Enter the actual mass and the theoretical mass into the calculator to determine the Current Efficiency.

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## Current Efficiency Formula

The following formula is used to calculate the Current Efficiency.

**Ec = AM / TM * 100**

- Where Ec is the Current Efficiency (%)
- AM is the actual mass
- TM is the theoretical mass

## How to Calculate Current Efficiency?

The following two example problems outline how to calculate the Current Efficiency.

**Example Problem #1:**

- First, determine the actual mass. In this example, the actual mass is given as 78.
- Next, determine the theoretical mass. For this problem, the theoretical mass is given as 80.
- Finally, calculate the Current Efficiency using the equation above:

Ec = AM / TM * 100

Inserting the values from above and solving the equation:

Ec = 78 / 80 * 100 = 97.5 (%)

**Example Problem #2: **

Using the same process as above, first define the variables required by the formula. In this case, these values are:

actual mass = 90

theoretical mass = 95

Entering these values yields:

Ec = AM / TM * 100 = 94.73 (%)