Discount Calculator
Work out the sale price and savings for % off or Taiwan-style 折 discounts, including stacked discounts and spend-and-save coupons.
Price after discount
Enter a price and a discount to see what you pay.
How to use
- Choose a discount style first. “% off” means 20 = 20% off. “Taiwan zhe” follows the local 折 convention, where 8 means pay 80% and 85 means pay 85%. The hint under each field shows the percentage you actually pay.
- Enter the original price and the discount. The sale price, your savings and each step appear right away. Click “Add another discount” for stacked discounts.
- For offers like “spend 2,000, get 200 off”, tick “Spend-and-save coupon” and fill in both amounts; “Repeat for every full amount spent” applies it once per threshold reached.
- Pick how the final price is rounded (nearest whole unit by default) and click “Copy” to grab it.
FAQ
Is 20% off the same as 80% of the price?
Yes: 20% off means you pay 80%. In Taiwan this is written “8 折” (pay 8 tenths), and 15% off is “85 折”. The two conventions point in opposite directions, so the tool makes you choose one instead of guessing.
Is 20% off and then 10% off the same as 30% off?
No. Discounts multiply: 0.8 × 0.9 = 0.72, so you pay 72%, which is 28% off. On a 1,000 item that is 720, while 30% off would be 700.
How does the Taiwan 折 notation work?
A 折 number tells you how many tenths you pay: 8 折 = 80%, 7.5 折 or 75 折 = 75%, 95 折 = 95%. The tool reads numbers from 1 to 9.9 as tenths (8.5 = 85%) and two-digit numbers from 10 to 99 as percentages (85 = 85%).
When is the spend-and-save coupon applied?
After all percentage discounts: the discounted price is compared with the threshold, and the result is rounded last. Some shops check the threshold against the original price, so confirm the rules at checkout.
How is the final price rounded?
Nothing is rounded along the way; only the final price is rounded with the rule you pick: to the nearest whole unit, down, up, or kept to 2 decimals.
Is my data uploaded?
No. Everything is calculated in your browser, with no network connection needed.
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