ÷ 7) = 2.138.
Ratio Calculator
To solve a proportion, cross-multiply. In 3 : 4 = 15 : x, 3 × x = 4 × 15, so x = 60 ÷ 3 = 20. To simplify a ratio, divide every term by their greatest common divisor: 24 : 36 ÷ 12 = 2 : 3.
Quadratic Equation Solver
The quadratic formula is x = (−b ± √(b² − 4ac)) ÷ 2a. For x² − 5x + 6 = 0, the discriminant is 25 − 24 = 1, so x = (5 ± 1) ÷ 2, giving x = 3 or x = 2.
Pythagorean Theorem Calculator
In a right triangle, a² + b² = c², where c is the hypotenuse. With legs of 3 and 4, c = √(9 + 16) = √25 = 5. The angles are 36.87° and 53.13°.
Volume Calculator
Each shape has its own formula. A cylinder's volume is πr²h, so one with a 3 cm radius and 10 cm height holds π × 3² × 10 = 282.74 cm³, or 282.74 mL.
Number Base Converter
To convert decimal to binary, divide by 2 repeatedly and read the remainders from the last to the first. 255 in binary is 11111111, in octal 377 and in hexadecimal FF.
Inflation Calculator
Multiply the amount by the ratio of the two years' Consumer Price Index values. $100 in 2000 had the same buying power as about $182 in 2024, because the CPI rose from 172.2 to 313.7, an average of 2.53% a year.
Credit Card Payoff Calculator
A $5,000 balance at 22% APR takes 34 months to pay off at $200 a month and costs $1,749.88 in interest. To clear it in 24 months instead you'd pay $259.40 a month and $1,225.32 in interest.
Car Loan Calculator
A $35,000 car with $5,000 down and 7% sales tax means financing $32,450. At 6.5% APR over 60 months that's $634.92 a month, with $5,645.29 in total interest.
Retirement Calculator
Divide your yearly retirement spending by your withdrawal rate. Spending $40,000 a year at the 4% rule needs $1,000,000. Starting from $50,000 and saving $20,000 a year at a 5% real return, you'd get there in 24 years.
Profit Margin Calculator
Margin is profit divided by price; markup is profit divided by cost. An item that costs $60 and sells for $100 makes $40 profit: a 40% margin and a 66.67% markup.
ROI Calculator
ROI is the gain divided by the amount invested. $10,000 growing to $16,000 is a $6,000 gain, a 60% ROI. Over 5 years that's a compound annual growth rate (CAGR) of 9.86%.
BMR Calculator
Your BMR is the energy your body burns at complete rest. By the Mifflin-St Jeor equation, a 30-year-old woman who is 170 cm and 70 kg burns about 1,452 calories a day before any movement: 10 × 70 + 6.25 × 170 − 5 × 30 − 161.
Sleep Calculator
Count back in 90-minute sleep cycles from your alarm, plus about 15 minutes to fall asleep. To wake at 7:00 AM after 5 cycles (7.5 hours), go to bed at 11:15 PM; for 6 cycles (9 hours), 9:45 PM.
Blood Alcohol (BAC) Calculator
The Widmark formula estimates BAC as the alcohol drunk divided by body weight times a body-water factor, minus about 0.015% per hour. A 180 lb man who has 4 standard drinks over 2 hours is at roughly 0.071%. This is an estimate only: never use it to decide whether to drive.
Calories Burned Calculator
Calories burned = METs × body weight in kg × hours. Running at 6 mph is 9.8 METs, so a 70 kg person running for 30 minutes burns about 9.8 × 70 × 0.5 = 343 calories.
Paint Calculator
Multiply the room's perimeter by the wall height, subtract doors and windows, multiply by the coats and divide by the paint's coverage. A 12 × 12 ft room with 8 ft walls, a door and two windows is 333 sq ft; two coats at 350 sq ft per gallon needs 1.9 gallons, so buy 2.
Flooring & Tile Calculator
Multiply the room's length by its width, then add about 10% for cuts and waste. A 12 × 15 ft room is 180 sq ft; with 10% extra that's 198 sq ft, or 10 boxes of flooring at 20 sq ft per box, or 198 tiles of 12 × 12 inches.
