Tokyo to Melbourne Latency, Ping & RTT | AS203314
Tokyo to Melbourne ping and RTT: 111.1 ms, 1.33 ms jitter, 79.87 ms fiber floor, and 71.9% efficiency across AS203314. Updated 2026-07-19.
🇯🇵 This page compares the published ping and round-trip time (RTT) from Tokyo (TYO) to 🇦🇺 Melbourne (MEL) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 111.1 ms |
| Jitter | 1.33 ms |
| Packet Loss | 0.06% |
| Standard Fiber Floor | 79.87 ms |
| Fiber Efficiency | 71.9% |
| Latency Tier | Good |
| Source Region | Asia Pacific |
| Destination Region | Asia Pacific |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for Tokyo (35.68950, 139.69171) and Melbourne (-37.81400, 144.96332). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 8,156.1 km |
| Vacuum RTT floor | 54.41 ms |
| Standard fiber RTT floor () | 79.87 ms |
| Low-latency fiber material floor | 79.55 ms |
| Engineering floor (5% path allowance) | 83.88 ms |
| Research 1.33× mapped-fiber reference | 106.23 ms |
| Estimated unamplified path loss | 1712.8 dB |
| Transparent optical spans / inline amplifiers | 108 / 107 |
| Published RTT inflation over fiber floor | 1.39× |
Attenuation is used to estimate the number of 80 km optical spans; it does not directly slow light. See the full theoretical fiber latency, GeoNames, attenuation, and amplifier methodology.
Stability & Trend
The following estimated indicators summarize route stability for the current publication period and are intended for comparative planning rather than SLA evaluation.
| Stability Indicator | Value |
|---|---|
| Minimum RTT | 109.8 ms |
| Median RTT (p50) | 110.9 ms |
| 95th percentile RTT (p95) | 112.9 ms |
| Maximum RTT | 114.2 ms |
| Jitter | 1.33 ms |
| Packet loss | 0.06% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 111.2 ms
- Minimum
- 110.4 ms
- Maximum
- 112.0 ms
- Average loss
- 0.01%
Route Context
- Departure PoP: Tokyo (TYO)
- Destination PoP: Melbourne (MEL)
- Region overview: Asia Pacific → Asia Pacific
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Melbourne to Tokyo latency and RTT — 113.9 ms
- Tokyo to Taipei latency and RTT — 32.7 ms
- Tokyo to Hong Kong latency and RTT — 45.2 ms
- Tokyo to Singapore latency and RTT — 68.8 ms
- Tokyo to Seattle latency and RTT — 84.1 ms
- Tokyo to Los Angeles latency and RTT — 101.3 ms
About This Measurement
Published RTT reflects best-case backbone path behavior. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. Stability indicators are comparative estimates, and none of these values is an SLA.
Data auto-generated on July 19, 2026. Explore the full interactive latency matrix or browse more city-pair routes.