New York, USA to Tokyo, Japan: ICMP echo RTT statistics, jitter, packet loss, fiber efficiency from the 2026-08-15 measurement round.

🇺🇸 New York, USA (NYC) → 🇯🇵 Tokyo, Japan (TYO)

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

In the 2026-08-15T04:03:13Z round, ICMP echo RTT from New York to Tokyo averaged 142.6 ms over 50 samples, with a minimum of 138.01 ms and a maximum of 151.4 ms; no packets were lost. Jitter of 3.03 ms puts this long-haul path in the Good latency tier with a steady spread.

This route ranked 13th among the 19 outbound routes measured in the same round. Its variability was about 2.6% of the average RTT, noticeably tighter than the 3.08% median variability across those routes, so the connection remained consistent while carrying the distance penalty.

For the roughly 10,873 km great-circle separation, the measured average is only 1.34 times the theoretical fiber floor, or 74.7% fiber efficiency. That leaves limited overhead for a trans-Pacific route and suggests the RTT is close to what a direct fiber path would allow.

Latency Summary

Metric	Value
RTT	142.6 ms
Jitter	3.03 ms
Packet Loss	0%
Standard Fiber Floor	106.47 ms
Fiber Efficiency	74.7%
Latency Tier	Good
Source Region	North America
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: NYC → TYO

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 142.6 ± 0.52 ms (SE)

Sample distribution: box = interquartile range (139.8–143.4 ms), median 141.8 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 (106.5 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	138.19
2	100	140.61
3	200	142.81
4	300	142.14
5	400	149.70
6	500	144.79
7	600	151.25
8	700	150.37
9	800	143.20
10	900	139.38
11	1000	142.55
12	1100	143.36
13	1200	139.68
14	1300	140.85
15	1400	139.11
16	1500	139.25
17	1600	143.30
18	1700	149.09
19	1800	142.07
20	1900	139.96
21	2000	140.04
22	2100	139.98
23	2200	138.47
24	2300	138.01
25	2400	144.84
26	2500	140.04
27	2600	139.50
28	2700	139.87
29	2800	142.57
30	2900	139.47
31	3000	140.37
32	3100	143.44
33	3200	139.74
34	3300	140.97
35	3400	139.06
36	3500	139.59
37	3600	144.06
38	3700	143.36
39	3800	148.25
40	3900	142.81
41	4000	141.10
42	4100	149.71
43	4200	141.60
44	4300	138.89
45	4400	141.09
46	4500	142.99
47	4600	143.15
48	4700	144.28
49	4800	151.40
50	4900	149.69

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 New York City (40.71427, -74.00597) and Tokyo (35.68950, 139.69171). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	10,872.7 km
Vacuum RTT floor	72.53 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	106.47 ms
Low-latency fiber material floor	106.05 ms
Engineering floor (5% path allowance)	111.81 ms
Research 1.33× mapped-fiber reference	141.61 ms
Estimated unamplified path loss	2283.3 dB
Transparent optical spans / inline amplifiers	143 / 142
Published RTT inflation over fiber floor	1.34×

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	138.01 ms
Average RTT	142.6 ms
Maximum RTT	151.4 ms
Standard deviation	3.67 ms
Stdev / average	2.6%

RTT trend

Estimated route stability across the selected time window.

Average: 142.7 ms
Minimum: 141.5 ms
Maximum: 144.1 ms
Average loss: 0.02%

Route Context

Departure PoP: New York (NYC)
Destination PoP: Tokyo (TYO)
Region overview: North America → Asia Pacific
Corridor overview: North America to Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Tokyo to New York latency and RTT — 144.1 ms

Fastest routes departing New York (NYC)

New York to Ashburn latency and RTT — 6 ms
New York to Miami latency and RTT — 34.3 ms
New York to Los Angeles latency and RTT — 58 ms
New York to Seattle latency and RTT — 59 ms
New York to London latency and RTT — 64.3 ms

Fastest routes arriving at Tokyo (TYO)

Taipei to Tokyo latency and RTT — 31.6 ms
Hong Kong to Tokyo latency and RTT — 45 ms
Singapore to Tokyo latency and RTT — 69.6 ms
Seattle to Tokyo latency and RTT — 84.8 ms
Los Angeles to Tokyo latency and RTT — 100.9 ms

Same corridor (North America → Asia Pacific)

Seattle to Taipei latency and RTT — 115.1 ms
Seattle to Hong Kong latency and RTT — 130.7 ms
Los Angeles to Taipei latency and RTT — 131.5 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/nyc-tyo.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, New York → Tokyo 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.

New York, USA → Tokyo, Japan RTT