# Propagation Delay Calculator

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Unit Converter

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.

## 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?

1. First, determine the position of router A from the receiver.

Measure the distance from the 1st router to the computer or receiver.

2. Next, determine the position of router B.

Measure the distance from the 2nd router to the receiver.

3. Next, measure the propagation speed.

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

4. 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.