Enter the accepted shares and the rejected shares into the calculator to determine the Mining Efficiency.

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## Mining Efficiency Formula

The following formula is used to calculate the Mining Efficiency.

**Em = As / (As + Rs) * 100**

- Where Em is the Mining Efficiency (%)
- As is the accepted shares
- RS is the rejected shares

## How to Calculate Mining Efficiency?

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

**Example Problem #1:**

- First, determine the accepted shares. In this example, the accepted shares is given as 100.
- Next, determine the rejected shares. For this problem, the rejected shares is given as 30.
- Finally, calculate the Mining Efficiency using the equation above:

Em = As / (As + Rs) * 100

Inserting the values from above and solving the equation:

Em = 100 / (100 + 30) * 100 = 76.923 (%)

**Example Problem #2: **

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

accepted shares = 140

rejected shares = 20

Entering these values yields:

Em = 140 / (140 + 20) * 100 = 87.5 (%)