Arithmetic Calculators
Everyday arithmetic with the working shown: percentages and percentage change, ratios and proportions, fractions and decimals, averages, absolute values and remainders.
Percentage Calculator
X% of Y, X as a % of Y, and percentage increase or decrease.
Percentage Change Calculator
Percentage increase or decrease between two values.
Ratio Calculator
Simplify ratios and share an amount.
Proportion Calculator
Solve A:B = C:D for the missing value.
Fraction Calculator
Fraction arithmetic with simplified answers.
Decimal to Fraction Calculator
Decimal to an exact fraction.
Fraction to Decimal Calculator
Fraction to decimal, with repeating digits.
Absolute Value Calculator
Absolute value and distance between numbers.
Modulo Calculator
a mod n and the remainder.
Average Calculator
Mean, median, mode and range of a list.
Weighted Average Calculator
Weighted average of values.