Stable Numbers
Discount Calculator
Work out the price after discount, how much you save, or the discount percent. Clean, quick and accurate.
Need to add VAT instead of a discount? Try the VAT calculator when ready.
How it works
A discount is a percentage taken off the original price. If the price is £120 and the discount is 25 percent, the saving is £30 and the sale price is £90. The method is simple:
Saving = Original × (Discount ÷ 100)
Sale Price = Original − Saving
If you know the sale price instead, the discount percent is the saving divided by the original, then multiplied by 100.
When this helps
- Shopping and seasonal sales
- Comparing offers across shops
- Checking if a deal is worth it
- Simple budgeting for households and students
It updates as you type and keeps the layout clean. The result is easy to read and ready to use.
Explore more in the percentage tools hub.