Hong Kong to Tokyo Latency, Ping & RTT | AS203314
Hong Kong to Tokyo ping and RTT: 46.1 ms, 0.52 ms jitter, 28.24 ms fiber floor, and 61.3% efficiency across AS203314. Updated 2026-07-19.
🇭🇰 This page compares the published ping and round-trip time (RTT) from Hong Kong (HKG) to 🇯🇵 Tokyo (TYO) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 46.1 ms |
| Jitter | 0.52 ms |
| Packet Loss | 0% |
| Standard Fiber Floor | 28.24 ms |
| Fiber Efficiency | 61.3% |
| Latency Tier | Excellent |
| Source Region | Asia Pacific |
| Destination Region | Asia Pacific |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for Hong Kong (22.27832, 114.17469) and Tokyo (35.68950, 139.69171). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 2,883.5 km |
| Vacuum RTT floor | 19.24 ms |
| Standard fiber RTT floor () | 28.24 ms |
| Low-latency fiber material floor | 28.12 ms |
| Engineering floor (5% path allowance) | 29.65 ms |
| Research 1.33× mapped-fiber reference | 37.56 ms |
| Estimated unamplified path loss | 605.5 dB |
| Transparent optical spans / inline amplifiers | 38 / 37 |
| Published RTT inflation over fiber floor | 1.63× |
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 | 45.6 ms |
| Median RTT (p50) | 46 ms |
| 95th percentile RTT (p95) | 47 ms |
| Maximum RTT | 47.3 ms |
| Jitter | 0.52 ms |
| Packet loss | 0% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 46.1 ms
- Minimum
- 45.6 ms
- Maximum
- 46.6 ms
- Average loss
- 0.03%
Route Context
- Departure PoP: Hong Kong (HKG)
- Destination PoP: Tokyo (TYO)
- Region overview: Asia Pacific → Asia Pacific
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Tokyo to Hong Kong latency and RTT — 45.2 ms
- Hong Kong to Taipei latency and RTT — 14.8 ms
- Hong Kong to Singapore latency and RTT — 30.9 ms
- Hong Kong to Moscow latency and RTT — 119.6 ms
- Hong Kong to Sydney latency and RTT — 126.6 ms
- Hong Kong to Melbourne latency and RTT — 127.6 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.