ICMP RTT measurements from Taipei, Taiwan to Sydney, Australia: average latency, jitter, packet loss, and physical efficiency for this Asia Pacific route.

🇹🇼 Taipei, Taiwan (TPE) → 🇦🇺 Sydney, Australia (SYD)

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

For the 2026-08-15T04:03:13Z round, Taipei to Sydney averaged 131.8 ms round-trip, with a minimum of 126.02 ms and a maximum of 148.11 ms across 50 ICMP samples. Zero packets were lost, and jitter was 4.07 ms, so the path was consistent despite the 7,237.6 km great-circle distance.

The observed average is 1.86 times the theoretical fiber-floor RTT of 70.88 ms for that distance, a 53.8% efficiency relative to the physical ideal. The loss-free, low-jitter profile suggests the remaining overhead is structural to a long regional crossing rather than a sign of an unstable path.

Within the 19-route outbound set from Taipei, this route ranks sixth by average latency. Its 4.9 ms standard deviation represents about 3.7% variation around the mean, close to the 3.08% network median, indicating steady behavior across the measurement window.

Latency Summary

Metric	Value
RTT	131.8 ms
Jitter	4.07 ms
Packet Loss	0%
Standard Fiber Floor	70.88 ms
Fiber Efficiency	53.8%
Latency Tier	Good
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 → SYD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 131.8 ± 0.69 ms (SE)

Sample distribution: box = interquartile range (128.3–133.9 ms), median 130.2 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 (70.9 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	134.02
2	100	130.17
3	200	127.71
4	300	138.77
5	400	130.27
6	500	142.95
7	600	134.09
8	700	131.00
9	800	129.17
10	900	133.60
11	1000	128.58
12	1100	126.97
13	1200	136.02
14	1300	138.98
15	1400	134.21
16	1500	132.90
17	1600	132.49
18	1700	148.11
19	1800	134.98
20	1900	130.19
21	2000	129.74
22	2100	130.03
23	2200	127.85
24	2300	128.74
25	2400	127.74
26	2500	126.93
27	2600	126.60
28	2700	126.02
29	2800	127.35
30	2900	128.38
31	3000	130.03
32	3100	142.60
33	3200	140.02
34	3300	131.09
35	3400	133.13
36	3500	133.97
37	3600	130.21
38	3700	128.68
39	3800	133.78
40	3900	128.68
41	4000	141.50
42	4100	133.60
43	4200	132.55
44	4300	129.45
45	4400	128.92
46	4500	126.93
47	4600	126.12
48	4700	128.26
49	4800	127.77
50	4900	128.15

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 Sydney (-33.86785, 151.20732). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	7,237.6 km
Vacuum RTT floor	48.28 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	70.88 ms
Low-latency fiber material floor	70.59 ms
Engineering floor (5% path allowance)	74.43 ms
Research 1.33× mapped-fiber reference	94.26 ms
Estimated unamplified path loss	1519.9 dB
Transparent optical spans / inline amplifiers	95 / 94
Published RTT inflation over fiber floor	1.86×

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:

Round Statistic	Value
Minimum RTT	126.02 ms
Average RTT	131.8 ms
Maximum RTT	148.11 ms
Standard deviation	4.9 ms
Stdev / average	3.7%

RTT trend

Estimated route stability across the selected time window.

Average: 131.7 ms
Minimum: 130.5 ms
Maximum: 133.1 ms
Average loss: 0.01%

Route Context

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

Reverse direction

Sydney to Taipei latency and RTT — 133.2 ms

Fastest routes departing Taipei (TPE)

Taipei to Hong Kong latency and RTT — 15.4 ms
Taipei to Tokyo latency and RTT — 31.6 ms
Taipei to Singapore latency and RTT — 44.2 ms
Taipei to Seattle latency and RTT — 115.7 ms
Taipei to Moscow latency and RTT — 131.7 ms

Fastest routes arriving at Sydney (SYD)

Melbourne to Sydney latency and RTT — 9.8 ms
Singapore to Sydney latency and RTT — 95.3 ms
Tokyo to Sydney latency and RTT — 101.6 ms
Hong Kong to Sydney latency and RTT — 136.3 ms
Los Angeles to Sydney latency and RTT — 139 ms

Same corridor (Asia Pacific → Asia Pacific)

Sydney to Melbourne latency and RTT — 9.8 ms
Hong Kong to Taipei latency and RTT — 15.2 ms
Singapore to Hong Kong latency and RTT — 30.9 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-syd.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Taipei → Sydney round 2026-08-15T04:03:13Z, CC BY 4.0".

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

Taipei, Taiwan → Sydney, Australia RTT