ICMP round-trip latency from Frankfurt, Germany to Johannesburg, South Africa: average 188.4 ms, 4.87 ms jitter, 0% loss, and route efficiency context.

🇩🇪 Frankfurt, Germany (FRA) → 🇿🇦 Johannesburg, South Africa (JNB)

Measurement round: 2026-08-16T04:07:28Z.

The 2026-08-16T04:07:28Z measurement round used 50 ICMP echo probes from Frankfurt to Johannesburg at 100 ms intervals; the average round-trip time was 188.4 ms, with replies from 182.33 ms to 218.93 ms. All 50 probes returned, so packet loss was 0%.

Johannesburg's role as an African anchor connecting Southern Africa with Europe and Asia is visible in the route's 2.22 times inflation over the 84.87 ms fiber floor for 8,666.9 km, or about 45% fiber efficiency. The 6.75 ms standard deviation is 3.6% of the average, slightly above the 3.28% median variation across the route set.

This route ranks 16th among the 19 outbound routes from Frankfurt. The 36.6 ms gap between the fastest and slowest replies is wider than the average would suggest, so occasional slower answers drive the spread, even though the minimum and average stay close and no packets are lost.

Latency Summary

Metric	Value
RTT	188.4 ms
Jitter	4.87 ms
Packet Loss	0%
Standard Fiber Floor	84.87 ms
Fiber Efficiency	45%
Latency Tier	Fair
Source Region	Europe
Destination Region	Africa

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: FRA → JNB

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 188.4 ± 0.95 ms (SE)

Sample distribution: box = interquartile range (183.8–189.4 ms), median 186.4 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 (84.9 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	183.64
2	100	187.25
3	200	183.28
4	300	184.73
5	400	187.57
6	500	195.02
7	600	189.48
8	700	185.71
9	800	183.66
10	900	183.68
11	1000	183.78
12	1100	182.37
13	1200	182.63
14	1300	185.95
15	1400	187.64
16	1500	189.15
17	1600	187.71
18	1700	183.83
19	1800	218.93
20	1900	195.47
21	2000	186.28
22	2100	195.75
23	2200	186.27
24	2300	187.60
25	2400	185.07
26	2500	190.55
27	2600	186.01
28	2700	186.70
29	2800	188.71
30	2900	187.98
31	3000	186.18
32	3100	184.12
33	3200	186.93
34	3300	186.47
35	3400	183.33
36	3500	184.43
37	3600	182.33
38	3700	183.34
39	3800	183.28
40	3900	202.06
41	4000	192.96
42	4100	199.01
43	4200	205.67
44	4300	195.09
45	4400	187.49
46	4500	190.14
47	4600	193.61
48	4700	185.68
49	4800	182.74
50	4900	182.74

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 Frankfurt am Main (50.11552, 8.68417) and Johannesburg (-26.20227, 28.04363). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,666.9 km
Vacuum RTT floor	57.82 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	84.87 ms
Low-latency fiber material floor	84.53 ms
Engineering floor (5% path allowance)	89.13 ms
Research 1.33× mapped-fiber reference	112.88 ms
Estimated unamplified path loss	1820.1 dB
Transparent optical spans / inline amplifiers	114 / 113
Published RTT inflation over fiber floor	2.22×

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 (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	182.33 ms
Average RTT	188.4 ms
Maximum RTT	218.93 ms
Standard deviation	6.75 ms
Stdev / average	3.6%

RTT trend

Estimated route stability across the selected time window.

Average: 188.3 ms
Minimum: 186.9 ms
Maximum: 190.5 ms
Average loss: 0.02%

Route Context

Departure PoP: Frankfurt (FRA)
Destination PoP: Johannesburg (JNB)
Region overview: Europe → Africa
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Johannesburg to Frankfurt latency and RTT — 166 ms

Fastest routes departing Frankfurt (FRA)

Frankfurt to Amsterdam latency and RTT — 5.9 ms
Frankfurt to Berlin latency and RTT — 6.1 ms
Frankfurt to Paris latency and RTT — 7.6 ms
Frankfurt to London latency and RTT — 12.9 ms
Frankfurt to Marseille latency and RTT — 16.4 ms

Fastest routes arriving at Johannesburg (JNB)

Amsterdam to Johannesburg latency and RTT — 171.9 ms
Berlin to Johannesburg latency and RTT — 172.1 ms
London to Johannesburg latency and RTT — 179.6 ms
Paris to Johannesburg latency and RTT — 180.9 ms
Marseille to Johannesburg latency and RTT — 198.5 ms

Same corridor (Europe → Africa)

Moscow to Johannesburg latency and RTT — 201.9 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/fra-jnb.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Frankfurt → Johannesburg round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Frankfurt, Germany → Johannesburg, South Africa RTT