18/21 as a Decimal and Percent
18/21 = 0.857142 = 85.714286%
18/21 as a decimal is 0.857142 (the digits under the bar repeat forever, so rounded it is 0.8571428571). In simplest form it is 6/7.
How to convert 18/21 to a decimal
Divide the numerator by the denominator: 18 ÷ 21 = 0.857142. With long division:
| Divide | Result digit | Remainder |
|---|---|---|
| 18 ÷ 21 | 0 | 18 |
| 180 ÷ 21 | 8 | 12 |
| 120 ÷ 21 | 5 | 15 |
| 150 ÷ 21 | 7 | 3 |
| 30 ÷ 21 | 1 | 9 |
| 90 ÷ 21 | 4 | 6 |
| 60 ÷ 21 | 2 | 18 |
A remainder comes back that we have seen before, so the digits 857142 repeat forever.
As a percentage
Multiply the decimal by 100: 0.8571428571 × 100 = 85.714286%.
18/21 in other forms
- Decimal
- 0.857142
- Percent
- 85.714286%
- Simplest form
- 6/7 (divide both by 3)
- Reciprocal
- 21/18 = 1.1666666667
- Ratio
- 6:7
Equivalent fractions
Nearby fractions
| 15/21 | 0.7142857143 |
| 16/21 | 0.7619047619 |
| 17/21 | 0.8095238095 |
| 19/21 | 0.9047619048 |
| 20/21 | 0.9523809524 |
Frequently asked questions
What is 18/21 as a decimal?
18/21 = 0.8571428571 (repeating).
What is 18/21 as a percent?
18/21 = 85.714286%.
What is 18/21 in simplest form?
18/21 simplifies to 6/7.