Adding Fractions Calculator Online – How to Add Fractions? Just enter the values inside the box and click on the **“Calculate”** button. Also, you can enter negative fractions values. Even more, you can enter mixed fractions with space and get the final addition result.

## How to use Adding Fractions Calculator?

It is very simple to use the calculator. Follow the steps below.

- First of all, enter the simple or negative frations with slash(/).
- Example: 1/5 + 2/3
- Also, you can enter mixed fractions with space.
- Example: 3 1/5 + 2 3/8
- Finally, hit the calculate button. As a result, you will get the output.

#### Example of Adding Fractions

**1/4 + 1/5 = (1 x 4 + 1 x 5) / (4 x 5) = 9/20 = 0.45**