Discount Calculator
Calculate the sale price after a discount. Enter an original price and a percent off to instantly see the final price, how much you save, and the percentage of the price you still pay.
ToolsSoup's Discount Calculator works out the sale price in a heartbeat. Enter the original price and the discount percentage and you instantly get the final price you'll pay, the exact amount of money you save, and what percentage of the original price you still hand over. It's the fastest way to answer questions like "what is 25% off $80?" or "how much do I save with a 30% discount?" — perfect for checking sale tags, clearance markdowns, coupon codes, and "X% off" deals before you reach the register. Everything runs in your browser: no uploads, no sign-up, and your numbers never leave your device.
What is a discount calculator?
A discount calculator takes an original price and a discount percentage and tells you the discounted (sale) price, along with how much you save. Instead of doing the percentage math in your head at the checkout, you type the price and the percent off and read the final price right away. It's built for everyday shopping situations — sales, coupons, promo codes, and clearance markdowns — and shows both the money you keep and the share of the price you still pay.
How to calculate a discount
Finding a sale price takes three quick steps, and this tool does them automatically as you type:
- Enter the original price in the first field — the full, pre-discount amount.
- Enter the discount as a percentage in the second field — for example 25 for 25% off.
- Read the final price. The discounted price appears at the top, with the amount you save and the percentage of the original price you still pay underneath.
What is the discount formula?
The discount formula is: final price = original price × (1 − discount ÷ 100). First turn the percentage into a decimal by dividing by 100, then multiply the original price by one minus that decimal. The money you save is original price × (discount ÷ 100). For example, 25% off $80 is $80 × (1 − 0.25) = $80 × 0.75 = $60, and you save $80 × 0.25 = $20. This calculator runs that formula for you instantly as you change either number.
What is 25% off?
A 25% discount means you pay 75% of the original price and save 25% of it. On an $80 item, 25% off is a $20 saving, leaving a final price of $60. The same logic applies to any percent off: a 30% discount means you pay 70% of the price, a 50% discount halves the price, and a 100% discount makes the item free. Enter your own numbers above to see the exact saving for any deal.
Stacking and double discounts
When a store applies one discount on top of another, the percentages don't simply add up — each is taken off the running total. An extra 20% off an already 50%-off item is not 70% off: the first cut takes a $100 item to $50, then 20% off $50 is another $10, for a final price of $40, which is 60% off in total. To handle a double discount with this tool, calculate the first sale price, then enter that result as the original price and apply the second percentage.
Why use this discount calculator?
- Instantly shows the final sale price after any percent-off discount.
- Tells you the exact amount of money you save, not just the percentage.
- Shows what percentage of the original price you still pay, so you can compare deals at a glance.
- Handles any discount from 0% to 100% and warns you if the percentage is out of range.
- Updates live as you type, runs entirely in your browser, and is 100% free with no ads or sign-up.
Frequently asked questions
How do I calculate a discount?
Multiply the original price by the discount percentage divided by 100 to get the amount you save, then subtract that from the original price to get the final price. For example, 20% off $50 is $50 × 0.20 = $10 saved, leaving $40. Enter the price and percent above and the calculator does it instantly.
What is 25% off $80?
25% off $80 is a $20 discount, leaving a final price of $60. You pay 75% of the original price and save 25% of it.
How much do I save with a 30% discount?
You save 30% of the original price. On a $100 item that's $30 off, leaving a final price of $70. Enter your own price above to see the exact saving.
How do I stack two discounts?
Apply them one after the other rather than adding the percentages. Calculate the price after the first discount, then enter that result as the original price and apply the second percentage. Two 50% discounts give 75% off in total, not 100% off.
Does the calculator include sales tax?
No, it shows the pre-tax discounted price. Tax is usually added to the final sale price afterward, so calculate the discount first, then add any applicable sales tax or VAT to the result.