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A diverse collection of tools for everyday life, from date and time calculations to conversions and more.
Find your age in years, months, and days.
Date arithmetic.
Time math.
Work hours.
Weekly timesheet.
Zone converter.
Time span.
Count days.
Find weekday.
Concrete bags.
Area calc.
Rise & run.
Shingles.
Floor tiles.
Garden mulch.
Driveway gravel.
AC sizing.
Convert km, m, cm, mm, miles, yards, feet, inches.
Convert kg, g, lbs, oz, tons.
Convert Celsius, Fahrenheit, Kelvin.
Convert liters, gallons, cups, ml.
Convert sq meters, sq feet, acres, hectares.
Convert mph, kph, knots, mach.
Convert seconds, minutes, hours, days, years.
Watts, Kilowatts, Horsepower.
Joules, Calories, BTU.
PSI, Bar, Pascal.
Bits, Bytes, GB, TB.
Newtons, lbf.
Degrees, Radians.
MPG, L/100km.
Estimate the fuel cost for a trip.
Calculate your vehicle's fuel efficiency.
Calculate HP from Torque/RPM.
Calculate mileage reimbursement.
Tire dimensions and comparisons.
Calculate molar mass from formulas.
Calculate solution concentration.
Calculate density, mass, or volume.
Calculate mass from density.
Calculate energy cost.
Convert shoe sizes.
Calculate your Grade Point Average.
Calculate your course grade with weights.
Estimate your bra band and cup size.
Calculate tip and split bill.
Calculate sleep cycles.