Calculators

Work out fertilizer quantity and bag count from field area and kg/ha application rate.

Calculate irrigation water volume in m³ and litres from field area and depth in mm.

Calculate theoretical and expected plant population from land area and row × plant spacing — per acre, per hectare, or any field size.

Calculate seed quantity and optional cost from field area and kg/ha seed rate.

Calculate the mean, sum, median, and range from a list of numbers.

Perform 2×2 and 3×3 matrix operations — add, subtract, multiply, determinant, inverse, transpose, and scalar multiply.

Parse chemical formulas, compute molar mass, and convert between mass, moles, and molecule count.

Calculate a percentage of any number, plus the value after adding or subtracting that percent.

Simplify ratios and scale either side while keeping the same proportion.

Evaluate advanced expressions with trig, logarithms, powers, and constants — degrees or radians, with calculation history.

Compute mean, median, mode, standard deviation, variance, quartiles, SEM, and z-scores from datasets.

Calculate the units and revenue needed to cover fixed and variable costs.

Calculate profit, profit margin percentage, and markup percentage from cost and revenue.

Calculate exact age in years, months, and days from a birth date — leap-year aware.

Calculate days between two dates with a years, months, and days breakdown.

Count weekdays between two dates, skip custom holidays, or add working days. Saturday–Sunday, Friday–Saturday, and Sunday-only weekends.

Calculate IPv4 and IPv6 networks, masks, usable hosts, binary, and prefix splits from CIDR — privately in your browser.

Calculate cumulative GPA from semester GPAs and optional credit totals.

Convert marks scored out of a total into a percentage, with a simple indicative grade band.

Calculate a credit-weighted GPA from course grade points — works with 4.0 or 10-point scales.

Calculate the marks you still need on remaining exams to reach a target overall percentage.

Solve Ohm's law, kinematics (SUVAT), force, kinetic energy, and convert scientific units — pressure, energy, force, frequency, power.

Calculate sale price and savings from an original price and discount percentage.

Estimate trip fuel cost from distance, mileage/efficiency, and price per litre.

Convert hourly pay to weekly, monthly, and annual income from your schedule.

Premium love compatibility studio — scores, radar chart, couple type, nicknames, stories, date ideas, and a shareable result card. For entertainment only.

Calculate sales tax and total price from a pre-tax amount and tax rate.

Calculate tip amount, total bill with tip, and per-person share for any tip percentage.

Estimate future value and interest earned with compound interest for any principal, rate, term, and compounding frequency.

Calculate fixed deposit maturity amount and interest with compound interest.

Calculate equated monthly installment (EMI), total interest, and total payment for a fixed-rate loan.

Calculate maturity amount and interest on a lump-sum deposit with simple or compound interest, using tenure in years and months.

Convert CTC between monthly and annual and estimate take-home after deductions.

Calculate simple interest and maturity amount from principal, annual rate, and time in years.

Estimate SIP maturity value, total invested amount, and gains from monthly investments and expected returns.

Calculate BMI from height and weight, see WHO adult categories, and read the formula. Free, clear, informational only.

Estimate basal metabolic rate with Mifflin–St Jeor and see rough daily calorie needs by activity level.

Estimate daily calorie needs from BMR and activity, with a simple goal adjustment and macro split.

Estimate body surface area (m²) with the Mosteller formula from height and weight.

Calculate prescription days supply from quantity dispensed, dose amount, and doses per day.

Use C₁V₁ = C₂V₂ to find how much stock and diluent you need for a target concentration and volume.

Calculate a weight-based drug dose (mg/kg) and daily total from patient weight and frequency.

Calculate IV pump rate (mL/hr) and gravity drip rate (gtt/min) from volume, time, and drop factor.

Convert an ordered mg dose into mL using the liquid’s concentration (mg/mL).

Estimate pediatric doses with Clark's rule, Young's rule, or mg/kg weight-based dosing.

Add or extract GST from an amount at any tax rate — exclusive and inclusive modes supported.

Calculate VAT on exclusive or inclusive prices — net, tax, and gross.

Convert bits, bytes, KB, MB, GB, and IEC sizes (KiB, MiB, GiB). Compare SI 1000 vs binary 1024 prefixes.