Discount Calculator
Final price, savings, discount % and original price in secondsWhat Is a Discount Calculator?
A Discount Calculator tells you how much you save and what you finally pay when a shop gives you a percentage off. You enter the original price and the discount, and it shows the discount amount and the final price instantly. This tool goes further than a basic calculator. It can add a second (extra) discount, add tax or GST, handle many items at once, find the discount percentage from two prices, and even work backwards to find the original price before the sale.
How to Use the Tool
Tip: tap a quick percentage button (5%, 10%, 25% and so on) to fill the discount field in one tap. Use the Currency list to change the symbol.
Discount Formulas
Final price = Original price – Discount amount
Discount % = (Original – Sale) / Original x 100
Original price = Sale price / (1 – Discount % / 100)
Price with tax = Price after discount x (1 + Tax % / 100)
Worked Examples
Quick Discount Chart (on a 1,000 item)
| Discount | You save | You pay |
|---|---|---|
| 10% | 100 | 900 |
| 20% | 200 | 800 |
| 25% | 250 | 750 |
| 30% | 300 | 700 |
| 40% | 400 | 600 |
| 50% | 500 | 500 |
| 60% | 600 | 400 |
| 70% | 700 | 300 |
Important to Know
Smart Shopping Tips
- Compare the final price, not the big percentage on the banner
- Check whether tax or GST is added after the discount
- Use Find discount % to test whether a sale is real
- Check the price history before buying in a big sale
- Add bank card offers as an Extra discount
- Buy only what you need, a cheap price is still spending
Features
- Live results while you type
- Extra (second) discount support
- Tax / GST and quantity support
- Find discount % from two prices
- Find the original price from sale price
- Rupee, dollar, euro and pound symbols
- Quick percentage buttons
- Copy result button
- Free, no signup, works on mobile
- Private: nothing is sent or stored
Who Can Use It?
Shoppers comparing offers, shop owners setting sale prices, students learning percentages, freelancers preparing discounted quotes, and anyone who wants to check a festival or clearance sale quickly.
FAQ
How do I calculate a discount?
Multiply the original price by the discount percentage and divide by 100. Subtract that amount from the original price to get the final price.
How do I calculate 20% off?
Multiply the price by 0.20 to get the discount, then subtract it. A quicker way is to multiply the price by 0.80 to get the final price directly.
How do I find the discount percentage?
Subtract the sale price from the original price, divide the result by the original price, and multiply by 100. Our Find discount % tab does this for you.
How can I find the original price before the discount?
Divide the sale price by 1 minus the discount rate. For a 20% discount, divide by 0.80. Use the Find original price tab.
Is 20% plus 10% the same as 30% off?
No. The second discount works on the reduced price, so 20% then 10% equals 28% in total.
Is tax added before or after the discount?
In most shops tax or GST is added after the discount, on the reduced price. This tool follows the same order.
Can I use it for more than one item?
Yes. Enter the price of one item and the quantity. The tool shows the total and the price per item.
Is my data saved or shared?
No. Everything is calculated inside your browser and nothing is sent to any server.
Can the discount be more than 100%?
No. A discount of 100% means the item is free, and anything above is not possible, so the tool shows a message.
