About This Tool
What is Discount Calculator?
A tool for calculating discounted prices from original prices and rates, or reverse-calculating discount rates from original and sale prices. Useful for shopping to see actual savings, or for setting sales prices.
How to Use
- Select the calculation mode (sale price/discount rate/original price).
- Enter the required values (original price, discount rate, sale price).
- Click 'Calculate'.
- View the result and savings amount.
Key Features
- Sale price calculation (original × discount rate)
- Discount rate reverse calculation
- Original price reverse calculation
- Savings amount display
Tips
- A 20% discount means you pay 80% of the original price.
- Stacked discounts (e.g., 30% + additional 20%) equal 44% total (0.7 × 0.8 = 0.56).
- Higher discount rates proportionally increase savings amounts.
Discount Calculator
Calculate discount price, rate, or original price
Frequently Asked Questions
叠加（复合）折扣如何计算？▼
叠加折扣是顺序应用而非相加。30%折扣后再20%折扣不等于50%。先对原价打7折，再对已折价打8折：0.7 × 0.8 = 0.56，即支付原价的56%——总折扣44%。
如何从售价计算原价？▼
使用'计算原价'模式。原价 = 售价 / (1 - 折扣率)。例如25%折扣后60美元：60 / (1 - 0.25) = 60 / 0.75 = 80美元原价。
'折扣率'和'加价率'有什么区别？▼
折扣率是从原（售）价减少的百分比。加价率是在成本（进货）价上增加的百分比。它们产生不同的数字：50美元成本的商品以100美元出售是100%加价，但50%折扣使其回到成本价。零售商用加价定价；消费者在促销中看到折扣率。