Discount calculator

See the sale price and how much you save.

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Discount calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Original price

Discount (%)

Answer

…

Sale price = original price × (1 − discount ÷ 100).

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Use the same currency throughout. Tax, delivery and additional discounts are excluded. Automatic precision shows money to two decimal places.

Automatic precision shows money to two decimal places and other numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

Scratch calculator

Check another calculation

Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.

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Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-26

Using Discount calculator

Sale price = original price × (1 − discount ÷ 100).

Use the same currency throughout. Tax, delivery and additional discounts are excluded. Results are shown before currency rounding.

Next: Percent error calculator

A worked example

With original price = 80, discount (%) = 25, the sale price is 60.

Next: Percentage calculator

Next: Calculate VAT

Before you use the result

Use the same currency throughout. Tax, delivery and additional discounts are excluded. Results are shown before currency rounding.

Example results for original price

These examples use Discount (%): 25. They are reference calculations, not recommended settings.

Original price	Sale price
40	30.00
80	60.00
160	120.00

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ToolOctopus. “Discount calculator.” Updated 2026-09-26. https://tooloctopus.com/discount-calculator.

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