17
21
0.(809523)
17/21 as a decimal is 0.(809523)
Repeating
17/21 is 0.(809523), or 80.(952380)%. It repeats with a period of 6 digits.
The digits in brackets repeat for ever. 0.1(6) is 0.16666… and 0.(3) is 0.3333…
Seen as a length
The whole is cut into as many parts as the denominator, and as many are filled as the numerator. The tick marks the halfway point.
- Decimal
- 0.(809523)
- Percent
- 80.(952380)%
- Ratio
- 17 : 4
- Repeating part
- 809523 (6)
- Degrees of a circle
- 291.(428571)°
- Minutes of an hour
- 48.(571428)
- Reciprocal
- 21/17 = 1 4/17
- Equivalent fractions
- 34/42, 51/63, 68/84, 85/105
Same denominator
Nearby values
How to read this
- The digits in brackets repeat for ever — 0.1(6) means 0.16666…
- If the denominator has no prime factors besides 2 and 5, the decimal stops.
- Equal fractions do not get separate pages: looking up 2/4 brings you to 1/2.
- A percentage is the same number times 100; degrees are the same number times 360.
Frequently asked questions
Q. What is 17/21 as a decimal?
0.(809523). The 6 digits in brackets repeat for ever.
Q. What is 17/21 as a percentage?
80.(952380)%.
Q. Which fractions equal 17/21?
34/42, 51/63, 68/84, 85/105 … multiplying top and bottom by the same number leaves the value unchanged.
Q. What is the reciprocal of 17/21?
21/17, or 1 4/17 as a mixed number.