Enter the scanning frequency and the number of horizontal lines into the Refresh Rate Calculator. The calculator will evaluate the Refresh Rate.

## Refresh Rate Formula

The following two example problems outline the steps and information needed to calculate the Refresh Rate.

**RFR = HF / (HL * 1.05)**

- Where RFR is the Refresh Rate (hz)
- HF is the scanning frequency
- HL is the number of horizontal lines

## How to Calculate Refresh Rate?

The following example problems outline how to calculate Refresh Rate.

Example Problem #1:

- First, determine the scanning frequency.
- The scanning frequency is given as: 96,000.

- Next, determine the number of horizontal lines.
- The number of horizontal lines is provided as: 1024.

- Finally, calculate the Refresh Rate using the equation above:

RFR = HF / (HL * 1.05)

The values provided above are inserted into the equation below and computed.

RFR = 96,000 / (1024 * 1.05) = 89.285 (hz)

Example Problem #2:** **

For this problem, the variables required are provided below:

scanning frequency = 80,000

number of horizontal lines = 1000

Test your knowledge using the equation and check your answer with the calculator..

RFR = HF / (HL * 1.05)** = ?**