Discount calculator

What is the Discount Calculator?

The Discount Calculator works out how much you save and what you'll actually pay when a price is reduced by a percentage — useful for sale shopping, comparing deals, checking a store's advertised discount, or working out sales tax on top of a purchase. Results appear instantly as you type, with no sign-up required.

How to use it

1. Enter the original (pre-discount) price.
2. Enter the discount percentage being offered.
3. The calculator instantly shows both the amount you save and the final price you'd pay.

How the math works

The amount saved is the original price multiplied by the discount percentage (as a decimal). The final price is simply the original price minus that saved amount.

Formula: savings = original price × (discount % ÷ 100). Final price = original price − savings.

For example, a 20% discount on $1,000 saves $200 (1,000 × 0.20), bringing the final price to $800.

Worked examples

Example 1 — Simple discount

A $45 shirt is 30% off: savings = 45 × 0.30 = $13.50, so the final price is $31.50.

Example 2 — Large purchase

A $2,400 laptop is 15% off: savings = 2,400 × 0.15 = $360, so the final price is $2,040.

A note on stacked discounts

If a store offers two discounts stacked together (e.g., "20% off, then an extra 10% off"), the second discount applies to the already-reduced price, not the original — so two 10% discounts don't add up to a flat 20% off; they actually add up to a 19% total discount. Run this calculator twice, using the first result as the "original price" for the second discount, to get an accurate combined total.

Common uses

• Checking whether a "sale price" advertised in-store matches the claimed discount
• Comparing two different discount offers to see which saves more
• Budgeting for a purchase before checkout
• Working out bulk or wholesale pricing after a percentage reduction
• Verifying receipts and invoices for accuracy
• Planning seasonal sale pricing if you run a small business

Frequently asked questions

Does this calculator include sales tax?

No — this tool calculates the discount only. If you need to add tax on top of a discounted price, calculate the discount first, then apply your local tax rate to the resulting final price.

Can I use this for a price increase instead of a discount?

This calculator is built specifically for discounts (price reductions). For markups or percentage increases, the Percentage Calculator's "percentage increase" tool handles that calculation.

What if the discount percentage is more than 100%?

A discount over 100% isn't meaningful for a normal sale price and would produce a negative final price — double-check the percentage you've entered if you see an unexpected result.