Hong Kong to Sydney ping and RTT: 145.9 ms, 2.76 ms jitter, 71.97 ms fiber floor, and 49.3% efficiency across AS203314. Updated 2026-08-09.

🇭🇰 This page compares the published ping and round-trip time (RTT) from Hong Kong (HKG) to 🇦🇺 Sydney (SYD) with vacuum and optical-fiber physical limits.

As of August 9, 2026, the Hong Kong → Sydney route on Hats Network averages 145.9 ms RTT across a 50-sample daily ICMP echo measurement round (source: GSL), 2.03× the theoretical fiber-floor limit of 71.97 ms.

Among the 19 measured routes departing Hong Kong, this route ranks 8th fastest by average RTT.

With a stdev-to-average ratio of 2.3%, this route is more stable than the network median of 3.4%. Across the round, per-probe RTT ranged from 141.68 ms to 156.78 ms with a standard deviation of 3.37 ms.

Latency Summary

Metric	Value
RTT	145.9 ms
Jitter	2.76 ms
Packet Loss	0%
Standard Fiber Floor	71.97 ms
Fiber Efficiency	49.3%
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: HKG → SYD

50 ICMP echo samples at 100 ms intervals · round 2026-08-09 · avg 145.9 ± 0.48 ms (SE)

Sample distribution: box = interquartile range (143.3–147.6 ms), median 145.2 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 (72.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	144.73
2	100	142.57
3	200	145.25
4	300	146.42
5	400	144.05
6	500	152.54
7	600	152.21
8	700	150.23
9	800	146.40
10	900	147.72
11	1000	145.25
12	1100	144.32
13	1200	142.82
14	1300	141.92
15	1400	142.10
16	1500	142.93
17	1600	143.22
18	1700	145.36
19	1800	145.60
20	1900	143.65
21	2000	152.26
22	2100	149.50
23	2200	147.64
24	2300	153.55
25	2400	149.17
26	2500	148.63
27	2600	145.37
28	2700	143.45
29	2800	142.04
30	2900	141.68
31	3000	145.19
32	3100	143.14
33	3200	148.22
34	3300	144.77
35	3400	147.42
36	3500	144.86
37	3600	142.65
38	3700	141.83
39	3800	146.52
40	3900	143.89
41	4000	156.78
42	4100	146.84
43	4200	147.19
44	4300	144.49
45	4400	142.65
46	4500	141.97
47	4600	148.47
48	4700	146.64
49	4800	144.43
50	4900	144.47

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 Hong Kong (22.27832, 114.17469) and Sydney (-33.86785, 151.20732). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	7,349.1 km
Vacuum RTT floor	49.03 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	71.97 ms
Low-latency fiber material floor	71.68 ms
Engineering floor (5% path allowance)	75.58 ms
Research 1.33× mapped-fiber reference	95.72 ms
Estimated unamplified path loss	1543.3 dB
Transparent optical spans / inline amplifiers	97 / 96
Published RTT inflation over fiber floor	2.03×

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 (2026-08-09) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	141.68 ms
Average RTT	145.9 ms
Maximum RTT	156.78 ms
Standard deviation	3.37 ms
Stdev / average	2.3%

RTT trend

Estimated route stability across the selected time window.

Average: 145.9 ms
Minimum: 144.9 ms
Maximum: 147.2 ms
Average loss: 0.02%

Route Context

Departure PoP: Hong Kong (HKG)
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 Hong Kong latency and RTT — 146.2 ms

Fastest routes departing Hong Kong (HKG)

Hong Kong to Taipei latency and RTT — 14.8 ms
Hong Kong to Singapore latency and RTT — 31.6 ms
Hong Kong to Tokyo latency and RTT — 44.9 ms
Hong Kong to Moscow latency and RTT — 119.5 ms
Hong Kong to Melbourne latency and RTT — 126.8 ms

Fastest routes arriving at Sydney (SYD)

Melbourne to Sydney latency and RTT — 9.8 ms
Singapore to Sydney latency and RTT — 94.3 ms
Tokyo to Sydney latency and RTT — 102 ms
Taipei to Sydney latency and RTT — 132.3 ms
Los Angeles to Sydney latency and RTT — 137.3 ms

Same corridor (Asia Pacific → Asia Pacific)

Sydney to Melbourne latency and RTT — 9.8 ms
Taipei to Hong Kong latency and RTT — 14.7 ms
Singapore to Hong Kong latency and RTT — 31.1 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/hkg-syd.pings.{csv,json,yaml}. When citing, include the route, the measurement round date, and the dataset version — for example: "Hats Network latency dataset, Hong Kong → Sydney round 2026-08-09, CC BY 4.0".

Data auto-generated on August 9, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Hong Kong to Sydney Latency, Ping & RTT | AS203314