Discount Calculator

Discount Calculator – Find Sale Price, Savings & Percent Off

Use our Discount Calculator to quickly find the price you pay after a discount, how much money you save, the percentage discount between two prices, or the original price before a sale.

Enter the original price and select a common discount such as 10%, 20%, 25%, 30%, or 50%, or type any custom percentage. The calculator updates instantly and shows the sale price, amount saved, discount percentage, and percentage of the original price you still pay.

You can also switch between Sale Price, Find Discount %, and Find Original Price depending on the information you already have.

What Is a Discount Calculator?

A discount calculator helps you determine how much an item costs after a percentage reduction.

For example, suppose an item originally costs:

$100

and the store offers:

20% off

The discount amount is:

$20

and the final sale price is:

$80

Instead of calculating the percentage manually, the calculator performs the calculation instantly.

It can also solve the calculation in reverse. If you know the original and sale prices, it can determine the percentage off. If you know the sale price and discount rate, it can estimate the original price.

How to Use the Discount Calculator

Start by choosing the calculation that matches your situation.

Sale Price

Use this option when you know the original price and discount percentage.

Enter:

Original Price

and:

Discount %

The calculator shows:

Price You Pay

Amount Saved

and:

Percentage of Original Price Paid

For example:

Original price:

$150

Discount:

30%

You save:

$45

Price you pay:

$105

Find Discount %

Use this mode when you know both the original price and the sale price but want to determine the actual percentage discount.

For example:

Original price:

$120

Sale price:

$90

Difference:

$30

Discount:

25%

This can be useful when a store displays a previous price and a current price but does not clearly show the percentage saved.

Find Original Price

Use this option when you know how much you paid and the advertised discount percentage.

For example:

Sale price:

$80

Discount:

20%

Original price:

$100

This reverse discount calculation is useful when you want to determine what an item cost before the discount was applied.

Discount Formula

The basic formula for calculating a discount amount is:

Discount Amount = Original Price × Discount Percentage ÷ 100

The sale price is:

Sale Price = Original Price − Discount Amount

For example:

Original price:

$200

Discount:

25%

First calculate the discount:

$200 × 25 ÷ 100 = $50

Then subtract it from the original price:

$200 − $50 = $150

So the final price is:

$150

and you save:

$50

How to Calculate Percentage Off

If you know the original price and sale price, use:

Discount % = (Original Price − Sale Price) ÷ Original Price × 100

Example:

Original price:

$250

Sale price:

$200

Difference:

$50

Now calculate:

$50 ÷ $250 × 100 = 20%

The item is:

20% off

How to Find the Original Price Before a Discount

If you know the sale price and discount percentage, use:

Original Price = Sale Price ÷ (1 − Discount Percentage ÷ 100)

For example:

Sale price:

$75

Discount:

25%

Calculation:

$75 ÷ (1 − 0.25)

$75 ÷ 0.75 = $100

The original price was:

$100

Common Discount Examples

The table below shows how common discount percentages affect a $100 original price.

Your calculator generates the same type of comparison dynamically using the price you enter.

How Much Is 10% Off?

To calculate a 10% discount, multiply the original price by:

0.10

For a:

$80

item:

$80 × 0.10 = $8

You save:

$8

Price after discount:

$72

How Much Is 20% Off?

A 20% discount means you save one-fifth of the original price.

For a:

$150

item:

$150 × 0.20 = $30

Sale price:

$150 − $30 = $120

So:

You save $30

and:

You pay $120

How Much Is 25% Off?

A 25% discount is equal to one-quarter of the original price.

For example:

Original price:

$200

Discount:

25%

Savings:

$50

Final price:

$150

How Much Is 30% Off?

For a:

$90

item:

$90 × 0.30 = $27

You save:

$27

and pay:

$63

How Much Is 50% Off?

A 50% discount means the price is reduced by half.

For example:

Original price:

$120

Discount:

50%

Savings:

$60

Sale price:

$60

This is why a 50% discount means you pay exactly 50% of the original price.

Price You Pay vs. Amount Saved

These two values are different.

Suppose:

Original price:

$100

Discount:

30%

You save:

$30

but the amount you pay is:

$70

The relationship is:

Original Price = Amount Saved + Sale Price

In this example:

$100 = $30 + $70

The calculator displays both values so you can immediately understand the actual deal.

What Percentage of the Original Price Do You Pay?

If an item is discounted by:

20%

you pay:

80%

of its original price.

If the discount is:

30%

you pay:

70%

If the discount is:

50%

you pay:

50%

The calculator's price and savings breakdown makes this relationship easy to see.

Discount Percentage Calculator

The Find Discount % mode works as a discount percentage calculator.

For example:

Original price:

$160

Sale price:

$120

Savings:

$40

Formula:

$40 ÷ $160 × 100

= 25%

So the item is:

25% off

This feature is particularly useful when comparing sale labels from different stores.

Sale Price Calculator

A sale price calculator determines the final amount you pay after a discount.

For example:

Original price:

$249.99

Discount:

30%

Discount amount:

$75.00 approximately

Sale price:

$174.99 approximately

The calculator handles decimal prices automatically, so you do not need to round the intermediate calculation yourself.

Percent Off Calculator

A percent off calculator is useful when you are shopping during sales such as:

Black Friday promotions, clearance events, seasonal sales, online coupon events, clothing sales, electronics promotions, and storewide discounts.

