Propagation Latency Calculator
Calculate one-way propagation delay using supplied path length and propagation speed.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Path distance (km) | Enter path distance in km; use the same basis as the other measurements. |
| Propagation speed (m/s) | Enter propagation speed in m/s; use the same basis as the other measurements. |
Understanding your result
Read One-way propagation delay (s), One-way propagation delay (ms) in the units and model stated on this page. The formula seconds = distance * 1000 / speed · milliseconds = seconds * 1000 defines the relationship; measurement accuracy and model applicability are separate from numerical precision.
Common mistakes
- Mixing input units or changing the physical meaning of a variable without changing the model.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
What is the minimum travel time for a signal over this distance?
Calculate one-way propagation delay using supplied path length and propagation speed.
Common uses
- What is the minimum travel time for a signal over this distance
How it works
seconds = distance * 1000 / speed; milliseconds = seconds * 1000
Worked example
Enter Path distance: 1000 km; Propagation speed: 200000000 m/s. Results: One-way propagation delay: 0.005 s; One-way propagation delay: 5 ms.