Fraction Calculator: Add, Subtract, Multiply & Divide Fractions | Free
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Fraction to Decimal
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Decimal to Fraction
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Fraction Calculator Tips
All 4 Operations
Add, subtract, multiply, and divide any two fractions with automatic simplification of the result.
Auto-Simplification
Results are automatically reduced to the simplest form using GCD calculation.
Fraction ↔ Decimal
Convert fractions to decimals (3/4 = 0.75) and decimals to fractions (0.75 = 3/4).
Free & Instant
No signup, works in your browser.
Frequently Asked Questions
Does it simplify fractions?
Yes, all results are automatically simplified to the lowest terms.
Is this calculator free?
Yes, completely free.
Does this fraction calculator show the intermediate steps for simplification?
Our Free Fraction Calculator is designed for speed and accuracy, instantly simplifying all fraction results to their lowest terms without displaying intermediate steps. This approach ensures you get the final, simplified answer efficiently, perfect for quick checks or solving problems where the calculation process details aren't explicitly required. It focuses on providing the direct solution.
How do I input or calculate mixed numbers like 2 1/2 using this fraction calculator?
Our Free Fraction Calculator is designed to handle all types of fractions, including mixed numbers. To calculate with a mixed number like 2 1/2, first convert it to an improper fraction (5/2). Then, simply enter this improper fraction into the calculator's input fields. The tool will accurately perform your desired operation (add, subtract, multiply, or divide) and provide the simplified result, converting it back to a mixed number if applicable, or showing its decimal equivalent.
What happens if I input a fraction that's already simplified, like 1/2?
The calculator just treats it as is. If you input 1/2 and perform an operation, say multiplying by 2/3, the calculator will process it correctly. You'll get 2/6, which then automatically simplifies to 1/3. It doesn't add extra steps for already simple fractions.
Can I multiply more than two fractions at once?
No, this calculator processes one operation at a time between two fractions. If you need to multiply three fractions, run the calculation twice. For example, multiply 1/2 by 3/4 first, then take that result and multiply it by 5/6. The auto-simplification after each step keeps your intermediate numbers manageable.
Why does my fraction result look different than what I expected?
Most often, it's because you're seeing the simplified version. 1/4 plus 1/4 gives you 2/4, but the calculator shows 1/2. That's correct. Another reason could be order of operations. This tool doesn't support parentheses, so a complex input like 1/2 + 1/3 x 2 is processed left to right. For tricky results, try breaking your calculation into smaller two-fraction steps.
Can I subtract a fraction from a whole number like 5 minus 3/8?
Yes, just enter 5 as 5/1 in the first field and 3/8 in the second. The calculator handles it automatically. 5 minus 3/8 gives you 37/8, which simplifies to 4 and 5/8. This trick works for multiplying a whole number by a fraction too. On mobile, the input fields are smaller—tap carefully to avoid typing into the wrong box.
Why does my fraction result sometimes show a decimal instead of a fraction?
That happens when the result is an irrational number or when you're using the conversion mode. For example, 1/3 divided by 2/5 equals 5/6 as a neat fraction. But try 1/7 plus 1/9, and the calculator may display the decimal (0.2539...) because the repeating decimal is too long to show as a clean fraction. You can toggle back to fraction view using the mode switch. Always check which output format is selected.
Can I use the fraction calculator for home renovation measurements?
Absolutely. If you're measuring drywall or lumber, fractions like 3/8 inch are common. Add 2 3/4 plus 1 5/16 by typing 2/1 + 3/4 first, then adding the result to 1/1 + 5/16. The auto‑simplification keeps your totals in usable form. For decimal output, flip the mode switch to see 4.0625 inches. One tip: always convert mixed numbers to improper fractions before entering.
How to Use the Fraction Calculator
- Enter numerator and denominator for both fractions
- Select operation: +, −, ×, or ÷
- Click Calculate for the simplified result
- Use the converters for fraction ↔ decimal