How do I calculate a discounted price?

Multiply the original price by (1 − discount% ÷ 100). Example: $120 item with 25% off: $120 × (1 − 0.25) = $120 × 0.75 = $90. Your savings = $120 − $90 = $30.

How much do I save with a 30% discount on a $200 item?

30% of $200 = $60 savings. Final price = $200 − $60 = $140. To verify: $140 ÷ $200 = 0.70, meaning you pay 70% of the original price.

How do I find the original price before a discount?

Divide the sale price by (1 − discount% ÷ 100). Example: item is $75 after 40% off: original price = $75 ÷ (1 − 0.40) = $75 ÷ 0.60 = $125.

Shopping · Free Tool

Discount Calculator
Final Price After % Off

Our free discount calculator instantly shows your final price, total savings, and what percentage of the original price you're paying — great for sales, coupons, and online shopping.

Last updated: May 10, 2026

% Off

100% Free & Private

Discount Calculator

Instant Savings & Final Price

Final Price —

You Save —

You Pay —

Live Calculation

Savings Summary

Enter a price and discount to see your savings instantly.

Price Breakdown

Final Price (—)

You Save (—)

Discount Formulas Explained

Two simple formulas behind every discount calculation:

1 Savings Amount

Savings = Original Price ×

Discount %

100

Example $149.99 × 30% = $149.99 × 0.30 = $45.00 saved

2 Final Price

Final Price = Original Price − Savings

Example $149.99 − $45.00 = $104.99 final price

Common Discount Examples

$50 item, 10% off → Save $5.00 → Pay $45.00
$100 item, 25% off → Save $25.00 → Pay $75.00
$200 item, 40% off → Save $80.00 → Pay $120.00
$499 item, 15% off → Save $74.85 → Pay $424.15
$1,200 item, 33% off → Save $396.00 → Pay $804.00

Stacked Discounts

If a store applies two discounts in sequence (e.g., 20% off, then an additional 10% off), they do not add up to 30%. Calculate them sequentially:

! Stacked Discount Example

$100 → 20% off → $80 → 10% off → $72

Note Total effective discount is 28%, not 30%. Use the calculator twice in sequence.

Working Backwards: Find the Original Price

If you know the sale price and the discount percentage but want to find the original price, use the reverse formula:

↩ Reverse Discount Formula

Original Price =

Sale Price

1 − (Discount% ÷ 100)

Example You paid $63 after a 30% discount → $63 ÷ 0.70 = $90 original price

BOGO and Black Friday: The Math You Need

BOGO (Buy One Get One Free) is not the same as 50% off everything. The discount only applies when you buy at least two items. If you only need one item, the effective discount is 0%. If you buy two, the effective discount is 50% per item. Buying three at BOGO: you pay for 2, get 1 free — effective discount is 33.3% per item.

Black Friday stacked promotions (e.g., 40% off + extra 20% off) work sequentially, not additively. A $200 item with 40% off = $120. Then 20% off $120 = $96. The effective total discount is 52%, not 60%. Always apply the calculator twice when stacking.

Related Tools

Percentage Calculator — Find what percentage you're saving or what a discount equals.
Tip Calculator — Calculate tip on the final post-discount price.
Salary Converter — See how much of your hourly wage an item really costs.
Unit Converter — Great for international shopping where unit differences matter.

Frequently Asked Questions

How do I calculate a discount percentage?

Formula: Discount % = ((Original Price − Sale Price) ÷ Original Price) × 100. Example: item was $80, now $60 → ((80−60) ÷ 80) × 100 = 25% discount. Use our Percentage Calculator for this reverse calculation.

What is 20% off $75?

20% of $75 = $15 savings. Final price = $75 − $15 = $60. Quick mental trick: 20% off means you pay 80% of the original price. $75 × 0.80 = $60.

How do I find the original price from a discounted price?

Formula: Original Price = Sale Price ÷ (1 − Discount%). Example: You paid $70 after a 30% discount → Original = $70 ÷ 0.70 = $100. This is also called a "reverse discount" or "back-calculation."

Does the discount apply before or after tax?

In most US retail situations, discounts are applied to the pre-tax price. Sales tax is then calculated on the discounted price. Example: $100 item, 20% off = $80, then 8% tax = $86.40 final total. This calculator shows the pre-tax discounted price only.

Do stacked discounts add up?

No. Two sequential discounts of 20% and 10% give a combined discount of only 28%, not 30%. To calculate: apply the first discount to get an interim price, then apply the second discount to that interim price. The calculator above can be used twice in sequence for this.

⚠️ Disclaimer: For informational purposes only. Tax not included. See our full Disclaimer.

Discount Calculator Final Price After % Off