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Every calculation,
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From tip splitting to loan EMIs — accurate tools that show the formula and the steps, not just the answer.
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General & Everyday Calculators for daily life — percentages, tips, dates and quick math. 14 tools
Percentage Calculator Find a percent of a number, percentage change, and what % one number is of another. Tip Calculator Split a bill fairly and work out the tip per person in seconds. Discount Calculator Work out the sale price and how much you save from a percentage discount. Average Calculator Find the mean, sum and count of any list of numbers. Ratio Calculator Solve and scale ratios, and reduce them to simplest form. Age Calculator Find an exact age in years, months and days from a date of birth. Date Difference Count the days, weeks and months between any two dates. Basic Calculator A fast everyday calculator — add, subtract, multiply, divide, percentages and memory keys. Scientific Calculator Trigonometry, logarithms, powers, roots, factorials and constants — with degree/radian modes. Fraction Calculator Add, subtract, multiply and divide fractions, with the result simplified to lowest terms. GCF & LCM Greatest common factor and least common multiple of a set of whole numbers. Prime Number Checker Check whether a number is prime, show its prime factorisation and the next prime. Random Number Generator Generate random numbers in a range. Adjust any field (or hit Reset) to roll again. Rounding Calculator Round a number to a chosen number of decimal places, or up/down/towards zero.
Unit Converters Every measurement system — length, weight, temperature and beyond. 14 tools
Length Converter Convert between mm, cm, m, km, inches, feet, yards and miles. Weight Converter Convert between grams, kilograms, pounds, ounces and stone. Temperature Converter Convert between Celsius, Fahrenheit and Kelvin. Area Converter Convert between m², km², square feet, acres and hectares. Volume Converter Convert between millilitres, litres, cups, pints and gallons. Speed Converter Convert between km/h, mph, m/s and knots. Data Storage Converter Convert between bits, bytes, KB, MB, GB and TB. Pressure Converter Convert between pascals, bar, psi, atm, mmHg and Torr. Energy Converter Convert between joules, calories, watt-hours, kWh and BTU. Power Converter Convert between watts, kilowatts, horsepower and BTU/h. Angle Converter Convert between degrees, radians, gradians, arcminutes and turns. Cooking Converter Convert between teaspoons, tablespoons, cups, fluid ounces and millilitres. Currency Converter Convert between major world currencies using live mid-market exchange rates. Fuel Economy Converter Convert between MPG (US/UK), km/L and L/100km — including the inverse L/100km scale.
Finance & Business Loans, investing, tax and business math for everyday money decisions. 9 tools
Loan EMI Calculator Calculate your Equated Monthly Instalment, total interest and full amortisation schedule for any loan. Simple Interest Interest earned on principal only, with no compounding. Compound Interest See how an investment grows with compounding over time. Mortgage Calculator Estimate monthly home-loan repayments and total interest. GST / VAT Calculator Add or remove sales tax from any amount. ROI Calculator Return on investment as a percentage and net gain. CAGR Calculator Compound annual growth rate of an investment. Savings & FD Maturity value of a fixed deposit or recurring savings. Profit Margin Gross profit and margin from cost and selling price.
Health & Fitness BMI, calories, body composition and wellbeing tools. 8 tools
BMI Calculator Body Mass Index and weight category from height and weight. BMR Calculator Basal metabolic rate — calories burned at complete rest. TDEE Calculator Total daily energy expenditure from BMR and activity level. Calorie Calculator Daily calories to maintain, lose or gain weight. Ideal Weight Healthy weight range for your height. Body Fat % Estimate body-fat percentage from BMI, age and sex. Water Intake Daily hydration target based on body weight. Pregnancy Due Date Estimated delivery date from the last menstrual period.
Mathematics Algebra, geometry and trigonometry with worked solutions. 4 tools
Statistics Descriptive stats, spread and probability. 5 tools
Mean, Median & Mode Central tendency of a data set in one place. Standard Deviation Variance and standard deviation, sample or population. Z-Score Calculator Standardise a value against a distribution. Probability Single and combined event probabilities. Permutations & Combinations nPr and nCr for counting problems.
Computer Science Number bases, hashing, encoding and networking. 4 tools
Miscellaneous Specialty and home tools — paint, tiles, recipes. 4 tools
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