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Fraction simplifier

Reduce a fraction to its simplest form and see its decimal value.

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The Fraction simplifier turns Numerator, Denominator into Simplified fraction, Decimal value, instantly and for free. For instance, with Numerator = 8 and Denominator = 12 it returns Simplified fraction = 2/3 and Decimal value = 0.667.

How to use it

  1. Enter your values: Numerator, Denominator.
  2. Read the result instantly: Simplified fraction, Decimal value.

Frequently asked questions

What does the Fraction simplifier actually compute?

It takes Numerator and Denominator and derives Simplified fraction and Decimal value from them. The calculation is live as you type, so the result updates on every change.

What information do I need to provide?

2 values: Numerator and Denominator. Nothing else is required — no account, no file upload.

Can you show a worked example?

With Numerator = 8 and Denominator = 12, the calculator returns Simplified fraction = 2/3 and Decimal value = 0.667. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

When would I actually use this?

Getting through a problem set: solving for the unknown, factoring an expression, and — more usefully — seeing the steps that got there.

What is the most common mistake?

Losing a solution when both sides are squared or divided by an expression. Squaring can add roots that do not satisfy the original equation, and dividing can remove one — check every answer back in the original.

What is the difference between the Fraction simplifier and the Algebraic Expression Simplifier?

This one returns Simplified fraction and Decimal value; the Algebraic Expression Simplifier returns Result. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Boolean Algebra Simplifier is the closest one after this: Reduces a boolean expression to a minimal sum of products, accepting every common notation — AB, A·B, A&B for AND, A+B or A|B for OR, ~A, !A or A' for NOT, plus XOR, NAND and NOR. Shows the prime implicants, not just the final answer.

What else is worth having open alongside it?

Radical Simplifier and Continued fraction calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from, and how current are they?

The algebra is symbolic where the expression allows it and numeric otherwise, and the tool says which it used. Exact results are given as fractions or radicals rather than rounded decimals.

Further reading

All guides →
How-toHow to Convert a Fraction to a DecimalDivide the top number by the bottom. Here's the rule, why some fractions repeat, how to round them, and how to turn the result into a percentage.How-toHow to Convert a Percentage to a Fraction: Over 100, Then ReduceA percentage is just a fraction out of 100. Put the number over 100, reduce to lowest terms, and handle decimal percentages like 12.5% by clearing the decimal first. With examples.How-toHow to Multiply and Divide Fractions: Multiply Across, Flip to DivideMultiplying fractions needs no common denominator — just multiply across. Dividing means multiplying by the reciprocal. Learn both with worked examples and how to simplify.How-toHow to Add and Subtract Fractions: Common Denominator, Combine, SimplifyYou can only add or subtract fractions that share a denominator. Learn to find a common denominator, combine the numerators, and simplify the result, with a worked example.How-toHow to Round Numbers: Round Half Up, Round Half to Even, and MoreRound to any decimal place or number of significant figures, and learn when to use round half up versus round half to even to avoid bias.How-toHow to Find Prime Factors: Factor Trees and the Division MethodBreak any whole number into its prime building blocks with a factor tree or repeated division — and write the result as a clean prime factorization with exponents.