// Math Tool

PERCENTAGE CALCULATOR

Six calculator modes for everyday percentage maths — find a percentage, calculate ratios, percentage change, tip splitting, discounts, and tax/VAT/GST. All live, all in your browser.

% PERCENTAGE OF VALUE

Percentage (%)

Of Value

Enter values above to calculate.

Formula: Result = (% ÷ 100) × Value

Value (X)

Of Total (Y)

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Formula: % = (X ÷ Y) × 100

From (Original)

To (New)

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Formula: % Change = ((New − Original) ÷ Original) × 100

Bill Amount

Tip %

Split by (people)

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Formula: Tip = Bill × (Tip% ÷ 100) · Grand Total = Bill + Tip · Per Person = Grand Total ÷ N

Original Price

Discount %

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Formula: Savings = Price × (Discount% ÷ 100) · Final Price = Price − Savings

Amount

Tax Rate %

Mode:

Enter values above to calculate.

Add Tax: Gross = Amount × (1 + Rate%) · Tax = Gross − Amount