Packet Transmission Delay – Time to Send Packet
Calculate the time to transmit a packet onto the link from its size and link speed.
About This Calculator
Calculate the time to transmit a packet onto the link from its size and link speed. Use the calculator above for instant results.
Worked Examples
- 12,000 / 100,000 = 0.12 ms | 8,333 pps max
Answer: 0.12 ms
- 0.012 ms | 83,333 pps max
Answer: 0.012 ms
- 0.0512 ms
Answer: 0.0512 ms
Who Uses This Calculator?
Link capacity and delay calculation.
Networking course study.
Network performance analysis.
Explain delay components.
Common Mistakes to Avoid
❌ Transmission is separate from propagation
Transmission: loading bits onto wire. Propagation: traveling through wire. Total = both plus processing and queueing.
❌ Large packets = more delay
1500-byte packet takes 10× longer to transmit than a 150-byte packet on same link.
Frequently Asked Questions
4 delay components?
1. Transmission (put bits on wire). 2. Propagation (travel through medium). 3. Processing (router inspection). 4. Queueing (wait in buffer).
Jumbo frames?
Standard MTU: 1500 bytes. Jumbo frames: up to 9000 bytes. Fewer frames for large transfers but needs switch support.
Why fragmentation hurts?
Each fragment = extra headers + independent routing. PMTUD avoids fragmentation for better performance.