How to Calculate a Discount and Sale Price
Sale price = original x (1 - discount/100). 30% off 4000 JPY = 4000 x 0.70 = 2800 JPY, saving 1200 JPY. The discount amount = original x discount/100.
Open the interactive Everyday Lifestyle tool →Key facts
| Sale price | original x (1 - rate/100) |
|---|---|
| Amount saved | original x rate/100 |
| 30% off 4000 | 2800 JPY (save 1200) |
| 20% off 1500 | 1200 JPY (save 300) |
| Half price (50%) | original x 0.5 |
Frequently asked questions
How much is 30% off?
Multiply by 0.70. A 4000 JPY item at 30% off is 2800 JPY, saving 1200 JPY.
How do I find the original price from a sale price?
Divide the sale price by (1 - rate/100). A 2800 JPY item at 30% off was 2800 / 0.7 = 4000 JPY.
What is the formula for percent off?
Sale price = original x (1 - discount percent / 100).
Related pages
Discount Calculator is part of Everyday Lifestyle on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.
Part of GOAT Lab — 26 free, browser-based science, engineering and developer tools. No sign-up.