You can enter the displayed price and percentage to see the actual amount you will pay before purchasing.

Shopping Discount Example

Imagine a jacket is priced at:

$180

and is advertised as:

35% off

Calculate the savings:

$180 × 0.35 = $63

Subtract the discount:

$180 − $63 = $117

So:

Original Price: $180

Discount: 35%

You Save: $63

Sale Price: $117

Online Shopping Discount Example

Suppose an online store lists a product at:

$79.99

with:

20% off

Discount:

$79.99 × 0.20 = $15.998

Rounded to the nearest cent:

$16.00

Sale price:

$63.99

Using a calculator helps avoid mistakes when prices include cents.

Why Use a Discount Calculator?

Discount calculations look simple, but they become less convenient when working with decimal prices or uncommon percentages.

For example:

17.5% off $86.49

is harder to calculate mentally than:

20% off $100

The calculator handles these calculations instantly and also shows the amount saved, so you can compare whether a promotion is worthwhile for your needs.

Compare Different Discounts

A discount comparison can be useful when deciding between different offers.

Suppose the original price is:

$200

At 10% off, you pay:

$180

At 20% off:

$160

At 25% off:

$150

At 30% off:

$140

At 50% off:

$100

The calculator automatically creates this comparison using the price you enter.

Can I Enter a Custom Discount?

Yes.

You are not limited to the quick percentage buttons.

You can enter values such as:

5%

12%

17.5%

35%

40%

65%

or another percentage between 0% and 100%.

This is useful when a retailer uses a less common promotional rate.

Can a Discount Be 0%?

Yes.

A:

0% discount

means there is no price reduction.

For example:

Original price:

$100

Discount:

0%

You save:

$0

Final price:

$100

What Happens at a 100% Discount?

A 100% discount reduces the sale price to zero.

For example:

Original price:

$75

Discount:

100%

Savings:

$75

Final price:

$0

However, if you are trying to calculate an unknown original price from a sale price and a 100% discount, there is not enough information to determine a unique original price. The calculator therefore prevents that reverse calculation.

What If the Sale Price Is Higher Than the Original Price?

If you use Find Discount % and enter a current price that is higher than the original price, the result is not a discount.

For example:

Original price:

$100

Current price:

$120

The difference is:

$20

This represents a:

20% price increase

rather than a discount.

The calculator identifies this situation so the result is not incorrectly presented as savings.

Can I Calculate Discounts in Different Currencies?

Yes.

Percentage calculations work the same regardless of currency.

For example:

$100 with 20% off = $80

and:

£100 with 20% off = £80

The calculator supports common display symbols including:

$

€

£

₹

and:

₨

Changing the currency changes the displayed symbol, not the calculation itself.

Decimal Discounts and Prices

The calculator supports decimal prices and decimal discount rates.

For example:

Original price:

$49.99

Discount:

17.5%

Discount amount:

approximately:

$8.75

Final price:

approximately:

$41.24

This is particularly useful for real-world retail prices that rarely use perfectly round numbers.

Common Discount Calculation Mistakes

One common mistake is subtracting the percentage number directly from the price.

For example, 20% off $100 means:

$100 − $20 = $80

But 20% off $200 does not mean:

$200 − $20

Instead:

20% of $200 = $40

so:

$200 − $40 = $160

Another common mistake is confusing the percentage saved with the percentage paid.

If something is 25% off, you pay:

75% of the original price

not 25%.

Using the calculator removes these common errors.

Discount Calculator for Shopping

This calculator is designed primarily for fast shopping calculations.

You can use it while:

shopping online, checking a retail sale, comparing two promotional prices, reviewing clearance discounts, estimating savings before checkout, or verifying whether an advertised percentage matches the displayed prices.

The goal is to provide the important answer—the price you actually pay—without requiring unnecessary financial inputs.

Frequently Asked Questions

How do I calculate a discount?

Multiply the original price by the discount percentage divided by 100.

Discount = Original Price × Discount % ÷ 100

Then subtract the discount from the original price.

How do I calculate the sale price?

Use:

Sale Price = Original Price − Discount Amount

How do I find the percentage discount?

Use:

(Original Price − Sale Price) ÷ Original Price × 100

How do I find the original price before a discount?

Use:

Sale Price ÷ (1 − Discount ÷ 100)

What is 20% off $100?

20% of $100 is:

$20

so the sale price is:

$80

What is 25% off $80?

25% of $80 is:

$20

so the final price is:

$60

What is 30% off $200?

30% of $200 is:

$60

so you pay:

$140

What is 50% off $150?

50% of $150 is:

$75

so the sale price is:

$75

Can I use a decimal discount like 17.5%?

Yes. The calculator supports decimal discount percentages.

Can I find the discount if I only know the old and new prices?

Yes. Use Find Discount %.

Can I calculate the original price from the sale price?

Yes. Use Find Original Price and enter the sale price and discount percentage.

Calculate Your Discount Instantly

Use the Discount Calculator whenever you want to know how much a sale actually saves you.

Choose Sale Price to calculate the final price after a discount, Find Discount % to calculate the percentage saved between two prices, or Find Original Price to work backward from a discounted price.

The calculator gives you the information that matters most when shopping:

Original Price → Discount → Amount Saved → Price You Pay

without unnecessary inputs or complicated settings.