Percentage Off Calculator | Sale Price & Savings
Type in any original price and discount percentage to instantly see the exact amount you save and the final price you pay after the markdown.
Common discounts:
You Save
Final Price
You Pay
Calculation Breakdown
Savings Visualized
Quick Reference: Common Discount Amounts
Use this table to see what you'd save and pay per 100 at each discount level. Scale up or down for your actual price.
| Discount | You Save (per 100) | You Pay (per 100) |
|---|
How to Calculate Percentage Off Any Price
The math behind a percentage discount is two steps:
Step 1: Discount Amount = Original Price × (Percentage Off ÷ 100)
Step 2: Final Price = Original Price − Discount Amount
For the core query example — what is 30% off $85? — it works out as: $85 × 0.30 = $25.50 savings, leaving a final price of $59.50.
A shortcut: multiply the original price by (1 − discount rate). So 30% off means you multiply by 0.70. On $85, that's $85 × 0.70 = $59.50 — same result, one step.
Why Stacked Discounts Don't Simply Add Up
When a store runs "20% off, plus an extra 15% at checkout," most people expect 35% off. The actual discount is smaller. The second percentage applies to the already-reduced price, not the original.
Example on a $200 item: 20% off brings it to $160. Then 15% off $160 takes off $24, giving you $136. That's a total saving of $64, or 32% — not 35%.
The general formula for stacked discounts: multiply the "pay" rates together. Here, 0.80 × 0.85 = 0.68, so you pay 68% of the original price (a 32% effective discount).
Comparing "$X Off" vs. "Y% Off" Deals
A fixed "$20 off" coupon and a "25% off" deal are only equal at one price point — in this case, $80. Below $80, the flat $20 off saves more. Above $80, the 25% discount wins.
Quick check: divide the fixed dollar amount by the percentage (as a decimal). $20 ÷ 0.25 = $80. That's your breakeven price. If the item costs more, go with the percentage deal.
Frequently Asked Questions
How do I calculate 30% off a price?
Multiply the price by 0.30 to get the discount amount, then subtract it from the original price. For example, 30% off $85: $85 × 0.30 = $25.50 discount, so you pay $85 − $25.50 = $59.50.
Is "percent off" the same as a discount?
Yes. "25% off" and "a 25% discount" mean exactly the same thing — the price is reduced by one quarter of its original value.
What does "up to 50% off" mean?
It means the largest discount available in the sale is 50%, but not every item qualifies. Most items will carry a smaller discount. Always check the tag on the specific product you're interested in.
Does sales tax apply before or after the discount?
In most jurisdictions, sales tax is calculated on the discounted price — the amount you actually pay — not the original sticker price. This means the tax amount is also lower when you use a discount.
How do I find the original price from a sale price?
Divide the sale price by (1 minus the discount rate). If you paid $60 after a 25% discount: $60 ÷ 0.75 = $80 original price.
Is 50% off the same as half price?
Yes. A 50% discount means you pay exactly half the original price.