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Discount calculator
Enter the original price and the discount percentage to see the sale price and how much you save.
How it works
The discount amount is calculated as original price × (discount % ÷ 100), and the final price is simply the original price minus that amount — both values recalculate on every keystroke with no submit button needed.
FAQ
- Does the calculator handle discounts over 100%?
- Yes, mechanically — entering a discount above 100 just produces a negative final price, since the math is a plain percentage-of multiplication with no upper bound check. Real sales never do this, so treat a negative result as a sign of a typo.
- Why do my saved amount and final price update as I type?
- Both fields have an input event listener attached, so every keystroke in the price or discount box re-runs the calculation immediately — there's no submit button because none is needed.
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