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Berlin to Tokyo Latency, Ping & RTT | AS203314

Berlin to Tokyo ping and RTT: 190.1 ms, 1.73 ms jitter, 87.53 ms fiber floor, and 46% efficiency across AS203314. Updated 2026-07-19.

πŸ‡©πŸ‡ͺ This page compares the published ping and round-trip time (RTT) from Berlin (BER) to πŸ‡―πŸ‡΅ Tokyo (TYO) with vacuum and optical-fiber physical limits.

Latency Summary

MetricValue
RTT190.1 ms
Jitter1.73 ms
Packet Loss0%
Standard Fiber Floor87.53 ms
Fiber Efficiency46%
Latency TierFair
Source RegionEurope
Destination RegionAsia Pacific

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Berlin (52.52437, 13.41053) and Tokyo (35.68950, 139.69171). It does not disclose either facility address.

Physical ReferenceValue
WGS-84 geodesic distance8,937.7 km
Vacuum RTT floor59.63 ms
Standard fiber RTT floor (ng=1.4679n_g=1.4679)87.53 ms
Low-latency fiber material floor87.17 ms
Engineering floor (5% path allowance)91.91 ms
Research 1.33Γ— mapped-fiber reference116.41 ms
Estimated unamplified path loss1876.9 dB
Transparent optical spans / inline amplifiers118 / 117
Published RTT inflation over fiber floor2.17Γ—

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 IndicatorValue
Minimum RTT187.7 ms
Median RTT (p50)189.9 ms
95th percentile RTT (p95)192.6 ms
Maximum RTT193.6 ms
Jitter1.73 ms
Packet loss0%

RTT trend

Estimated route stability across the selected time window.

Average
190.0 ms
Minimum
188.1 ms
Maximum
192.2 ms
Average loss
0.01%

Route Context

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.

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