20 percent as a probability

Percent to Probability Converter

What is 20% chance as a 1 in X probability?

Answer

A 20% chance is

1 in 5

On average once per 5 tries — not a guarantee: tries are independent. As odds it is 1 to 4 (1 for, 4 against).

Chance it happens at least once
chance		tries
50%		by try 4
≈ 67.2%		5 tries (= X)
90%		by try 11
95%		by try 14
99%		by try 21

20% = 20 ÷ 100 = 0.2; X = 1 ÷ 0.2 = 5

Nearby values and other forms

See Also

Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage
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Percent of Number - Calculate percent of a number
Spin the Wheel - Random name picker and decision wheel — spin it and it chooses for you
Random Number Generator - Pick a random whole number between two bounds

Percent to Probability Conversion Table

Percent	Probability
5%	1 in 20
6%	≈ 1 in 16.67
7%	≈ 1 in 14.29
8%	1 in 12.5
9%	≈ 1 in 11.11
10%	1 in 10
11%	≈ 1 in 9.09
12%	≈ 1 in 8.33
13%	≈ 1 in 7.69
14%	≈ 1 in 7.14
15%	≈ 1 in 6.67
16%	1 in 6.25
17%	≈ 1 in 5.88
18%	≈ 1 in 5.56
19%	≈ 1 in 5.26
20%	1 in 5
21%	≈ 1 in 4.76
22%	≈ 1 in 4.55
23%	≈ 1 in 4.35
24%	≈ 1 in 4.17
25%	1 in 4
26%	≈ 1 in 3.85
27%	≈ 1 in 3.7
28%	≈ 1 in 3.57
29%	≈ 1 in 3.45
30%	≈ 1 in 3.33
31%	≈ 1 in 3.23
32%	≈ 1 in 3.13
33%	≈ 1 in 3.03
34%	≈ 1 in 2.94

FAQ

What is 20% chance as a 1 in X probability?

A 20% chance is 1 in 5

How do you convert 20% to a 1 in X probability?

To convert 20% to a "1 in X" format, divide 1 by (20 / 100). The result is 1 in 5.

What is 20% as a fraction?

20% is 20 out of every 100, which as a fully reduced fraction is 1/5.