Fraction Calculator
Add, subtract, multiply, divide fractions and convert to mixed numbers and decimals
Fraction 1
Fraction 2
Calculation Result
Simplified Fraction
23/20
Mixed fraction: 1 3/20Decimal Value
1.15
Numerator
23
Denominator
20
How this calculator works
1
Input numerators and denominators for both fractions.
2
Choose operation: Addition (+), Subtraction (-), Multiplication (×), or Division (÷).
3
Get simplified fraction, mixed fraction, and decimal value.
Formula & Mathematics
Fraction Arithmetic Rules
a/b + c/d = (ad + bc)/bd; a/b × c/d = ac/bd; a/b ÷ c/d = ad/bc
Results are automatically reduced to lowest terms using the Greatest Common Divisor.
Worked Example
Add 3/4 and 2/5
Find common denominator 20.
• 3/4 = 15/20; 2/5 = 8/20
• Sum = 15/20 + 8/20 = 23/20
• Mixed fraction = 1 3/20 = 1.15
Result is 23/20 (or 1 3/20).
Frequently Asked Questions
An improper fraction is one where the numerator is greater than or equal to the denominator, such as 7/4.
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