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Arithmetic Calculator

Fraction Calculator

Add, subtract, multiply, or divide two fractions and receive a simplified fraction, decimal value, and mixed-number form.

Instant answer Formula breakdown Browser-based Mobile friendly
Interactive calculator

Enter your values

Use the example values or replace them with your own. Required validation happens before the calculation.

Ready
Cannot be zero.
Cannot be zero.
Choose the fraction operation.
Calculated answer

Result

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Simple workflow

How to use the Fraction Calculator

Follow these steps to get a reliable result and understand how it was produced.

1

Enter both numerators and denominators.

2

Choose addition, subtraction, multiplication, or division.

3

Calculate to simplify the result and view its decimal form.

Understanding the calculation

The calculator creates a common denominator for addition or subtraction, then reduces the result using the greatest common divisor.

a/b ± c/d; a/b × c/d; a/b ÷ c/d

The result panel substitutes your numbers into this relationship and shows the important intermediate values.

Common uses

  • Recipe scaling and measurements
  • Learning equivalent fractions
  • Checking arithmetic homework

Accuracy tips

  • Denominators cannot be zero.
  • The final sign is kept in the numerator.
  • Improper fractions are also displayed as mixed numbers.
Helpful answers

Fraction Calculator FAQs

Important details about formulas, inputs, limitations, and result interpretation.

How is a fraction simplified?

The numerator and denominator are divided by their greatest common divisor.

Can I enter negative fractions?

Yes. Negative numerators or denominators are supported.

What is an improper fraction?

It is a fraction whose numerator has an absolute value at least as large as its denominator.

Can I use decimal inputs?

This calculator is designed for integer numerators and denominators.

Keep exploring

Try another useful tool from the same collection.

Basic Calculator Perform addition, subtraction, multiplication, division, remainder, and power calculations with a clear calculation trail. Percentage Calculator Solve percentage-of, what-percent, percentage change, increase or decrease, and percentage difference problems with the appropriate formula. Ratio & Proportion Calculator Simplify a two-part ratio and solve a missing fourth value in an equivalent proportion. Logarithm & Exponential Calculator Calculate common logs, natural logs, custom-base logarithms, antilogarithms, exponentials, and general powers with domain checks. Pythagorean Theorem Calculator Find the missing side of a right triangle from the other two sides and check whether the hypotenuse is valid. Profit Margin Calculator Calculate gross profit, profit margin on revenue, markup on cost, and break-even relationship from cost and selling price. 2×2 Matrix Calculator Calculate determinant, trace, inverse, eigenvalues, and basic classification for a 2×2 matrix. Factorial, Permutation & Combination Calculator Calculate n factorial, ordered arrangements nPr, and unordered selections nCr for whole-number inputs.
Practical tool guide

Using Fraction Calculator effectively

Add, subtract, multiply, or divide two fractions and receive a simplified fraction, decimal value, and mixed-number form. This page is designed to help you calculate a result with a clear browser-based workflow rather than making you install a separate utility for a small task.

How to use it

Enter the known values, select the right unit or formula option, calculate the result, and confirm that the inputs use consistent units.

Best used for
  • quick study calculations
  • everyday numeric checks
  • comparing values and units
What to verify

Double-check units, decimal precision and the values you enter, especially when the result will be used for finance, engineering or other high-impact decisions. Rounding and user-entered values can affect the result. For professional or safety-critical work, verify calculations independently.

Expected: A numerical result based on the values, formula and units selected in the tool. Avoid: Mixing units, percentage points and percentages, or relying on rounded inputs for a high-impact calculation.

Why this workflow matters

A calculator is only as reliable as the values and units entered into it. Use Fraction Calculator to speed up routine arithmetic or formula work, then do a quick reasonableness check on the magnitude and sign of the answer. When a calculation affects money, measurements, engineering or another high-impact decision, verify the formula and inputs independently rather than relying on a single automated result.

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