Calculator directory

All Percentage Calculators

Choose the calculation that matches your question. Every tool includes the formula, a worked example, and focused guidance for checking the result.

Core percentages

Find any percentage of a number and see the formula beside the result.

Allocate a percentage of a total and track the remaining amount or overage.

Find what percentage one number represents of another number.

Convert points earned into a percentage score and letter-grade estimate.

Compare an original value with a new value and measure the change.

Add a percentage to a starting value and see the amount added.

Apply the same percentage repeatedly and calculate cumulative growth or decline.

Subtract a percentage from a starting value and see the reduction.

Compare two values without treating either one as the baseline.

Compare an observed value with an accepted value and measure the error.

Recover the original amount before an increase or decrease.

Calculate the savings and final price after a percentage discount.

Work out the tip, total bill, and cost per person.

Calculate tax amount and the total including tax.

Calculate a raise amount and the new salary after a percentage increase.

Calculate commission earned and total compensation with optional base pay.

Measure profit or loss as a percentage of cost from known prices.

Calculate markup amount and selling price from cost.

Calculate gross margin percentage and profit from cost and price.