Comprehensive Calculator Guide
This calculator multiplies a decimal by 100 to give the percentage, with the matching fraction in lowest terms. 0.75 = 75% = 3/4, 0.065 = 6.5% = 13/200 and 1.2 = 120% = 6/5. Useful whenever a calculator or spreadsheet gives you a decimal and you want it as a percentage, such as a pass rate, a discount or growth.
How it works
Percent means “per hundred”, so multiply by 100 — move the decimal point two places right. To go back, divide by 100.
Above 1 gives more than 100%: 1.2 is 120%, a 20% increase. A negative decimal gives a negative percentage, a fall.
How to Use
- Enter the decimal, such as 0.75 or 1.2.
- Check the decimal point is in the right place.
- Press “Convert” to see the percentage and the fraction.
Formula Used
Percentage = decimal × 100
Practical Examples
- Example 1
- 0.75 → 75% = 3/4.
- Example 2
- 0.065 → 6.5% = 13/200.
- Example 3
- 1.2 → 120% = 6/5.
Important Tips
- 0.05 is 5% but 0.5 is 50% — watch the zeros.
Common Mistakes to Avoid
- Moving the point only one place: 0.75 isn’t 7.5%.
Frequently Asked Questions
- How do I convert a decimal to a percentage?
- Multiply by 100.
- What is 0.25 as a percentage?
- 25%, a quarter.
- How do I convert a percentage to a decimal?
- Divide by 100.