SanchitGurukul • Networking Tools
RTT Calculator
Calculate round-trip time from timestamps or test samples. Review average latency, minimum, maximum, jitter and packet-loss impact for lab and troubleshooting use.
Single RTT Calculation
Enter timestamps to calculate RTT.
RTT Samples Analyzer
Separate values using spaces, commas, or new lines. Use timeout or lost for packet loss.
How to Read RTT
| RTT | General Interpretation |
|---|---|
| < 20 ms | Very low latency, commonly seen on nearby LAN/datacenter paths. |
| 20–50 ms | Good latency for many interactive applications. |
| 50–100 ms | Usable, but delay may become noticeable for real-time applications. |
| 100–200 ms | Higher latency; voice, gaming and interactive sessions may be affected. |
| > 200 ms | Significant latency. Investigate distance, routing, congestion, tunnels or processing delays. |
Important: RTT is not always exactly twice the one-way delay because forward and return paths can differ. The one-way estimate shown here simply uses RTT ÷ 2.
Example Troubleshooting Flow
- Collect multiple ping or application RTT samples.
- Compare minimum, average and maximum RTT.
- Check jitter to see how much delay changes between packets.
- Review packet loss together with latency.
- Compare results from different hops, paths, VPN states or times of day.
Privacy: All calculations are performed locally in your browser. The values entered into this tool are not submitted or stored by the calculator.
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