Enter the position of router A, the position of router B, and the propagation speed in to the propagation delay calculator below. The result is a measure of delay in ms between to routers. Often used when looking at the delay in WIFI, this can tell you if there’s a significant delay in your internet for purposes like gaming.

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## Propagation Delay Formula

The formula used by the propagation delay calculator above is as follows:

PD = (B – A) / S

- Where PD is propagation delay in s
- B is the position of router B (m)
- A is the position of router A (m)
- S is the propagation speed (this is often close to the speed of light which is close to 299,000,000 m/s but it depends on the medium of travel.

## Propagation Delay Definition

A propagation delay is defined as the delay in a broadcasted signal due to the distance between two difference routers or receivers.

## How to calculate propagation delay?

How to calculate propagation delay?

**First, determine the position of router A from the receiver.**Measure the distance from the 1st router to the computer or receiver.

**Next, determine the position of router B.**Measure the distance from the 2nd router to the receiver.

**Next, measure the propagation speed.**This should be either the speed of light or near the speed of light = 299,000,000 m/s.

**Finally, calculate the propagation delay.**Using the formula above, calculate the propagation delay. \

## FAQ

**What is a propagation delay?**

A propagation delay is defined as the delay in a broadcasted signal due to the distance between two difference routers or receivers.

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