📐 Math
Percent Off Calculator
Enter the original price and discount percentage to see the final price and your total savings.
📝 Your Assumptions
Calculate the final price and total savings from any percentage discount. Enter the original price and the discount percentage to see exactly what you will pay and how much you are saving. Works for sales, coupons, promotional codes, and clearance events.
How to Use This Calculator
Two inputs give you the exact sale price and savings.
1
Enter the original price
Type the full price of the item before any discount. If the tag says $150, enter 150.
2
Enter the discount percentage
Type the discount being offered without the % sign. If the sign says "30% off," enter 30.
3
Read the final price
The primary output shows what you will pay: for a $150 item at 30% off, the final price is $105.
4
Check your savings
The second output shows the dollar amount saved: $45 in the example above.
5
Compare multiple discounts
Change the discount percentage to see how different coupons compare. A $150 item at 20% is $120; at 30% it is $105 — a $15 difference.
What Your Results Mean
Understanding both outputs helps you compare deals and shop smart.
Final Price
The amount you actually pay at checkout, before tax and shipping. This is the number that matters for your budget.
You Save
The dollar amount of the discount. Useful for comparing deals across different price points — 30% off a $50 item saves less than 20% off a $200 item.
Percentage Off
The rate of discount. A 30% discount means you pay 70% of the original price. This is the standard way stores advertise sales.
Stacking Discounts
Two sequential discounts do not add up. 20% off then an additional 10% off equals 28% total, not 30%. Apply them one at a time.
Tax is Applied After
Sales tax is typically calculated on the final price, not the original. Our calculator shows the pre-tax price.
Common Uses
Shopping, comparing sales, calculating coupons, restaurant discounts, closeout events, and clearance price checks.
Key Terms
Percent Off
A discount expressed as a percentage of the original price. "30% off" means you pay 70% of the original.
Original Price
The full retail price before any discount. Also called the list price or MSRP.
Final Price
The price after the discount is applied. This is what you pay before tax and shipping.
Discount Amount
The dollar value of the savings. Calculated as original price × discount % ÷ 100.
Stacked Discounts
Two or more discounts applied sequentially. They multiply rather than add — 20% + 10% = 28% total, not 30%.
❓ Frequently Asked Questions
Multiply the original price by (1 − discount/100). For example, for a $150 item at 30% off: 150 × (1 − 0.30) = 150 × 0.70 = $105. Alternatively, calculate the discount amount first (150 × 0.30 = $45) and subtract it (150 − 45 = $105). Both methods give the same result. This calculator uses the first method automatically.
No — they compound. A 20% discount followed by an additional 10% off does not equal 30%. Instead: 20% off brings a $100 item to $80, then 10% off $80 brings it to $72 — a total discount of 28%. Stacked percentages always produce a smaller total than the sum suggests. This is because the second discount applies to the already-reduced price, not the original. Our calculator shows one discount at a time — for stacked discounts, apply them sequentially.
Divide the final price by (1 − discount/100). For example, if a final price is $85 after a 15% discount: 85 ÷ 0.85 = $100. This reverse calculation is useful when you know the sale price and the discount percentage but not the original price. Be careful not to just add the discount — you must divide. This is the most common math mistake when reverse-engineering discounts.
Not necessarily. The total savings depends on both the discount percentage AND the original price. A 50% off item originally priced at $20 saves $10. A 20% off item originally priced at $200 saves $40. The second deal saves more in absolute dollars, even though the percentage is lower. Our calculator shows both the final price and the savings amount so you can compare accurately. Always compare the "you save" figure across different products.
Calculate the final price first, then apply the tip or tax on that final price. For example, a $100 item at 25% off is $75. An 8% sales tax on $75 is $6, making the total $81. If you tipped on a $75 discounted meal at 20%, the tip would be $15. Most POS systems apply tax to the discounted amount, but check your local tax rules — some regions tax the pre-discount price for certain items.
"Percent off" is a discount applied by subtraction — 30% off $100 means you pay $70. "Percent of" is a portion — 30% of $100 is $30. If a store says "30% off," you pay 70% of the price. If a store says "pay 30% of the price," you pay $30. The words matter. Sales advertisements almost always use "percent off" because it sounds like a bigger deal — "30% off" sounds better than "70% of." Our calculator handles the "percent off" format used in most retail settings.
Related Calculators
Explore other calculators that pair well with this one.