Fraction Calculator
Perform arithmetic operations on fractions with simplification to lowest terms. Convert between fractions, decimals, and percentages.
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About Fraction Calculator
Perform Fraction Arithmetic with Confidence
Fractions are one of those mathematical concepts that people either love or dread. Adding, subtracting, multiplying, and dividing fractions by hand requires finding common denominators, cross-multiplying, simplifying results, and keeping track of negative signs - all steps where a small mistake early on cascades into a completely wrong answer. The Fraction Calculator takes the pain out of fraction arithmetic by performing all four operations instantly, always returning results in their simplest form.
All Four Operations, Fully Simplified
Enter two fractions and select the operation you want: addition, subtraction, multiplication, or division. The calculator accepts proper fractions, improper fractions, and mixed numbers. It computes the result, reduces it to lowest terms using the greatest common divisor, and displays both the simplified fraction and its decimal equivalent.
For example, adding 3/8 + 5/12 requires finding the least common denominator of 24, converting to 9/24 + 10/24, and arriving at 19/24. The Fraction Calculator does this in a blink, but more importantly, it shows the simplified result so you can verify your own work or quickly get the answer you need for a homework problem, recipe adjustment, or measurement conversion.
Mixed Numbers and Improper Fractions
Real-world fraction problems often involve mixed numbers - quantities like 2 and 3/4 or 1 and 1/2. The calculator handles these seamlessly. Enter a mixed number, and the tool converts it to an improper fraction internally, performs the calculation, and returns the result as both a simplified improper fraction and a mixed number where appropriate.
This is particularly useful in practical contexts. If a recipe calls for 2 and 1/3 cups of flour and you want to make one and a half batches, you need to multiply 2 and 1/3 by 3/2. Doing that by hand means converting to 7/3, multiplying by 3/2, getting 21/6, and simplifying to 3 and 1/2. The calculator does all of this in one step.
Who Needs a Fraction Calculator?
Students use it to check homework answers and build understanding of how fraction operations work. When you can verify each step against the calculator, learning accelerates because mistakes are caught immediately rather than reinforced through practice.
Teachers use it to quickly generate correct answers for worksheets and exams. Creating a fraction worksheet with 30 problems means solving 30 fraction problems yourself unless you have a reliable tool to verify answers.
Home cooks and bakers use it when scaling recipes up or down. Halving a recipe that calls for 3/4 cup of sugar means computing 3/4 divided by 2, which equals 3/8 - straightforward with the calculator, annoying without it.
Carpenters, builders, and DIY enthusiasts work in fractions constantly. Measurements in inches often come in fractions - cutting a board that is 15 and 3/4 inches to remove 2 and 7/8 inches requires fraction subtraction that is easy to botch when you are standing at a workbench with a pencil behind your ear.
Step-by-Step Transparency
The Fraction Calculator does not just give you the final answer. It walks through the key steps of the calculation, showing the common denominator used, the intermediate result before simplification, and the GCD applied. This transparency makes it a learning tool, not just an answer machine.
Fast, Free, and Private
Everything runs in your browser. No data is transmitted, no account is needed, and results appear instantly. Whether you are studying for a maths exam, adjusting a recipe, or measuring lumber, the Fraction Calculator gives you accurate, simplified results every time. Stop struggling with common denominators and let the tool handle the tedious arithmetic.