Free Online Calculators & Everyday Utilities
Percentages, compound interest, BMI, a scientific calculator, unit conversion, date and business-day maths, draws, party games and QR codes — free, instant.
28 tools
Calculators
Percentage calculatorPercent of a number, percent change, discountsCompound Interest CalculatorCompound interest on savings and investmentsScientific calculatorWork out sin, cos, log, roots, powers and factorialsBMI calculatorWork out BMI and a healthy weight for your heightUnit converterConvert length, weight and temperature units
Date & Time
Age calculatorExact age in years, months and days, plus your next birthdayAdd or subtract daysFind the date N days, weeks or months awayBusiness Days CalculatorCount working days, skipping weekends and holidaysDate difference calculatorCount days, weeks and years between two datesTime zone converterWhat time is it there when it's this time hereCountdown timer & stopwatchCountdown with an alarm, stopwatch with laps
Random
Spin the wheelSpin a wheel to pick a random name or prizeRandom number generatorPick random numbers for raffles and giveawaysBingo callerCall 75 or 90 ball bingo, read aloud, check ticketsFlip a coinHeads or tails? Flip a coin to decide in a secondRandom team generatorSplit a list of names into even random teamsDice rollerRoll 1–6 dice and get the total right awayTournament drawSeeded group draw or knockout pairingsRandom seating chartRandom classroom seating, with seats you can lockScratch cardScratch the silver layer to reveal a prizeRandom letter generatorPick random letters for word games and quizzes