Latency Calculator
LAT v1.0
1000 km
1km
100km
1000km
5000km
10000km
20000km
Fiber Optic
200000
340
10000
50000
100000
200000
300000
5 ms
0
10
25
50
75
100
2 ms
0
5
10
20
35
50
One-Way Latency
10.0 ms
Round-Trip Time
20.0 ms
Quality Class
Excellent
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Latency Breakdown
Propagation
Processing
Queuing
Propagation Delay
5.0 ms
Processing Delay
5.0 ms
Queuing Delay
2.0 ms
Total Latency
12.0 ms
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Latency Reference
Application
Max Latency
Impact
Voice Call
< 150 ms
Acceptable
Video Call
< 100 ms
Good
Gaming
< 50 ms
Optimal
Cloud Computing
< 30 ms
Excellent
Financial Trading
< 5 ms
Critical
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Formula
Propagation Delay = Distance / Speed
Distance in km, Speed in km/s
Total Latency = Propagation + Processing + Queuing
Round-Trip Time = 2 × Total Latency
Lower latency = better real-time performance
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Latency Guide
- 1 Enter distance between endpoints
- 2 Select transmission medium
- 3 Add processing and queuing delays
- 4 Calculate total latency and RTT