The answer is 50. Below: three ways to calculate it, a mental shortcut, and the real-world contexts where this percentage shows up.
50% of 100 is 50.
Half of anything is the most familiar percentage shortcut.
Divide the percent by 100 to convert it: 50 ÷ 100 = 0.5.
Multiply: 100 × 0.5 = 50.
50% means 50/100. So 50% of 100 is (50 × 100) ÷ 100.
Compute: 50 × 100 = 5000, then divide: 5000 ÷ 100 = 50.
For 50%, halve the number. Half of 100 is 50.
50% is half. Multiplying by 0.5 and dividing by 2 give the same answer.
Half of 100 is 50. A "buy one get one half off" deal at this price would save you $50 on the second item.
If you only needed to look up this one number, here are some related ones using the same base of 100:
| Calculation | Answer |
|---|---|
| 10% of 100 | 10 |
| 25% of 100 | 25 |
| 75% of 100 | 75 |
| 100% of 100 | 100 |
| Calculation | Answer |
|---|---|
| 50% of 10 | 5 |
| 50% of 25 | 12.5 |
| 50% of 50 | 25 |
| 50% of 75 | 37.5 |
For any percentage of any number, use our percentage of a number calculator.
Multiply 100 by 0.5 (the decimal form of 50%). Or equivalently, multiply by 50/100. The result is 50.
Divide 50 by 100 and multiply by 100. That is exactly 50% — confirming the original calculation.