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Fraction Calculator with steps

Enter two fractions, mixed numbers or decimals, pick an operation and get the reduced result with a numbered outline of how it was reached.

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Answer

Enter your numbers or pick an example — the answer and the steps appear here instantly.

What the fraction calculator gives you

  • All four operations

    Add, subtract, multiply or divide two values. Mixed numbers like 2 1/3, decimals like 0.75 and negative values are turned into fractions before any arithmetic happens.

  • A step outline

    Sums and differences show the least common denominator and the rewritten fractions; products multiply straight across, and quotients flip the second fraction to its reciprocal.

  • Three forms of the answer

    The result is given as a fully reduced fraction, as a mixed number when it is improper, and as a decimal. A decimal that repeats is rounded, shown with ≈ and labeled Rounded.

  • Exact, private and free

    Big-integer fraction arithmetic runs right in your browser, so 1/10 + 2/10 is exactly 3/10 with no floating-point drift. There is no sign-up, and nothing you type leaves the page.

How to use it

  1. Type the first fraction

    Use a slash for fractions (3/4), a space for mixed numbers (1 1/2), or a decimal point or comma (0.6 or 0,6). An example chip fills the form for you.

  2. Choose +, −, × or ÷

    Pick the operation from the list, then enter the second fraction in the same way.

  3. Press Calculate

    The reduced answer, its mixed-number and decimal forms and the numbered steps appear straight away, and the copy button puts the result on your clipboard.

  4. Want the reasoning in words?

    Select “Explain step by step” and the AI Math Solver writes out why each step works. AI text can contain mistakes, so compare it with the outline above it.

How to add, subtract, multiply and divide fractions by hand

Adding or subtracting needs a common denominator. For 3/4 + 5/6, factor the denominators (4 = 2², 6 = 2 × 3) and take each prime at its highest power: the least common denominator is 2² × 3 = 12. Rewrite 3/4 as 9/12 and 5/6 as 10/12, add the numerators to get 19/12, and keep the denominator. As a mixed number that is 1 7/12.

Mixed numbers become improper fractions before anything else: 2 1/3 = (2 × 3 + 1)/3 = 7/3. So 2 1/3 − 3/4 = 28/12 − 9/12 = 19/12, which happens to match the sum above.

Multiplication needs no common denominator at all: multiply the tops, then the bottoms. 2/3 × 9/10 = 18/30, and dividing both parts by their greatest common factor, 6, gives 3/5. Division turns into multiplication by the reciprocal of the second fraction: 3/4 ÷ 1/2 = 3/4 × 2/1 = 6/4 = 3/2, or 1 1/2.

Always finish by reducing. A fraction is in lowest terms when its numerator and denominator share no factor other than 1; 19/12 already is, 18/30 was not. Dividing by zero has no answer, so a second fraction equal to 0 is flagged instead of computed.

Frequently asked questions

Yes. Write a mixed number with a space between the whole part and the fraction, such as 1 1/2 or −3 2/5. Decimals with a point or a comma work too, and 0.125 is read as exactly 1/8.

Both are shown because each is useful: the reduced fraction is exact, while the decimal is easier to compare. When the decimal never ends, as with 19/12 = 1.58333…, it is rounded, marked ≈ and tagged Rounded, and the fraction stays exact.

Yes. Every result is divided by the greatest common factor of its numerator and denominator, and the outline names the factor that was used. An improper result is also written as a mixed number.

The calculator stops and tells you the division is undefined instead of printing a number. The same check catches a second fraction that equals zero, such as 0/7.

The calculator, its answer and the step outline cost nothing and need no account. The “Explain step by step” write-up is metered: it is included in the Pro plans* (*fair use: up to 300 runs a day across the writing, study and code tools), uses 2 credits without a plan, and signed-out visitors can read a free preview of its opening.

Use it to check answers you have worked out yourself and to see where a method went wrong. Follow your teacher's rules about calculators and AI help on anything that is graded.

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