Simplify Fractions Calculator

Instantly reduce any fraction to its lowest terms using the Greatest Common Divisor (GCD). Get the simplified fraction, optional mixed number form, a decimal approximation, and clear step‑by‑step work. Everything runs locally in your browser — no signup, no tracking.

⚡Fast GCD simplification

🧾Step-by-step reduction

🔁Mixed number + decimal

📤Copy & share results

Enter a fraction

Type the numerator and denominator (like 42 / 56). We’ll reduce it to simplest form. Supports negative numbers, and automatically normalizes the sign.

Numerator *

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Denominator *

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Display format

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Your simplified fraction will appear here

Enter a numerator and denominator, then press “Simplify”.

Tip: If you type an improper fraction (like 17/5), we can show a mixed number (3 2/5).

This calculator is for educational and everyday use (schoolwork, cooking, budgeting). Always follow your teacher’s formatting rules if you’re submitting an assignment.

🧠What “simplify” means

Lowest terms, explained

A fraction is in lowest terms when the numerator and denominator have no common factor greater than 1.

We find the GCD of numerator and denominator.
Divide both by the GCD.
Normalize the sign (denominator stays positive).

Quick check: if both numbers are even, it’s not simplified yet.

🎓School-friendly output

Also shows mixed numbers

If the simplified fraction is improper, we can display it as a mixed number: 17/5 → 3 2/5.

Whole part = integer division.
Remainder becomes the new numerator.
Denominator stays the same (already simplified).

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