AC BTU Calculator
Room air conditioners need roughly 20 BTU per square foot. A 12 × 15 ft room (180 sq ft) needs about 6,000 BTU by the ENERGY STAR chart, or 6,600 BTU if it's very sunny.
Percentage Calculator
To find a percentage of a number, divide the percent by 100 and multiply by the number: 15% of 200 is 0.15 × 200 = 30.
Compound Interest Calculator
Compound interest means you earn interest on your interest. $10,000 at 7% for 20 years with no deposits grows to about $40,400 with monthly compounding.
Loan & Mortgage Calculator
A $300,000 loan at 6.5% over 30 years costs about $1,896 a month, and roughly $382,600 of that total is interest.
Savings Goal Calculator
To hit a savings goal, this calculator works backwards from compound interest: enter your goal, starting balance, interest rate and either a deadline (to find the monthly deposit needed) or a monthly deposit (to find how long it will take).
Currency Converter
Enter an amount and a currency, and see it converted into a dozen major world currencies at once, using the latest official exchange rates — updated daily from the European Central Bank.
Tools
See all →QR Code Generator
Type or paste a link or text, pick your colours, and download the QR code as a PNG or SVG. It is generated in your browser and nothing is uploaded.
vCard QR Code Generator
Fill in a name, phone number and email, and this tool builds a QR code that a phone's camera app recognises as a contact card — scanning it offers to add the person straight to Contacts, no app or typing required.
Barcode Generator
Choose a format, enter your number or text, and download the barcode. Code 128 accepts most text; EAN-13 and UPC-A need exactly 12 or 11 digits plus an automatic check digit.
Password & Passphrase Generator
A strong password is long and random: 16 or more characters mixing letters, numbers and symbols. For something you must remember, use a passphrase of 5 or more random words. Both are generated in your browser using your device's secure random source and never sent anywhere.
Word & Character Counter
Paste or type your text to see live counts of words, characters, sentences and paragraphs, plus how long it takes to read or read aloud at an average pace.
Case Converter
Type or paste your text once to see it converted into ten common cases at the same time — from Title Case for headings to camelCase and snake_case for code — and copy any one with a single click.
Typing Speed Test
Type the passage shown to see your speed in words per minute and your accuracy update live, with a colour-coded keyboard showing exactly which finger to use for each key as you go.
Random Number Generator
Set a minimum, a maximum and how many numbers you want, then press Generate. Numbers are produced in your browser using a cryptographically secure random source, the same kind used for encryption.
Lorem Ipsum Generator
Choose paragraphs, sentences or words and how many you need, then copy the generated placeholder text straight into your design or document.
Unix Timestamp Converter
A Unix timestamp counts seconds (or milliseconds) since midnight UTC on January 1, 1970. Enter a timestamp to see its date, or pick a date to get its timestamp.
Color Converter
Pick a color, or type a hex code, RGB values or HSL values — all three formats update together instantly, each with its own copy button.
Color Palette Generator
Pick a base color and a harmony type to generate a matching palette, or skip straight to browsing a standard palette like Material Design, Tailwind CSS, Flat UI or Pastel — click any swatch to copy its hex code or use it as the new base color.
Guides
See all →The Nitrogen Cycle, Explained for Gardeners
Nitrogen moves through five stages in a garden: bacteria fix nitrogen gas from the air into ammonium, other bacteria convert that to nitrate, plants absorb it, decomposers return it to the soil when plants and animals die, and denitrifying bacteria release some of it back into the air — completing the cycle.
Vegetable Growth Stages Chart: Seed to Harvest Times
Radishes are ready in just 21–30 days and leaf lettuce in about 45–55; beans, peas, cucumbers and zucchini take around 45–70 days, carrots 60–80, corn and potatoes 70–120 and pumpkins 90–120; tomatoes and peppers, started indoors, need about 100–150 days from seed.
