ICMP RTT measurement from Melbourne, Australia to Los Angeles, USA: 147.7 ms average, 0% packet loss, 2.24 ms standard deviation, Good latency tier.

🇦🇺 Melbourne, Australia (MEL) → 🇺🇸 Los Angeles, USA (LAX)

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

The 2026-08-15T04:03:13Z ICMP echo reading from Melbourne to Los Angeles averaged 147.7 ms over 50 samples, with a range of just 145.14 ms to 156.29 ms. There was no packet loss, jitter measured 2 ms, and the Good latency tier fits this short, stable Pacific crossing.

Melbourne anchors the southern Australian backbone with paths across the Pacific and via Southeast Asia, while Los Angeles is the primary US West Coast landing point for trans-Pacific submarine cables. At 12,764 km, the route runs about 18% above the straight-line fiber floor of 125 ms, achieving roughly 85% fiber efficiency.

This route ranks 6th of 19 outbound routes from Melbourne by average RTT. Its 2.24 ms standard deviation is about 1.5% of the 147.7 ms average, below the network-wide median of 3.08%, reinforcing that the path is both fast and consistent in this sample.

Latency Summary

Metric	Value
RTT	147.7 ms
Jitter	2 ms
Packet Loss	0%
Standard Fiber Floor	125 ms
Fiber Efficiency	84.6%
Latency Tier	Good
Source Region	Asia Pacific
Destination Region	North America

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: MEL → LAX

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 147.7 ± 0.32 ms (SE)

Sample distribution: box = interquartile range (146.0–148.8 ms), median 147.1 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 (125.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	147.03
2	100	145.70
3	200	149.21
4	300	154.54
5	400	149.82
6	500	149.69
7	600	150.03
8	700	146.70
9	800	145.76
10	900	148.99
11	1000	146.55
12	1100	147.98
13	1200	146.10
14	1300	145.45
15	1400	145.18
16	1500	145.26
17	1600	148.63
18	1700	147.08
19	1800	149.47
20	1900	147.04
21	2000	145.82
22	2100	145.92
23	2200	145.34
24	2300	145.14
25	2400	146.50
26	2500	151.62
27	2600	147.86
28	2700	145.87
29	2800	156.29
30	2900	149.45
31	3000	146.66
32	3100	147.47
33	3200	148.44
34	3300	148.83
35	3400	147.00
36	3500	145.57
37	3600	147.13
38	3700	146.29
39	3800	147.85
40	3900	150.72
41	4000	148.75
42	4100	147.92
43	4200	147.68
44	4300	147.85
45	4400	147.38
46	4500	145.76
47	4600	145.34
48	4700	146.29
49	4800	149.25
50	4900	146.80

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 Melbourne (-37.81400, 144.96332) and Los Angeles (34.05223, -118.24368). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	12,764 km
Vacuum RTT floor	85.15 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	125 ms
Low-latency fiber material floor	124.49 ms
Engineering floor (5% path allowance)	131.26 ms
Research 1.33× mapped-fiber reference	166.24 ms
Estimated unamplified path loss	2680.4 dB
Transparent optical spans / inline amplifiers	168 / 167
Published RTT inflation over fiber floor	1.18×

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	145.14 ms
Average RTT	147.7 ms
Maximum RTT	156.29 ms
Standard deviation	2.24 ms
Stdev / average	1.5%

RTT trend

Estimated route stability across the selected time window.

Average: 147.9 ms
Minimum: 146.3 ms
Maximum: 149.2 ms
Average loss: 0.02%

Route Context

Departure PoP: Melbourne (MEL)
Destination PoP: Los Angeles (LAX)
Region overview: Asia Pacific → North America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Los Angeles to Melbourne latency and RTT — 145.4 ms

Fastest routes departing Melbourne (MEL)

Melbourne to Sydney latency and RTT — 9.8 ms
Melbourne to Singapore latency and RTT — 88.3 ms
Melbourne to Tokyo latency and RTT — 113.2 ms
Melbourne to Hong Kong latency and RTT — 137.4 ms
Melbourne to Taipei latency and RTT — 141.7 ms

Fastest routes arriving at Los Angeles (LAX)

Seattle to Los Angeles latency and RTT — 26.6 ms
Miami to Los Angeles latency and RTT — 56.8 ms
New York to Los Angeles latency and RTT — 58 ms
Ashburn to Los Angeles latency and RTT — 60 ms
Tokyo to Los Angeles latency and RTT — 101.5 ms

Same corridor (Asia Pacific → North America)

Tokyo to Seattle latency and RTT — 84.6 ms
Taipei to Seattle latency and RTT — 115.7 ms
Hong Kong to Seattle latency and RTT — 129.9 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/mel-lax.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Melbourne → Los Angeles 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.

Melbourne, Australia → Los Angeles, USA RTT