How do I calculate a discount percentage?

Divide the savings amount by the original price, then multiply by 100. For example, saving $20 on a $100 item is a 20% discount.

How is the sale price calculated?

Sale price = Original price × (1 − Discount% ÷ 100). For example, $80 is the sale price of a $100 item at 20% off.

Is 20% off plus 10% off the same as 30% off?

No. Stacked discounts apply successively. 20% off $100 gives $80, then 10% off $80 gives $72 — which is a 28% total discount, not 30%.

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

Divide the sale price by (1 − Discount% ÷ 100). For example, if the sale price is $80 after 20% off, the original price is $80 ÷ 0.80 = $100.

Does this calculator include sales tax?

No. This calculator focuses on the discount itself. For tax-aware pricing, use the Tax and Tip Calculator in the related tools section.

Can I use this for BOGO deals?

A buy-one-get-one-free deal is effectively a 50% discount on two items at the same price. Enter the combined price and 50% to see the result.

How do I calculate 15% off a price quickly?

Find 10% by moving the decimal one place left, then add half of that for the extra 5%. For $60: 10% is $6, 5% is $3, so 15% off saves $9 and the sale price is $51.

Discount Calculator

Enter the original price and a discount percentage to instantly see the sale price and how much you save. Use this page when the main task is straightforward sale-price math for shopping, coupons, or clearance sales.

Enter price and discount

The calculator updates instantly as you adjust the original price and discount percentage. Try different scenarios without reloading.

Original price

Enter the full price before any discount is applied.

Discount percentage

Enter the discount as a percentage off the original price (0–100).

The calculation runs entirely in your browser. If you copy the link, the current values are included in the URL.

Results update instantly as inputs change, making it easy to compare different discount scenarios.

Discount result

Review the sale price, savings amount, and effective discount below.

Enter a price and discount to begin

Once you provide valid values, the page will show the sale price and how much you save.

How this discount calculator works

Enter the original price and the discount percentage to instantly see the sale price and your total savings. The formula is simple: sale price equals original price times (1 minus discount divided by 100).

1. Enter the original price

Start with the full retail or list price before any discount, coupon, or promotion is applied.

2. Enter the discount percentage

Type the percentage off, such as 10%, 20%, or 50%. You can also use the preset buttons for common discounts.

3. Read the sale price and savings

The page instantly shows the final price you pay, the dollar amount you save, and the effective discount percentage.

When discount math matters

A discount percentage sounds appealing in marketing, but the actual sale price and dollar savings are what determine whether a deal is worth it.

Stacked discounts (for example, 20% off plus an extra 10% coupon) do not add up to 30% off. The second discount applies to the already-reduced price, resulting in a 28% total discount.

This tool handles percentage-based discounts. For tax-inclusive pricing or tip calculations, use the related tools below.

Retailers sometimes round the final price up or down, so the actual register total may differ by a few cents from the calculated result.

Discount calculator FAQ

How do I calculate a discount percentage?: Divide the savings amount by the original price, then multiply by 100. For example, saving $20 on a $100 item is a 20% discount.
How is the sale price calculated?: Sale price = Original price × (1 − Discount% ÷ 100). For example, $80 is the sale price of a $100 item at 20% off.
Is 20% off plus 10% off the same as 30% off?: No. Stacked discounts apply successively. 20% off $100 gives $80, then 10% off $80 gives $72 — which is a 28% total discount, not 30%.
How do I find the original price from a sale price?: Divide the sale price by (1 − Discount% ÷ 100). For example, if the sale price is $80 after 20% off, the original price is $80 ÷ 0.80 = $100.
Does this calculator include sales tax?: No. This calculator focuses on the discount itself. For tax-aware pricing, use the Tax and Tip Calculator in the related tools section.
Can I use this for BOGO deals?: A buy-one-get-one-free deal is effectively a 50% discount on two items at the same price. Enter the combined price and 50% to see the result.
How do I calculate 15% off a price quickly?: Find 10% by moving the decimal one place left, then add half of that for the extra 5%. For $60: 10% is $6, 5% is $3, so 15% off saves $9 and the sale price is $51.

Related pricing and percentage tools

Use the discount calculator when the main task is sale-price math. Move to the percentage calculator for broader percent questions, or to the payment tools when the context shifts to restaurant bills and totals.

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Percentage Calculator

Switch to general percentage math when the question goes beyond sale pricing into percent-of, what-percent, or percentage change.

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Tip Calculator

Use for restaurant tip math when the question is no longer sale pricing but bill totals and tip amounts.

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Tax and Tip Calculator

Use when you need to factor in sales tax alongside tip for a complete payment breakdown.

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Split Bill Calculator

Use when the real task is dividing a final total fairly among multiple people.

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