Fraction Calculator
Perform arithmetic operations on fractions. Supports addition, subtraction, multiplication and division. Results shown in simplified form.
About the Fraction Calculator
Fractions represent numerical parts of a whole, consisting of a numerator (top number) and a denominator (bottom number). Fractions provide exact mathematical precision where decimal approximations can introduce rounding discrepancies, especially with recurring values such as 1/3 or 1/7.
Fraction arithmetic follows strict rules: addition and subtraction require a common denominator (found using the least common multiple), after which numerators are added or subtracted while the denominator remains constant. Multiplication multiplies numerators together and denominators together directly. Division is performed by multiplying the first fraction by the reciprocal (the inverted value) of the second fraction.
This calculator supports proper fractions, improper fractions (where the numerator exceeds the denominator), and mixed numbers. It automatically reduces every result to its simplest irreducible form and displays equivalent decimal and percentage conversions.
To add 2/3 and 3/4, find the lowest common denominator (12). Convert 2/3 to 8/12 and 3/4 to 9/12. Adding the numerators gives 8/12 + 9/12 = 17/12, which simplifies to the mixed number 1 5/12 (or decimal 1.4167).
Tips for best results
- When multiplying fractions, look for opportunities to cross-cancel common factors between any numerator and denominator before multiplying to avoid dealing with unwieldy numbers.
- To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.
- Never add denominators together when adding fractions; only numerators with identical denominators can be combined.
How to use the Fraction Calculator
Why use Toolseza for Fraction Calculator?
Use this tool as often as you need with no paywalls, premium tiers, or hidden daily calculation quotas.
All calculations and file manipulations run inside your web browser. Your inputs are never sent to a cloud server.
Results update in real-time as you type or adjust settings, with instant one-click copy and export capabilities.
Works natively on smartphones, tablets, laptops, and desktop computers with zero installation or account creation.
Editorial Standards & Verification: All formulas, algorithms, and conversion factors implemented on Toolseza adhere to openly documented international standards (ISO, NIST, BIPM, W3C). Results are verified against benchmark reference datasets before publication.
Frequently Asked Questions
Is Fraction Calculator free to use?
Yes — Fraction Calculator is completely free, unlimited, and requires no sign-up.
What is an improper fraction?
An improper fraction has a numerator larger than its denominator, such as 7/4. It can be converted to a mixed number: 1¾.
Are the calculations accurate?
Yes — it uses the standard, widely accepted formula, so results are accurate and reliable.
Does it work on mobile and tablet?
Yes — Fraction Calculator works on any modern browser, including mobile and tablet, no app required.