Johannesburg to Singapore ping and RTT: 309.5 ms, 9.53 ms jitter, 84.85 ms fiber floor, and 27.4% efficiency across AS203314. Updated 2026-08-10.

🇿🇦 This page compares the published ping and round-trip time (RTT) from Johannesburg (JNB) to 🇸🇬 Singapore (SIN) with vacuum and optical-fiber physical limits.

As of August 10, 2026, the Johannesburg → Singapore route on Hats Network averages 309.5 ms RTT across a 50-sample daily ICMP echo measurement round, 3.65× the theoretical fiber-floor limit of 84.85 ms.

Among the 19 measured routes departing Johannesburg, this route ranks 13th fastest by average RTT.

With a stdev-to-average ratio of 3.3%, this route sits close to the network-wide stability median of 3.1%. Across the round, per-probe RTT ranged from 297.86 ms to 347.43 ms with a standard deviation of 10.36 ms.

Latency Summary

Metric	Value
RTT	309.5 ms
Jitter	9.53 ms
Packet Loss	0%
Standard Fiber Floor	84.85 ms
Fiber Efficiency	27.4%
Latency Tier	High
Source Region	Africa
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: JNB → SIN

50 ICMP echo samples at 100 ms intervals · round 2026-08-10 · avg 309.5 ± 1.47 ms (SE)

Sample distribution: box = interquartile range (303.3–312.1 ms), median 306.6 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 (84.8 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	300.83
2	100	299.72
3	200	300.05
4	300	298.40
5	400	300.98
6	500	305.23
7	600	305.42
8	700	304.55
9	800	314.64
10	900	303.63
11	1000	309.19
12	1100	310.77
13	1200	332.16
14	1300	311.32
15	1400	320.18
16	1500	304.58
17	1600	303.28
18	1700	312.31
19	1800	306.60
20	1900	326.69
21	2000	317.15
22	2100	303.41
23	2200	308.71
24	2300	303.16
25	2400	299.03
26	2500	299.31
27	2600	340.35
28	2700	316.82
29	2800	307.54
30	2900	304.87
31	3000	303.25
32	3100	299.70
33	3200	297.86
34	3300	316.52
35	3400	303.38
36	3500	306.93
37	3600	308.19
38	3700	325.26
39	3800	308.82
40	3900	303.30
41	4000	307.79
42	4100	310.37
43	4200	302.39
44	4300	320.97
45	4400	306.52
46	4500	302.49
47	4600	306.22
48	4700	309.64
49	4800	347.43
50	4900	317.09

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 Johannesburg (-26.20227, 28.04363) and Singapore (1.28967, 103.85007). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,664.2 km
Vacuum RTT floor	57.8 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	84.85 ms
Low-latency fiber material floor	84.51 ms
Engineering floor (5% path allowance)	89.1 ms
Research 1.33× mapped-fiber reference	112.85 ms
Estimated unamplified path loss	1819.5 dB
Transparent optical spans / inline amplifiers	114 / 113
Published RTT inflation over fiber floor	3.65×

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 (2026-08-10) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	297.86 ms
Average RTT	309.5 ms
Maximum RTT	347.43 ms
Standard deviation	10.36 ms
Stdev / average	3.3%

RTT trend

Estimated route stability across the selected time window.

Average: 309.9 ms
Minimum: 306.3 ms
Maximum: 312.8 ms
Average loss: 0.02%

Route Context

Departure PoP: Johannesburg (JNB)
Destination PoP: Singapore (SIN)
Region overview: Africa → Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Singapore to Johannesburg latency and RTT — 310.5 ms

Fastest routes departing Johannesburg (JNB)

Johannesburg to London latency and RTT — 158 ms
Johannesburg to Amsterdam latency and RTT — 163.2 ms
Johannesburg to Paris latency and RTT — 164.4 ms
Johannesburg to Frankfurt latency and RTT — 166 ms
Johannesburg to Marseille latency and RTT — 172 ms

Fastest routes arriving at Singapore (SIN)

Hong Kong to Singapore latency and RTT — 30.7 ms
Taipei to Singapore latency and RTT — 45.2 ms
Tokyo to Singapore latency and RTT — 69.8 ms
Melbourne to Singapore latency and RTT — 88.1 ms
Sydney to Singapore latency and RTT — 95.4 ms

Same corridor (Africa → Asia Pacific)

Johannesburg to Hong Kong latency and RTT — 318.4 ms
Johannesburg to Taipei latency and RTT — 333 ms
Johannesburg to Tokyo latency and RTT — 362.7 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/jnb-sin.pings.{csv,json,yaml}. When citing, include the route, the measurement round date, and the dataset version — for example: "Hats Network latency dataset, Johannesburg → Singapore round 2026-08-10, CC BY 4.0".

Data auto-generated on August 10, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Johannesburg to Singapore Latency, Ping & RTT | AS203314