Percent Off Calculator
Calculate the final price after any percentage discount and see exactly how much you save.
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Calculate the final price after any percentage discount, including quantity and sales tax, and instantly compare the price at other common discount levels.
How Percent Off Calculator Works
The discount amount is simply Original Price × Percent Off ÷ 100, and the price after discount is the original price minus that amount. If you're buying more than one unit, the discounted per-unit price is multiplied by the quantity to get your total.
Sales tax, if entered, is applied to the discounted price (not the original price) — matching how discounts and tax are typically calculated together at checkout, where the tax is charged on what you actually pay, not the pre-discount sticker price.
The comparison table recalculates the same original price across a full range of common discount percentages (5% through 90%) at once, making it easy to see exactly how much a deeper markdown would save without re-entering the price each time.
See It In Action
Who Uses Percent Off Calculator and Why
- Working out the exact final price on a discounted item before checkout, including sales tax applied on top of the sale price.
- Comparing the total cost of buying multiple units of a discounted item, like a multi-pack sale.
- Using the comparison table to see at a glance how much more you'd save if a store offered a deeper discount (say 30% instead of 20%).
- Working backward from an advertised sale to sanity-check that a listed discounted price matches the advertised percentage off.
Mistakes to Avoid
- Applying sales tax to the original price instead of the discounted price — this calculator (matching typical checkout behavior) applies tax to the post-discount amount, so manually calculating tax on the sticker price first will overstate the total.
- Forgetting that quantity multiplies the already-discounted per-unit price, not the original price — the discount percentage itself doesn't change based on how many units are purchased.
- Assuming a percentage-off discount is always the better deal without comparing it to a flat dollar-off coupon on the same item — the comparison table's range of common discount percentages can help sanity-check which one is actually larger in dollar terms.
Tips for Best Results
- Use the comparison table before settling on a purchase decision to see, at your item's actual price, exactly how much more you'd save at a slightly deeper discount tier.
- If a coupon offers a flat dollar amount instead of a percentage, convert it to an equivalent percent-off figure by dividing the dollar amount by the price, so you can compare it directly using this calculator.
Fixing Common Problems
My calculated final price doesn't match what the register charged. — Check whether the store applied tax before or after the discount, and whether any additional store-specific discounts or loyalty pricing were stacked on top — this calculator assumes tax is applied to the discounted price, which is standard but not universal.
The savings amount seems too small for a 'big' percentage discount. — Percentage discounts on lower-priced items naturally produce smaller dollar savings than the same percentage on a higher-priced item — the percentage is consistent, but the dollar amount it represents scales with the original price.
Terms Explained
Discount amount: The dollar amount subtracted from the original price, calculated as original price multiplied by the percent off, divided by 100.
Comparison table: A table recalculating the same original price across a range of common discount percentages, to make it easy to compare savings at different markdown levels at once.