Discount calculator
Enter the original price and the discount.
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- You save
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- Total discount
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- You pay
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How to calculate a discount
Multiply the original price by the discount as a decimal to find the saving, then subtract it. 25% off $80 is $80 × 0.25 = $20 off, so you pay $60. Or multiply by what's left: $80 × 0.75 = $60.
Stacked discounts don't simply add up. "30% off, plus an extra 20% off" means 20% off the already-reduced price, which totals 44% off, not 50%. Enter both discounts above to see the real total.
Is it really a bargain?
Compare the final price, not the percentage. A 40% discount on an inflated price can cost more than a 15% discount elsewhere, so check the sale price against other shops before you buy.
Want the full explanation? Read our guide: How to calculate percentages: the three formulas you need.
Questions people ask
How do I calculate 20% off?
Multiply the price by 0.8. A $50 item at 20% off costs $40, a saving of $10.
How do stacked discounts work?
Each discount applies to the price after the previous one. 50% off then an extra 20% off is 60% off in total, not 70%.
How do I work out the percentage off from two prices?
Divide the saving by the original price and multiply by 100. From $120 down to $90 is $30 ÷ $120 = 25% off. The percentage calculator can do this too.
Does the discount apply before or after tax?
Usually before. Shops normally apply the discount to the price and then add sales tax to the reduced amount.