Network Latency Calculator
Estimate theoretical minimum latency based on distance and transmission medium.
Theoretical Minimum RTT50.00 msOne-way: 25.00 ms
Fiber optic
~0.67c (refractive index 1.5)
This is the theoretical minimum. Real latency adds routing hops, processing delays, queuing, etc.
New York → London55.70 ms RTT
LA → Tokyo88.00 ms RTT
NYC → Sydney160.00 ms RTT
Across a datacenter0.00 ms RTT