Is my data sent anywhere?

All math runs in your browser. Our servers are not involved at any point.

How is the sale price calculated?

Sale price equals original price multiplied by one minus the discount expressed as a decimal. For a 25 percent discount on $80, that is 80 times 0.75, or $60.

Can the calculator handle decimal percentages?

Yes. Enter values like 12.5 or 7.99 percent and the calculator uses the full precision in the result.

How is the tax-inclusive variant computed?

The sale price is multiplied by one plus the tax rate. Sales tax applies to the discounted price in most jurisdictions, which is the behaviour shown.

What if the discount is over 100 percent?

The calculator floors the sale price at zero so the result remains meaningful even if the discount exceeds the original price.

Percent Off Calculator

Type the original price and the percent-off and the calculator shows the sale price, the amount saved, and an optional tax-inclusive total. Numbers update live as you change either field.

Original priceDiscount (%)Tax rate (% - optional)

Result

Sale price: 80.00
You save: 20.00
Effective discount: 20%

Calculations are estimates for informational purposes only. Consult a financial professional for advice.

All calculations run entirely in your browser.

How it works

The calculator uses plain JavaScript arithmetic. The sale price equals the original price times one minus the discount expressed as a decimal. Stacked and double-discount modes apply each percentage in turn so every subsequent discount lands on the already-reduced amount, which is why the effective percent off is always lower than the sum of the individual rates.

Processing runs in your browser

All calculations happen locally in your browser tab. Our servers are not involved at any point.

Frequently asked questions

Is my data sent anywhere?: All math runs in your browser. Our servers are not involved at any point.
How is the sale price calculated?: Sale price equals original price multiplied by one minus the discount expressed as a decimal. For a 25 percent discount on $80, that is 80 times 0.75, or $60.
Can the calculator handle decimal percentages?: Yes. Enter values like 12.5 or 7.99 percent and the calculator uses the full precision in the result.
How is the tax-inclusive variant computed?: The sale price is multiplied by one plus the tax rate. Sales tax applies to the discounted price in most jurisdictions, which is the behaviour shown.
What if the discount is over 100 percent?: The calculator floors the sale price at zero so the result remains meaningful even if the discount exceeds the original price.

Percent Off Calculator

Result

How it works

Processing runs in your browser

Frequently asked questions

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