When to use this
- You need exact arithmetic, fractions, roots, powers, trigonometry, or a school-style formula.
- You need to keep the expression visible while checking the final value.
Fraction Calculator
Fraction Calculator
Calculate fraction addition, subtraction, multiplication, and division with simplified fraction and decimal results side by side. It fits tasks such as recipe scaling, inch-based measurements, and quick fraction checks.
Use the full fraction calculator for operations, or focused pages for conversions.
Fraction input
Simplified fractionโ
Enter valid fractions with non-zero denominators.
Try common inputs
Formula / focus
Check recipe fractions, measurement fractions, and school-style fraction work with simplified output and decimal values side by side.
Fraction operations Reduction Decimal output Recipe and measurement examples
Decision Check Before Calculating
How it differs from nearby calculators
Math calculators preserve formula meaning. Use conversion pages for units and daily calculators for simple totals or estimates.
Common input mistakes
- Mixing DEG and RAD angle modes.
- Reading a decimal approximation as an exact fraction.
- Skipping parentheses around a numerator, denominator, or function argument.
How to read the result
- Check whether the result is exact, decimal, or approximate.
- For trig and powers, confirm the mode and parentheses before trusting the value.
Next action
- Use examples to test the same expression shape.
- Open the symbol guide if the blocker is entering โ, ฯ, ยฐ, or other symbols.
Related calculators
Examples, usage, and FAQ
Use this section before calculating to confirm whether this is the right calculator, how to enter the values, and what a result can and cannot tell you.
Overview
Use this calculator when a task needs exact fraction work, such as recipe adjustments, measurement checks, or school-style fraction verification.
Each result is shown as both a simplified fraction and a decimal so you can decide whether the exact form or the decimal form is the better fit.
How To Use It
- Enter the two fractions.
- Choose the operation.
- Read both the simplified fraction and decimal outputs, then keep the version your task needs.
FAQ
Q. Does it simplify the result?
Yes. Results are reduced using the greatest common divisor.
Q. Can I use it for measurement checks in decimal form?
Yes. The calculator keeps the decimal output visible, which helps when a fraction such as 7/16 inch also needs a decimal check.
Q. What if I only need conversion, not operations?
Use fraction-to-decimal for the forward conversion, decimal-to-fraction for the reverse direction, or mixed number when the input includes a whole number and fraction.
Example Inputs
3/4 + 2/5
3/4 + 2/5
Useful when two recipe amounts need to be added together.
7/8 รท 1/4
7/8 รท 1/4
Helpful for checking how many quarter-cup portions fit into a larger amount.
5/6 ร 9/10
5/6 ร 9/10
A practical ratio-adjustment example for reducing an ingredient amount.
Read the calculator guide
See when to switch calculators, what the scientific calculator does well, and how symbol input works before the next calculation blocks on setup.
Order of operations basics
A beginner guide to order of operations covering 2 + 3 ร 4, why it becomes 14 instead of 20, and how parentheses remove guesswork.
Common percentage mistakes for beginners
A beginner guide to percentage mistakes, including the difference between 10% off and a 10% markup, plus confusion around base value, rate, and percent-of questions.
Choose the right calculator
A practical guide to choosing between the basic calculator, scientific calculator, percentage tools, fractions, unit conversion, date difference, working hours, and age-on-date tools.
When scientific calculators help most
See when a scientific calculator is the right choice, what kinds of expressions it handles well, and how it differs from a basic calculator.
Math symbol input basics
Learn which math symbols are available directly in the site and which ones you may need to find through your OS or IME.