How do I calculate a discount?

Multiply the original price by (1 − discount% ÷ 100). For $100 at 20% off: $100 × 0.80 = $80. This discount calculator shows both the final price and the amount saved.

Can I use any currency?

Yes. The tool only uses numbers, so enter amounts in your currency. Results stay in the same units without adding a symbol.

How do I calculate a discount with tax?

First get the discounted price, then multiply by (1 + tax rate). Example: $80 after 20% off × 1.08 for 8% tax = $86.40. This tool shows the pre-tax discounted price.

Can I calculate what percentage off something is?

Yes — use the Percentage Calculator. Enter the original price as the total and the savings as the part to find the discount percent.

What if the discount is more than 100%?

Discounts above 100% are not valid retail scenarios. The calculator floors the final price at zero.

Calculator Tools

Popular

Discount Calculator

Enter a price and discount percent to see savings and the final sale price.

Original price

Discount (%)

Final price

$80

You save

$20

About Discount Calculator

Enter an original price and a discount percent to see the amount saved and the final sale price. Built for retail markdowns, percent-off coupons, and quick shopping math — all in your browser.

How to Use Discount Calculator

Enter the original price.
Enter the discount percent.
Read the final sale price and savings instantly.
Use the result for retail sales, coupons, or price planning.

Discount Calculator Formula

Final price = original price × (1 − discount% ÷ 100). Savings = original price − final price. Example: $100 at 20% off → $100 × 0.80 = $80 final, $20 saved. To reverse a percent from two prices, use the Percentage Calculator.

Discount Calculator Examples

$100 at 20% off

Discount amount $20. Final price $80.

$49.99 at 15% off

Savings about $7.50. Final price about $42.49.

Stack two discounts

Apply sequentially: $100 → 20% off = $80, then 10% off $80 = $72.

Common Use Cases

Retail sale pricing and window signs
Checking a coupon or promo code percent-off
Comparing two discount offers on the same item
Quick pre-tax sale math before checkout

Read the full guide

How to Use Discount Calculator: Complete Guide (2026) - 5 min read

Frequently Asked Questions about Discount Calculator

How do I calculate a discount?: Multiply the original price by (1 − discount% ÷ 100). For $100 at 20% off: $100 × 0.80 = $80. This discount calculator shows both the final price and the amount saved.
Can I use any currency?: Yes. The tool only uses numbers, so enter amounts in your currency. Results stay in the same units without adding a symbol.
How do I calculate a discount with tax?: First get the discounted price, then multiply by (1 + tax rate). Example: $80 after 20% off × 1.08 for 8% tax = $86.40. This tool shows the pre-tax discounted price.
Can I calculate what percentage off something is?: Yes — use the Percentage Calculator. Enter the original price as the total and the savings as the part to find the discount percent.
What if the discount is more than 100%?: Discounts above 100% are not valid retail scenarios. The calculator floors the final price at zero.

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