Discount Calculator | Calculate Sale Price, Discount Rate and Savings
Calculate discounted prices, savings, discount rates, and reverse values for percentage discounts, fixed-amount discounts, and stacked offers. It also supports tax-inclusive or tax-exclusive views and rounding choices, making sale and coupon comparisons easier.
Quick rates
Settings
Final price
2,400 yen
600 yen saved
- Original price
- 3,000 yen
- Sale price
- 2,400 yen
- Discount amount
- 600 yen
- Discount rate
- 20%
- Tax-included final price
- 2,400 yen
- Tax-excluded final price
- 2,181 yen
3,000 yen with 20% off is 2,400 yen. You save 600 yen.
What you can do with Discount Calculator
- Calculate percentage discounts, fixed amount discounts, reverse discount rates, and original prices.
- Switch tax-included or tax-excluded prices, tax rates, and rounding modes.
- Check stacked discounts and compare which offer saves more.
How to use
- Choose the calculation type and enter the original price.
- Enter the discount rate, discount amount, or sale price required for that mode.
- Review the final price, savings, and effective discount rate as they update automatically.
How to read the results
The top of the result area shows the final price, reverse-calculated original price, or reverse-calculated discount rate depending on the mode. The savings amount is shown clearly below it.
The breakdown lists original price, final price, discount amount, and discount rate. If tax settings are enabled, tax-included and tax-excluded final prices are shown as well.
For stacked discounts, the effective discount rate is also shown. For example, 20% off and then 10% off 10,000 yen becomes 7,200 yen, which is effectively 28% off.
Ways to use it
Checking sale prices
Enter a discount rate or amount to see the final sale price quickly.
Estimating payment after a coupon
Apply coupon discounts and compare the amount you will actually pay.
Comparing amount-off and percent-off offers
See which offer saves more when a store shows both fixed-amount and percentage discounts.
Reviewing store or ecommerce markdowns
Check stacked discounts, tax settings, and rounding to compare with store or ecommerce displays.
How input data is handled
- Actual store or ecommerce totals may differ by one yen depending on tax and rounding order.
- Inputs are saved in this browser. Share URLs include prices and discount settings, so avoid personal information.
FAQ
- How do I calculate 20% off?
- Multiply the original price by 0.8. For example, 20% off 3,000 yen is 3,000 × 0.8 = 2,400 yen.
- What percent off is 500 yen off?
- Divide the discount amount by the original price and multiply by 100. For example, 500 yen off 2,500 yen is 20% off.
- Is 20% off and then 10% off the same as 30% off?
- No. Applying 20% off and then 10% off to 10,000 yen results in 7,200 yen, which is effectively 28% off.
- Should I calculate from tax-included or tax-excluded prices?
- Use tax-included prices when you want the amount you will actually pay. For tax-excluded prices, check the discounted price after adding tax.
- Why can the result differ from a store by one yen?
- Rounding and tax calculation order differ by store and service, so small one-yen differences can happen.
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