Discount Calculator
Calculate sale price, discount percentage, or original price with amount saved
Enter the required values above to calculate the discount.
What is a Discount Calculator?
A discount calculator helps you quickly find the sale price after a percentage discount, determine what discount percentage was applied given the original and sale price, or figure out the original price before a discount was applied. It is useful for shopping, budgeting, and sales analysis — anytime you need to work with discounted prices fast.
How to Use the Discount Calculator
- Select what you want to calculate: Sale Price, Discount %, or Original Price
- Enter the two known values
- Optionally enter a quantity for bulk purchase totals
- See the result including savings amount and percentage instantly
Features
- Three calculation modes: sale price, discount %, and original price
- Shows amount saved in dollars and as a percentage
- Quantity field for calculating total savings on multiple items
- Instant reactive calculation — no submit button needed
Frequently Asked Questions
How do I calculate 20% off a price?
Select "Sale Price" mode, enter the original price, and type 20 in the discount field. The calculator will show you the final price and how much you save. For example, 20% off $50 = $40 (saving $10).
How do I find the original price before discount?
Select "Original Price" mode, enter the sale price and the discount percentage. The formula is: Original = Sale Price ÷ (1 − Discount%). For example, if a $80 item is 20% off, the original price was $100.
How do I calculate the discount percentage?
Select "Discount %" mode, enter the original price and the sale price. The formula is: Discount% = (Original − Sale) ÷ Original × 100. For example, from $120 down to $90 is a 25% discount.