São Paulo to Tokyo Latency, Ping & RTT | AS203314
São Paulo to Tokyo ping and RTT: 231.9 ms, 1.64 ms jitter, 181.46 ms fiber floor, and 78.3% efficiency across AS203314. Updated 2026-07-19.
🇧🇷 This page compares the published ping and round-trip time (RTT) from São Paulo (GRU) to 🇯🇵 Tokyo (TYO) with vacuum and optical-fiber physical limits.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 231.9 ms |
| Jitter | 1.64 ms |
| Packet Loss | 0.14% |
| Standard Fiber Floor | 181.46 ms |
| Fiber Efficiency | 78.3% |
| Latency Tier | Fair |
| Source Region | South America |
| Destination Region | Asia Pacific |
Theoretical Fiber Latency
The public physical reference uses the GeoNames city centres for São Paulo (-23.54750, -46.63611) and Tokyo (35.68950, 139.69171). It does not disclose either facility address.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 18,530.2 km |
| Vacuum RTT floor | 123.62 ms |
| Standard fiber RTT floor () | 181.46 ms |
| Low-latency fiber material floor | 180.73 ms |
| Engineering floor (5% path allowance) | 190.56 ms |
| Research 1.33× mapped-fiber reference | 241.34 ms |
| Estimated unamplified path loss | 3891.3 dB |
| Transparent optical spans / inline amplifiers | 244 / 243 |
| Published RTT inflation over fiber floor | 1.28× |
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 | 229.7 ms |
| Median RTT (p50) | 231.7 ms |
| 95th percentile RTT (p95) | 234.6 ms |
| Maximum RTT | 234.9 ms |
| Jitter | 1.64 ms |
| Packet loss | 0.14% |
RTT trend
Estimated route stability across the selected time window.
- Average
- 231.7 ms
- Minimum
- 229.7 ms
- Maximum
- 233.8 ms
- Average loss
- 0.01%
Route Context
- Departure PoP: São Paulo (GRU)
- Destination PoP: Tokyo (TYO)
- Region overview: South America → Asia Pacific
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
- Reverse direction: Tokyo to São Paulo latency and RTT — 230 ms
- São Paulo to Miami latency and RTT — 74 ms
- São Paulo to New York latency and RTT — 122 ms
- São Paulo to Ashburn latency and RTT — 128 ms
- São Paulo to Los Angeles latency and RTT — 131.6 ms
- São Paulo to Seattle latency and RTT — 156.1 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.