How It Works
- Enter the normal price — the price before the discount.
- Enter the discounted price — the sale price you were offered.
- CalcPerDi instantly calculates the exact percentage off, shown to one or two decimal places.
Discount Percentage Calculator
Enter the original price and the sale price below, and CalcPerDi will instantly work out what percentage off you're getting — free, no sign-up needed.
Example
Say a jacket normally costs $50 and it's on sale for $35. That's a saving of $15 — exactly 30% off. CalcPerDi does this math for you in a fraction of a second, which is handy for comparing deals while shopping online or in-store.
Frequently Asked Questions
What is a discount percentage calculator?
A discount percentage calculator works out what percent off you're getting when an item's price is reduced from its original price to a sale price.
How do I calculate a discount percentage manually?
Subtract the sale price from the original price, divide the result by the original price, then multiply by 100. For example: ($50 − $35) ÷ $50 × 100 = 30% off.
Is CalcPerDi free to use?
Yes. CalcPerDi is completely free, works instantly in your browser, and doesn't require any sign-up or download.
Does CalcPerDi work on mobile phones?
Yes. CalcPerDi is fully optimized for phones and tablets, so you can quickly check a discount while shopping in-store or online.