Simplify Fractions Calculator

Simplify Fractions Calculator does one job: it reduces a single fraction to its lowest terms. Enter a numerator and a denominator, tap Calculate, and the app divides both by their greatest common divisor.

Example
84 over 126 becomes 2/3, because 42 divides both numbers. An improper fraction such as 98/42 is shown as the mixed number 2 1/3.

How to use it
• Type the numerator, which may be negative
• Type the denominator, which must be a positive whole number
• Read the result under Simplified Fraction

Where it helps
• Checking a worksheet or homework answer before you write it down
• Writing a measurement, ratio or share in its simplest form
• Turning a large fraction from a recipe or a spreadsheet into one people can read at a glance
• Confirming that a fraction is already in lowest terms

Good to know
• The denominator cannot be zero
• The app reduces one fraction only; it does not add, subtract, multiply or divide fractions
• Calculator.io has separate tools for fraction arithmetic and decimal conversion, in the More calculators menu

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