Lesson learnt: never trust a salesman. 
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It’s a US thing. They do mph for miles per hr, so figure kph makes sense… it does not.
Kph= kilo per hour , thousend off what per hour. Stupid
Km/h= kilometers per hour, thats thousend meters /hour.
Mandytory prep schooling for US. Your bellybuttun is not center of the earth:innocent:
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Although most engineering books will define it as km/h
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The only logical compromise is kmph - then no one is happy!
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The unit “kph” seems to be a problem for many users worldwide. Why not include “km/h” and probably others in the user’s settings so that ZWIFT gets an international touch. Kilometers per hour (km/h) is the most common unit in Europe. To me that’s a “bug” and if not corrected, ZWIFT is not the right tool.
As said above, Kph means Kilo Per Hour (Kilogram? Kilowatt? 1000 units of an unknown measure)
The correct abbreviation of Kilometre is Km
Just as Kg means Kilogram, KW is Kilowatt, etc
It’s not semantics: one is just plain wrong and the other is correct.
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I hate to say it, but that’s an abbreviation, not a (SI) unit, and publishers can do as they please. As a random example, here’s an excerpt from the style guide of The Economist.
lower case Abbreviate:
kilograms (not kilogrammes) to kg (or kilos)
kilometres per hour to kph
[…]
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Abbreviation is “k” for kilogram, kilometer, … and means just 1000.
SI base unit is meter for length/distance, kilometer is derived unit, abbreviation is km. So kph can never be ok - “translated” in (metric) SI it means just kilo per hour - can be 1000 apples, cars, whatever per hour.
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I’m glad you agree. 
https://en.m.wikipedia.org/wiki/Watt
The symbol for watt is „W“ not „w“. It annoys me every time i see it. 
„kcal“ not „Kcals“
„W/kg“ not „w/kg“
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Fair enough, but this thread is about not understanding the coexistence of abbreviations and unit symbols.
It is not about km/h only, Jürgen is right.
And I do not agree with you @Captain_Picaro - when Zwift shows the speed and power, I mean with NUMBERS, they must use the proper UNITS = km/h.
It’s good you could clear that up. 
Edited now, I am not sure you understood me.
Sorry, being not a native speaker is my English not perfect.
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This is a pretty silly discussion. I’m autistic, a programmer, and I’ve been frequently called a technocratic [whatnot] because, among other things, I insist on providing my birth date as ISO 8601 ordinal, or not at all (I guess I’m just not that much into Horrorscopes).
Yet, the abbreviation kph for kilometre per hour (with multiple variations regarding case, dots and arbitrary substitute and/or supporting characters) in natural language predates SI by more than half a century.
Do I want to see it on Zwift? No.
Do I consider it an odd, quaint, distasteful choice? Yes.
Is it wrong? No.
I guess that’s why mom and pop shops like Reuters do keep using it.
If you enjoy Wikipedia that much, the Kilometres per hour page lede sums it up rather neatly:
The kilometre per hour (SI symbol: km/h ; abbreviations: kph , kmph , km/hr ) is a unit of speed, […,]
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“Kilometres per hour” is a term
“Kph” is an abbreviation of that term
“Kph” is not a unit of measurement.
“K” means 1000. “Kph” means 1000 per hour.
1000 what? If not specified, it’s not a metric of anything.
It is plainly wrong but people using Imperial will have difficulty in seeing it.
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By the way, in addition to the kilopond-hours, the UI also incorrectly writes “KM” instead of “km”…
yes, please add km/h!! will help a lot to train on Zwift
Four years have passed, and there is still forever to go. Happy 4th anniversary!
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