Measured ICMP round-trip time between Taipei, Taiwan and Tokyo, Japan: 31.9 ms average latency, 0% packet loss, 1.06 ms jitter across 50 samples.

🇹🇼 Taipei, Taiwan (TPE) → 🇯🇵 Tokyo, Japan (TYO)

Measurement round: 2026-08-16T04:07:28Z.

The Taipei–Tokyo ICMP echo run from round 2026-08-16T04:07:28Z returned a 31.9 ms average RTT, with a minimum of 30.57 ms, a maximum of 35.67 ms, and 1.06 ms jitter over 50 samples. No packets were lost, and the measured latency tier was Excellent.

Across the 19 outbound routes in this round, Taipei–Tokyo ranked second by average latency. The route's standard deviation was 1.12 ms, or 3.51% of the mean, slightly above the 3.28% median variability for the measured outbound set; it is very fast, with a bit more packet-level spread than its speed rank might suggest.

At 2,101.2 km, the observed mean is 1.55 times the 20.58 ms fiber-floor estimate, giving a 64.5% fiber efficiency. The result aligns with Tokyo's role as East Asia's premier exchange hub and makes this short intra-Asia hop one of the strongest round-trip profiles in the round.

Latency Summary

Metric	Value
RTT	31.9 ms
Jitter	1.06 ms
Packet Loss	0%
Standard Fiber Floor	20.58 ms
Fiber Efficiency	64.5%
Latency Tier	Excellent
Source Region	Asia Pacific
Destination Region	Asia Pacific

Ping Measurement Series

The chart below renders the 50-sample ICMP echo measurement round for this route; an accessible table of every sample is included with the chart.

Ping series: TPE → TYO

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 31.9 ± 0.16 ms (SE)

Sample distribution: box = interquartile range (31.2–32.2 ms), median 31.6 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly — the band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (20.6 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	31.17
2	100	32.19
3	200	32.05
4	300	31.82
5	400	31.40
6	500	31.31
7	600	31.81
8	700	34.73
9	800	32.38
10	900	33.15
11	1000	32.48
12	1100	31.33
13	1200	30.99
14	1300	32.51
15	1400	32.76
16	1500	31.21
17	1600	32.02
18	1700	31.64
19	1800	30.92
20	1900	30.65
21	2000	35.36
22	2100	32.61
23	2200	31.63
24	2300	31.40
25	2400	30.69
26	2500	32.20
27	2600	31.24
28	2700	31.91
29	2800	31.05
30	2900	30.57
31	3000	30.57
32	3100	31.35
33	3200	32.23
34	3300	31.85
35	3400	30.88
36	3500	31.62
37	3600	33.92
38	3700	31.89
39	3800	31.01
40	3900	30.88
41	4000	30.82
42	4100	32.37
43	4200	31.66
44	4300	35.67
45	4400	33.34
46	4500	31.88
47	4600	31.09
48	4700	31.43
49	4800	32.20
50	4900	31.16

Download This Route's Data

This route's measurement round is published as open data (CC BY 4.0) in CSV, JSON, and YAML. See About This Measurement for citation guidance.

Download this dataset

Per-route ICMP ping series, released under CC BY 4.0. Uncompressed plain text — no decompression step needed.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Taipei (25.05306, 121.52639) and Tokyo (35.68950, 139.69171). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	2,101.2 km
Vacuum RTT floor	14.02 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	20.58 ms
Low-latency fiber material floor	20.49 ms
Engineering floor (5% path allowance)	21.61 ms
Research 1.33× mapped-fiber reference	27.37 ms
Estimated unamplified path loss	441.3 dB
Transparent optical spans / inline amplifiers	28 / 27
Published RTT inflation over fiber floor	1.55×

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 current measurement round (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	30.57 ms
Average RTT	31.9 ms
Maximum RTT	35.67 ms
Standard deviation	1.12 ms
Stdev / average	3.5%

RTT trend

Estimated route stability across the selected time window.

Average: 31.9 ms
Minimum: 31.6 ms
Maximum: 32.2 ms
Average loss: 0.02%

Route Context

Departure PoP: Taipei (TPE)
Destination PoP: Tokyo (TYO)
Region overview: Asia Pacific → Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Tokyo to Taipei latency and RTT — 32.3 ms

Fastest routes departing Taipei (TPE)

Taipei to Hong Kong latency and RTT — 15.5 ms
Taipei to Singapore latency and RTT — 44.3 ms
Taipei to Seattle latency and RTT — 115.8 ms
Taipei to Los Angeles latency and RTT — 132 ms
Taipei to Moscow latency and RTT — 132.7 ms

Fastest routes arriving at Tokyo (TYO)

Hong Kong to Tokyo latency and RTT — 44.9 ms
Singapore to Tokyo latency and RTT — 68.9 ms
Seattle to Tokyo latency and RTT — 85 ms
Los Angeles to Tokyo latency and RTT — 101.2 ms
Sydney to Tokyo latency and RTT — 101.3 ms

Same corridor (Asia Pacific → Asia Pacific)

Melbourne to Sydney latency and RTT — 9.8 ms
Sydney to Melbourne latency and RTT — 9.8 ms
Hong Kong to Taipei latency and RTT — 14.7 ms

About This Measurement

Published RTT reflects best-case backbone path behavior measured with ICMP echo probes between PoPs. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. None of these values is an SLA.

The measurement round behind this page is published as open data under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/tpe-tyo.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Taipei → Tokyo round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Taipei, Taiwan → Tokyo, Japan RTT