How do you calculate percentage increase?

Subtract the starting value from the final value, divide by the absolute starting value, and multiply by 100 ((Final - Initial) / Initial * 100).

Can I calculate sales discounts and VAT?

Yes, use the Discount mode to calculate retail discounts, sales tax additions, and total money saved.

Are my numbers sent to any server?

No. All calculations run strictly in your local browser JavaScript engine.

Everyday Tools

Percentage Calculator & Discount Tool

Free in-browser Percentage Calculator Suite. Easily solve all common percentage equations: calculate the percentage of a value, determine what percent one number is of another, compute percentage increases and decreases between two values, and calculate discounted retail prices and total savings with live reactive results.

100% In-Browser Privacy

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How to Calculate Percentages in 3 Steps

Choose Calculation Mode

Select from percentage of a number, percentage ratio, increase/decrease, or discount.

Enter Values

Type your initial and target numbers into the input boxes.

Instant Live Result

View the calculated result, visual percentage difference, and copy with 1-click.

Frequently Asked Questions

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