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Calculate percentages, discounts and ratios.
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PERCENTAGES01 / 06

Percentage calculator

Find a percentage, a part or the original total.

CALCULATOR Instant results
Try an example

Use a decimal point, for example 12.5. No commas.

YOUR RESULT
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Calculation steps

    CALCULATORS

    Choose a calculator

    6 calculators
    %01

    Percentages

    Find a percentage of a number, express one number as a percentage of another, or recover the whole.

    Percentages calculator
    ↗02

    Increase & decrease

    Apply a known percentage increase or decrease to a starting amount.

    Increase & decrease calculator
    Δ03

    Percentage change

    Measure the signed percentage change from an old value to a new value.

    Percentage change calculator
    ⇄04

    Percentage difference

    Compare two nonnegative measurements using their average as the reference.

    Percentage difference calculator
    −05

    Discounts

    Calculate a sale price, recover the original price, or combine two successive discounts.

    Discounts calculator
    :06

    Ratios & proportions

    Simplify a two-term ratio exactly or find the missing term in a proportion.

    Ratios & proportions calculator
    FORMULAS AND EXAMPLES

    How the calculations work

    Each calculator explains its formula, shows worked examples and lists input limits and special cases.

    Read our calculation method →