Percentage Calculator
Find a percentage of a number, including the result after adding or subtracting it.
Math
Math
Fraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
Enter your values
Your result
Simplified fraction
5 / 6
- Decimal value
- 0.833333
- Numerator
- 5
- Denominator
- 6
An estimate based on your inputs. Review the assumptions and method below.
How does this calculator work?
Fractions represent exact parts of a number. The result is reduced to its simplest form by dividing the numerator and denominator by their greatest common divisor.
The formula
a/b + c/d = (ad + bc)/bd; multiplication = ac/bd; division = ad/bc.
What should you know?
- A denominator cannot be zero, and you cannot divide by a fraction with a zero numerator.
- Integer inputs from −1000000 to 1000000 are accepted to preserve arithmetic precision.
Common questions
How is a fraction simplified?
Divide the numerator and denominator by the largest integer that divides both exactly. For example, 6/8 becomes 3/4.
Can I enter a negative fraction?
Yes. Put the minus sign in the numerator or denominator. The result is displayed with a positive denominator.
Sources and verification
How do we choose formulas and check results?
Sources explain the method or its limits; they do not imply that the linked organizations endorse this calculator.