Communication Latency Calculator

Signal delay from satellite altitude for LEO, MEO, and GEO.

Distance preset

Custom distance (km)

Link data rate (Mbps)

File size (MB)

Protocol overhead (%)

Tab to move between fields

One-way delay (ms)

119.37

Round-trip delay (sec)

0.24

Distance (km)35,786

One-way delay (sec)0.12

Effective throughput (Mbps)9.5

File transmit time (sec)84.21

Total transfer + RTT (sec)84.45

How to Use This Calculator

Select a distance preset (LEO, MEO, GEO, Moon, Mars) or enter a custom distance (km).
Set the communication link data rate (Mbps) and file size (MB) to transfer.
Enter protocol overhead percentage to account for TCP/IP headers and retransmissions.
Review one-way propagation delay (ms and sec), round-trip delay (sec), and effective throughput (Mbps).
Use round-trip delay to assess feasibility of real-time control — above 1 second requires autonomous operation.

Ad Placeholder