Math calculator
Simplifying Fractions Calculator
Reduce a fraction to lowest terms with the GCF, mixed number, and decimal.
Quick answer
How do you simplify a fraction?
Find the greatest common factor of the numerator and denominator, then divide both by it. For 12/18 the GCF is 6, so 12/18 = 2/3.
a/b = (a ÷ GCF) / (b ÷ GCF)
⚡ Answer updates as you type · Enter = calculate · Esc = reset
- Find the GCF of 12 and 18: GCF = 6
- Divide top and bottom by 6: 12 ÷ 6 = 2, 18 ÷ 6 = 3
- Simplified fraction: 2/3
- Decimal: 2 ÷ 3 = 0.666667
Reduce any fraction to lowest terms by dividing by the greatest common factor, plus mixed number, decimal, and percent.
About this Simplifying Fractions Calculator
The Simplifying Fractions Calculator reduces any fraction to lowest terms by finding the greatest common factor (GCF) and dividing the top and bottom by it. It also converts improper fractions to mixed numbers and shows the decimal and percent.
What you'll need
- • Numerator (top number)
- • Denominator (bottom number)
How it works
- 1. Enter the top number.
- 2. Enter the bottom number.
- 3. Read the simplified fraction.
- 4. See the mixed number and decimal.
- 5. Follow the GCF steps.
Worked example
42/56: GCF = 14, so 42/56 = 3/4 = 0.75 = 75%.
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Simplifying Fractions Calculator FAQ
What is the Simplifying Fractions Calculator?
The Simplifying Fractions Calculator is a free online tool that helps you reduce a fraction to lowest terms with the gcf, mixed number, and decimal.
How do I use the Simplifying Fractions Calculator?
Open the Simplifying Fractions Calculator, enter the requested values, and review the instant estimate on the page.
Is the Simplifying Fractions Calculator free?
Yes. The Simplifying Fractions Calculator is free to use on Fast Online Calculator and does not require an account.
What is simplest form?
A fraction is in simplest form when the top and bottom share no common factor except 1.
How do I simplify an improper fraction?
Reduce it first, then divide: 14/4 = 7/2 = 3 1/2.
Can I simplify negative fractions?
Yes. The sign goes in front: −10/15 = −2/3.
Why divide by the GCF?
Dividing by the greatest common factor reduces the fraction in one step instead of many.
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