Fraction Calculator | Simplify, Add, Subtract & Convert

Find the least common denominator (LCD), convert each fraction to have that denominator, then add the numerators and keep the denominator. Example: 1/3 + 1/4 → LCD=12 → 4/12 + 3/12 = 7/12. Simplify the result if possible.

Write the decimal over 1 (e.g., 0.75/1), multiply both top and bottom by 10, 100, or 1000 to eliminate the decimal (75/100), then simplify by dividing by GCD (3/4). This calculator converts instantly in both directions.

Multiply numerators together and denominators together: (a/b) × (c/d) = (a×c)/(b×d). Example: 2/3 × 3/4 = 6/12 = 1/2. Always simplify the result. Cross-cancellation before multiplying can make the numbers smaller and easier to work with.

Flip the second fraction (find its reciprocal), then multiply: (a/b) ÷ (c/d) = (a/b) × (d/c). Example: 3/4 ÷ 2/5 = 3/4 × 5/2 = 15/8 = 1 7/8. Enter any fraction division in this calculator for step-by-step results.

Yes! In guest mode, you can export your calculations to JSON format. Sign in is required for PDF and CSV export. Click the export button to download your results. This is perfect for record-keeping, sharing with others, or importing into other tools.

Yes! Your calculation history is automatically saved. Guest users can save up to 50 calculations per workspace locally. Sign in for free to save up to 100 calculations per workspace, with access from any device when logged in.

Absolutely! The Fraction Calculator is completely free with no sign-up required. Create a free account to unlock additional features like more calculation history, multiple workspaces, and the ability to access your saved data from any device.