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Percentage Calculator
Discounts, tax, tips, growth-rate — all in one place.
Result
16.00
= 20% × 80 = 20/100 × 80
20% of 80 is the same as 80 × 0.20 — move the decimal twice.
| Mental math | Shortcut | How |
|---|---|---|
| 10% | ÷ 10 | Move the decimal one place left |
| 5% | 10% halved | Half of the 10% figure |
| 20% | ÷ 5 | One fifth |
| 25% | ÷ 4 | A quarter |
| 50% | ÷ 2 | Half |
From the blog
Percentage Calculator: What It Is and Who It's For — read the guide
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