Discount Calculator — Sale Price & Savings Calculator
Calculate the sale price after any discount, how much you save, and what percentage discount is being offered. Works for any currency and any discount percentage.
Perfect for shopping, Black Friday deals, business pricing, and comparing discounts across different stores.
Free foreverNo data storedInstant resultsAccurate formula
Calculate discount
Enter the original price and discount to calculate instantly.
Discount breakdown
Sale price
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You save
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Discount %
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Original price
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How to Calculate a Discount
To find the sale price after a percentage discount, multiply the original price by (1 minus the discount rate). To find how much you save, multiply the original price by the discount rate.
Sale price formula: Original × (1 − discount%/100) Example: $120 with 25% off: $120 × 0.75 = $90 Savings: $120 × 0.25 = $30 saved
Stacked discounts
When two discounts are applied sequentially, the total discount is NOT the sum of both. A 20% discount followed by another 10% discount = 28% total, not 30%. Calculate each discount in sequence: apply the first to get an intermediate price, then apply the second to that price.
Comparing discounts across stores
When comparing "30% off $150" vs "flat $40 off $150": 30% off = $45 savings vs $40 flat = 30% off wins. Always compare the actual sale prices, not just the discount percentages or amounts, especially when original prices differ.
Frequently Asked Questions
How do I calculate a percentage discount?
Multiply the original price by the discount percentage divided by 100 to get the saving amount. Subtract from original to get the sale price. Example: 30% off $200: saving = $200 × 0.30 = $60. Sale price = $200 − $60 = $140.
How do I find the original price from a sale price?
Divide the sale price by (1 − discount rate). Example: item is $75 after 25% off: original = $75 ÷ 0.75 = $100. This calculator does this automatically with the 'Find original price' mode.
What is double discount?
A double discount applies two discounts sequentially. 20% off then 10% off does NOT equal 30% off. First discount: $100 × 0.80 = $80. Second discount: $80 × 0.90 = $72. Total saving: $28 (28%), not $30 (30%).
How do stores calculate clearance discounts?
Clearance prices often reflect multiple markdowns applied over time. 'Originally $100, now $60' means a 40% total discount. 'Was $100, then $80, now $60' means two separate 20% markdowns, which equals a 36% total discount from the original.