See ICMP echo round-trip time results for the Singapore-to-Sydney, Australia route: average 95.3 ms, zero packet loss, and jitter stats.

🇸🇬 Singapore (SIN) → 🇦🇺 Sydney, Australia (SYD)

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

In the 2026-08-15T04:03:13Z round, 50 ICMP echo probes from Singapore to Sydney returned an average RTT of 95.3 ms, with the fastest sample at 90.52 ms, the slowest at 108.83 ms, and no packet loss. Jitter was 3.57 ms and the standard deviation was 3.74 ms.

The geodetic distance is 6,293.5 km, and the theoretical fiber floor for that span is 61.63 ms. An average of 95.3 ms puts the route at 1.55 times that floor, or about 64.7 percent fiber efficiency, leaving roughly 34 ms of overhead for real-world cable paths and switching.

This path ranked fifth among the 19 outbound paths in the round. Its standard deviation is approximately 3.9 percent of the average, slightly above the 3.08 percent network-wide median, so the connection is loss-free and stable in absolute terms, though its relative delay variation is a bit higher than the network midpoint.

Latency Summary

Metric	Value
RTT	95.3 ms
Jitter	3.57 ms
Packet Loss	0%
Standard Fiber Floor	61.63 ms
Fiber Efficiency	64.7%
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: SIN → SYD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 95.3 ± 0.53 ms (SE)

Sample distribution: box = interquartile range (92.4–97.7 ms), median 94.3 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 (61.6 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	108.83
2	100	96.51
3	200	92.53
4	300	95.32
5	400	92.24
6	500	97.71
7	600	96.66
8	700	92.48
9	800	91.75
10	900	95.73
11	1000	93.67
12	1100	90.87
13	1200	91.34
14	1300	96.73
15	1400	102.68
16	1500	95.83
17	1600	91.58
18	1700	92.53
19	1800	91.40
20	1900	97.56
21	2000	92.13
22	2100	100.60
23	2200	99.21
24	2300	96.24
25	2400	98.20
26	2500	92.43
27	2600	97.69
28	2700	94.16
29	2800	91.30
30	2900	100.02
31	3000	97.69
32	3100	95.05
33	3200	99.53
34	3300	97.97
35	3400	97.33
36	3500	92.26
37	3600	90.74
38	3700	92.43
39	3800	92.76
40	3900	90.52
41	4000	102.96
42	4100	100.07
43	4200	93.97
44	4300	93.70
45	4400	93.43
46	4500	91.24
47	4600	93.76
48	4700	94.45
49	4800	96.20
50	4900	93.01

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 Singapore (1.28967, 103.85007) and Sydney (-33.86785, 151.20732). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	6,293.5 km
Vacuum RTT floor	41.99 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	61.63 ms
Low-latency fiber material floor	61.38 ms
Engineering floor (5% path allowance)	64.72 ms
Research 1.33× mapped-fiber reference	81.97 ms
Estimated unamplified path loss	1321.6 dB
Transparent optical spans / inline amplifiers	83 / 82
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 (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	90.52 ms
Average RTT	95.3 ms
Maximum RTT	108.83 ms
Standard deviation	3.74 ms
Stdev / average	3.9%

RTT trend

Estimated route stability across the selected time window.

Average: 95.2 ms
Minimum: 94.5 ms
Maximum: 96.2 ms
Average loss: 0.01%

Route Context

Departure PoP: Singapore (SIN)
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 Singapore latency and RTT — 94.7 ms

Fastest routes departing Singapore (SIN)

Singapore to Hong Kong latency and RTT — 30.9 ms
Singapore to Taipei latency and RTT — 44.3 ms
Singapore to Tokyo latency and RTT — 69.6 ms
Singapore to Melbourne latency and RTT — 87.8 ms
Singapore to Marseille latency and RTT — 138.8 ms

Fastest routes arriving at Sydney (SYD)

Melbourne to Sydney latency and RTT — 9.8 ms
Tokyo to Sydney latency and RTT — 101.6 ms
Taipei to Sydney latency and RTT — 131.8 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
Taipei to Hong Kong latency and RTT — 15.4 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/sin-syd.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Singapore → 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.

Singapore → Sydney, Australia RTT