Tomato Growth Stages & Life Cycle: Seed to Harvest
A tomato seed sprouts in 5–10 days in warm soil, then takes roughly 100–120 days from sowing (60–85 days after transplanting) to reach a ripe, harvestable fruit, passing through seedling, vegetative growth, flowering and fruit-ripening stages along the way.
Carrot Growth Stages, Life Cycle & Time to Maturity
Carrot seeds are unusually slow to germinate, typically taking 14–21 days, then the root spends 60–80 days total bulking up underground before it's ready to harvest — most of that growth is invisible from above ground.
Radish Growth Stages Day by Day: Life Cycle Pictures
Radish growth stages, day by day: the seed swells on day 1, sprouts on days 2–3, opens its seed leaves by day 3–5, and the root is ready to pull in as little as 21–30 days — the fastest common vegetable to grow.
Bean Growth Stages & Life Cycle: Seed to Harvest
Bean growth stages: the seed swells in 1–3 days, a hooked stem breaks the soil around day 4–8, flowers open at about 5–7 weeks, and pods are ready to pick 50–60 days after sowing for bush beans (60–70 for pole beans).
Pea Growth Stages & Life Cycle: Seed to Harvest
Pea growth stages: the seed sprouts in 7–14 days in cool soil, tendrils start climbing at 2–5 weeks, flowers open at around 5–7 weeks, and pods are ready to pick about three weeks later — 55–70 days after sowing.
Lettuce Growth Stages & Life Cycle: Seed to Harvest
Lettuce growth stages: the seed sprouts in 2–10 days, baby leaves are ready in about 25–30 days, leaf lettuce reaches full size in 45–55 days and heading types in 55–80 days, before heat makes the plant bolt, flower and set seed.
Cucumber Growth Stages & Life Cycle: Seed to Harvest
Cucumber growth stages: the seed sprouts in 3–10 days in warm soil, vines run at 3–6 weeks, male then female flowers open at around 5–7 weeks, and fruit is ready to pick 50–70 days after sowing.
Pepper Growth Stages & Life Cycle: Seed to Harvest
Pepper growth stages: the seed sprouts in 7–21 days in warm soil, seedlings grow indoors for 8–10 weeks, flowers open a few weeks after transplanting, green fruit is ready 60–90 days after transplanting (about 120–150 days from seed), and full colour takes another 2–4 weeks.
Zucchini Growth Stages & Life Cycle: Seed to Harvest
Zucchini growth stages: the seed sprouts in 5–10 days in warm soil, the plant grows into a large bush over 3–6 weeks, male then female flowers open at around 5–7 weeks, and the first fruit is ready 45–60 days after sowing.
Pumpkin Growth Stages & Life Cycle: Seed to Harvest
Pumpkin growth stages: the seed sprouts in 5–10 days, vines spread over weeks 3–8, male then female flowers open at around 7–10 weeks, and the fruit swells, turns colour and hardens until it's ready to cut 90–120 days after sowing.
Sunflower Growth Stages & Life Cycle: Seed to Harvest
Sunflower growth stages: the seed sprouts in 5–10 days, the stem shoots up while young plants track the sun, a bud forms at around 6–9 weeks, the flower opens at about 9–13 weeks, and the seeds are ripe 80–120 days after sowing.
Strawberry Growth Stages & Life Cycle: Seed to Harvest
Strawberry growth stages: seeds sprout in 1–6 weeks, the plant forms a leafy crown, sends out runners in summer, rests through winter, flowers in spring and ripens berries about 30 days after flowering — 4–12 months from seed, then cropping for about 3–4 years.
Potato Growth Stages & Life Cycle: Seed to Harvest
Potato growth stages: a planted seed potato sprouts and breaks the surface in 2–4 weeks, leafy growth follows, tubers start forming at around 5–8 weeks, plants flower, the tubers bulk up, and they're ready to dig 70–120 days after planting.
Corn Growth Stages & Life Cycle: Seed to Harvest
Corn growth stages: the kernel sprouts in 7–10 days, the plant adds leaves and grows fast for about two months, tassels shed pollen at around 7–10 weeks, silks catch it a few days later, and sweet corn is ready about three weeks after silking — 70–100 days from sowing.
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