Discount Calculator
Calculate discounted prices and savings from the original price and discount rate (%OFF). Supports multiple discounts (e.g., 30% OFF then 10% OFF).
Last updated:
How to Use
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- 1
Enter Original Price
Enter the original price of the item before any discounts.
- 2
Enter Discount Rate
Enter the discount rate (% OFF). Use the 'Add Discount' button for multiple discounts.
- 3
View Results
Final price, individual discount amounts, and effective discount rate are displayed in real-time.
Original Price
Result
Please enter an amount
What is Discount Calculator?
Discount Calculator is an online tool that calculates discounted prices and savings from the original price and discount rate. Enter the original price and discount percentage to instantly see the sale price and amount saved. It also supports multiple stacked discounts (e.g., 30% OFF then additional 10% OFF) and accurately calculates the final effective discount rate.
Key Features
- Calculate discounted price from original price and discount rate
- Display total discount amount and savings
- Support for multiple stacked discounts (up to 5)
- Automatic calculation of effective discount rate
- Real-time calculation with instant results
Use Cases
- Calculating the final price of a Black Friday or Cyber Monday deal
- Finding the actual savings when a store offers 40% off select items
- Stacking a 20% off coupon on top of an already-discounted sale price
- Comparing discounts across Amazon, Target, and Best Buy during holiday shopping
- Checking whether a clearance item is genuinely a good deal vs the regular price
- Figuring out how much you save on a year-end clothing or electronics sale
FAQ
How do multiple discounts work?
Multiple discounts are applied sequentially. For example, with ¥10,000 at 30% OFF then 10% OFF: First ¥10,000 × 70% = ¥7,000, then ¥7,000 × 90% = ¥6,300. Note: 30% + 10% does NOT equal 40% OFF.
What is the effective discount rate?
The effective rate is the actual percentage saved from the original price. In the example above, the final price of ¥6,300 is 37% off the original ¥10,000, so the effective rate is 37%.
Why isn't 30% + 10% equal to 40%?
Because the second discount is applied to the already-discounted price, not the original. Each subsequent discount is applied to a smaller base amount, resulting in a smaller actual discount.
Is rounding applied?
The tool calculates decimal values for accuracy. For actual purchases, stores typically round to the nearest yen, which may result in slight differences from the displayed amounts.
Is my data saved?
No. Calculations run as JavaScript in your browser. Input data is not transmitted or stored on any server.