Sumwise

What is 18/42 as a Decimal?

18/42 = 0.(428571)

Decimal
0.(428571)
Percentage
42.8571%
Simplified
3/7
Type
proper fraction

Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it

How to work it out

  1. Simplify: 18/42 = 3/7 (divide by 6)
  2. Divide the numerator by the denominator: 18 ÷ 42 = 0.42857143
  3. The digits in brackets repeat forever: 0.(428571)
  4. Check: Work backwards: 0.428571 × 42 = 18, which is 18 once rounding is allowed for.

In a spreadsheet: =18/42. Dividing the denominator by the numerator flips the fraction. A bar over (or brackets around) digits means they repeat forever.

What the result means

As a percentage, 18/42 is 42.8571%. It is a proper fraction, so its value is between 0 and 1, and it is less than one half.

Cooking: a recipe that asks for 18/42 of a cup needs 0.429 cups, about 102.8571 millilitres.

Comparing with nearby fractions

18/42 (0.4286) is bigger than 18/43 (0.4186) and smaller than 19/42 (0.4524). A bigger denominator means smaller pieces, so with the same numerator the fraction gets smaller.

Related results

Results for nearby numbers
1/42 as a decimal

1/42 = 0.0(238095)

2/42 as a decimal

2/42 = 0.(047619)

3/42 as a decimal

3/42 = 0.0(714285)

19/42 as a decimal

19/42 = 0.4(523809)

17/42 as a decimal

17/42 = 0.4(047619)

The other way round: 42/18 as a decimal

Practice

4/45 as a decimal
Show answer

4/45 = 0.0(8)

94/33 as a decimal
Show answer

94/33 = 2.(84)

13/50 as a decimal
Show answer

13/50 = 0.26

59/40 as a decimal
Show answer

59/40 = 1.475

10/15 as a decimal
Show answer

10/15 = 0.(6)

1/75 as a decimal
Show answer

1/75 = 0.01(3)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 18/42 as a Decimal?

18/42 as a decimal is 0.(428571). Long-division steps and simplified fraction.

What is 18/42 as a percentage?

42.8571%. Multiply the decimal 0.428571 by 100.

What is 18/42 in simplest form?

3/7. Divide the top and bottom by their greatest common factor, 6.