Discount Calculator

Sale price and amount saved from a price and % off — or the % between two prices.

Stays on your device. This tool runs in your browser — nothing you paste or open ever leaves it. Nothing uploaded, nothing to leak.

Mode

Original price

Discount

% off

Original price

Sale price

You save

off

You save

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How to use it

In “percent off” mode, enter the price and the discount to get the sale price and savings. In “find the discount” mode, enter the original and sale prices to get the percentage off.

Discount Calculator — TechWhack Score

9.5/10

Privacy 10/10

Prices are worked out in the browser — nothing is sent anywhere.
Speed 10/10

The sale price and savings appear the moment you type.
Features 8/10

Two modes — take a percentage off a price, or find the percentage discount between an original and a sale price — and it shows both the price to pay and the amount saved.
Free 10/10

No sign-up, no limits.

Verdict: The reverse mode — finding the real percentage behind a “was/now” price — is the bit most sticker-price calculators skip.

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A discount calculator works out the sale price and the amount you save from an original price and a percentage off. Enter $100 at 25% off and it shows $75 to pay and $25 saved. You can also work backwards to find the percentage discount between an original price and a lower one.

The formulas

Sale price = price × (1 − discount ÷ 100). Amount saved = price × discount ÷ 100. Percentage off = (price − sale) ÷ price × 100. A $80 item at 30% off is $56, saving $24.

When you need it

Checking a sale sticker, stacking a coupon, comparing two offers, or working out the real percentage behind a “was/now” price.

FAQ

How do I calculate a discount?Multiply the price by the discount percentage and divide by 100 to get the amount saved, then subtract it from the price for the sale price. $50 at 20% off saves $10, so you pay $40.

What is the sale price after a percentage off?Sale price = original price × (1 − discount ÷ 100). A $120 item at 15% off is $102.

How do I find the percentage discount between two prices?Subtract the sale price from the original, divide by the original, and multiply by 100. From $60 to $45 is a 25% discount.

Is anything I type stored?No — every calculation runs in your browser and nothing is uploaded.