Tokyo, Japan → Singapore RTT

🇯🇵 Tokyo, Japan (TYO) → 🇸🇬 Singapore (SIN)

Measurement round: 2026-08-15T04:03:13Z.

Tokyo to Singapore averaged 69.6 ms in round 2026-08-15T04:03:13Z, or about 1.34x the 52 ms fiber-floor estimate for a 5,310 km great-circle route, reaching 74.7% of the glass-limited pace. The 50 ICMP echo probes stayed within a 67.14–75.48 ms envelope, with 2.21 ms standard deviation, 2.03 ms jitter, and zero packet loss.

Across the 19 routes measured from Tokyo in this round, this path ranked third by average latency. Its observed variability of about 3.18% of the mean sits essentially at the 3.08% median across the same route set, so the connection is as steady as it is fast.

Tokyo is a major East Asia exchange hub, while Singapore anchors Southeast Asia's submarine cable interconnection, and the overhead over the fiber floor is modest. The combination of sub-70 ms RTT, a tight spread, and no loss makes this a useful reference for Japan–Singapore transport latency.

Latency Summary

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.

Sample distribution: box = interquartile range (67.9–70.8 ms), median 68.7 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 (52.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	68.16
2	100	74.05
3	200	70.22
4	300	68.30
5	400	67.49
6	500	68.49
7	600	74.67
8	700	69.90
9	800	72.99
10	900	73.00
11	1000	72.16
12	1100	68.71
13	1200	70.77
14	1300	68.33
15	1400	68.28
16	1500	67.43
17	1600	67.95
18	1700	68.77
19	1800	67.53
20	1900	69.06
21	2000	67.66
22	2100	67.54
23	2200	67.47
24	2300	70.69
25	2400	68.90
26	2500	74.34
27	2600	71.75
28	2700	68.64
29	2800	67.64
30	2900	71.06
31	3000	69.41
32	3100	69.38
33	3200	68.66
34	3300	67.86
35	3400	67.69
36	3500	75.48
37	3600	71.46
38	3700	68.94
39	3800	67.64
40	3900	72.16
41	4000	73.50
42	4100	69.82
43	4200	67.97
44	4300	67.93
45	4400	70.43
46	4500	68.86
47	4600	68.23
48	4700	67.84
49	4800	67.65
50	4900	67.14

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.

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Tokyo (35.68950, 139.69171) and Singapore (1.28967, 103.85007). It does not disclose either facility address.

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 (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Route Context

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

Related City-Pair Routes

Reverse direction

• Singapore to Tokyo latency and RTT — 69.6 ms

Fastest routes departing Tokyo (TYO)

• Tokyo to Taipei latency and RTT — 32.1 ms
• Tokyo to Hong Kong latency and RTT — 45.6 ms
• Tokyo to Seattle latency and RTT — 84.6 ms
• Tokyo to Los Angeles latency and RTT — 101.5 ms
• Tokyo to Sydney latency and RTT — 101.6 ms

Fastest routes arriving at Singapore (SIN)

• Hong Kong to Singapore latency and RTT — 31.2 ms
• Taipei to Singapore latency and RTT — 44.2 ms
• Melbourne to Singapore latency and RTT — 88.3 ms
• Sydney to Singapore latency and RTT — 94.7 ms
• Marseille to Singapore latency and RTT — 138.5 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 — 15.2 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/tyo-sin.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Tokyo → Singapore round 2026-08-15T04:03:13Z, CC BY 4.0".

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Data auto-generated on August 15, 2026. Explore the full interactive latency matrix or browse more city-pair routes.