Everyday Math calculators

Percentages, percent change, discounts, tips, fractions, ratios, averages, rounding and unit conversions, each with the working shown.

• Area ConverterConvert between square feet, square metres, square yards, acres, hectares and other area units.
• Average CalculatorPaste a list of numbers to get the mean, median, mode, range and standard deviation.
• Cubic Feet CalculatorVolume of a box, room or cylinder in cubic feet, with cubic yards, cubic metres, litres and gallons.
• Discount CalculatorSale price and savings for a percent-off deal, including "extra % off" stacked discounts and sales tax.
• Fraction CalculatorAdd, subtract, multiply or divide fractions and mixed numbers, simplified, with the steps shown.
• Percent Change CalculatorPercentage increase or decrease from an old value to a new one, plus percent difference.
• Percentage CalculatorAnswer the three everyday percentage questions, with the working and a check.
• Ratio CalculatorSimplify a ratio, scale it up or down (A:B = C:?), and see it as 1:n and as percentages.
• Rounding CalculatorRound any number to decimal places, the nearest 10, 100 or 1,000, or significant figures, with five rounding rules.
• Tip CalculatorTip amount and total for any percentage, tipped on the pre-tax amount if you like, split between any number of people.