Simplify 18/36

18/36 simplified is 1/2, after dividing the top and bottom by 18.

Result

Answer

\frac{18}{36} = \textcolor{#0b5c56}{\frac{1}{2}}

18/36 simplifies to 1/2.

  • Greatest common factor: 18
  • Decimal: \displaystyle 0.5
  • Percent: 50%
18/361/2

Same amount, fewer parts

Step-by-step solution

The problem

\frac{18}{36}

  1. Find the greatest common factor. List the factors of each:
    Factors of 18: 1, 2, 3, 6, 9, 18
    Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
    The greatest common factor (GCF) is 18.

    \text{GCF}(18, 36) = 18

  2. Divide the top and bottom by 18. Dividing both by the same number keeps the value the same.

    = \frac{18 \div 18}{36 \div 18} = \textcolor{#0b5c56}{\frac{1}{2}}

All the working together

\begin{aligned} &\frac{18}{36} \\[8pt] &= \frac{18 \div 18}{36 \div 18} && \textcolor{#5b6660}{\textsf{divide by 18}} \\[8pt] &= \textcolor{#0b5c56}{\frac{1}{2}}\end{aligned}

18/36 in other forms

Simplest form1/2
Greatest common factor18
Decimal0.5
Percent50%
Equal fractions2/4, 3/6, 4/8, 5/10

Fractions over 36 simplified

FractionSimplest formDecimal
1/36already simplest0.02777…
2/361/180.0555…
3/361/120.08333…
4/361/90.111…
5/36already simplest0.13888…
6/361/60.1666…
7/36already simplest0.19444…
8/362/90.222…
9/361/40.25
10/365/180.2777…
11/36already simplest0.30555…
12/361/30.333…
13/36already simplest0.36111…
14/367/180.3888…
15/365/120.41666…
16/364/90.444…
17/36already simplest0.47222…
18/361/20.5
19/36already simplest0.52777…
20/365/90.555…
21/367/120.58333…
22/3611/180.6111…
23/36already simplest0.63888…
24/362/30.666…
25/36already simplest0.69444…
26/3613/180.7222…
27/363/40.75
28/367/90.777…
29/36already simplest0.80555…
30/365/60.8333…
31/36already simplest0.86111…
32/368/90.888…
33/3611/120.91666…
34/3617/180.9444…
35/36already simplest0.97222…

Frequently asked questions

What is 18/36 in simplest form?

18/36 simplifies to 1/2. Divide the top and bottom by 18, their greatest common factor: 18 ÷ 18 = 1 and 36 ÷ 18 = 2.

What is the greatest common factor of 18 and 36?

The GCF of 18 and 36 is 18 – the biggest number that divides both with nothing left over.

Is 18/36 equal to 1/2?

Yes. Both are 0.5 (50%). Simplifying changes how the fraction is written, not its value.

More fractions to simplify

Any other fraction or mixed number: use the Simplify Fractions Calculator.