Math / CALCULATOR

One-Link Transmission Delay

One-Link Transmission Delay: explore an explicit model with input checks, a formula and a worked example.

Runs on your deviceUpdates as you typeFormula & example ↓
01

Your inputs

Adjust the values to explore a different result.

km
Enter path length in km.
km/s
Enter propagation speed in km/s.
bytes
Enter packet size in bytes.
Mb/s
Enter link rate in Mb/s.

Formula

one-way delay=distance/speed + packet bits/link bits per second.
  • Use the units shown beside each field.
  • Results update automatically whenever you change an input.
  • Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
  • Single link only. Queueing, processing, multiple hops and application handshakes are excluded.

Example Calculation

Example inputs
  • Path length: 100 km
  • Propagation speed: 200000 km/s
  • Packet size: 1500 bytes
  • Link rate: 100 Mb/s

100 km at 200,000 km/s adds 0.5 ms; a 1500-byte packet at 100 Mb/s adds 0.12 ms.

Frequently asked questions

How do I use this calculator?

Enter path length, propagation speed, packet size, link rate. The result updates automatically. Use Reset to restore the example values.

What method does it use?

one-way delay=distance/speed + packet bits/link bits per second.. Single link only. Queueing, processing, multiple hops and application handshakes are excluded.

Why might a rounded result differ?

The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.

Are my inputs saved online?

No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.

Check the assumptions and units before using this result. Read about calculation methods.