# [?] Avoid problem with Units Seconds vs. s?

Posted 4 years ago
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 This ist only my first simple steps to build a computation to dimension an upload service. Even the first steps are not easy. If i am evaluating this: uploadtime[filesize_, bandwidth_] := (filesize / bandwidth) uploadtime[UnitConvert[Quantity[12770776, "Bytes"], "Megabits"], Quantity[2.4, "Megabits"/"Seconds"]] I am getting this: Quantity[42.5693, "Seconds"] If I am evaluating this: Convert[Month, Second] I am getting this: 2628000 Second If I am mulitplying both results I am getting: Second (Quantity[52560000, ("Megabits")/("Seconds")]) What am I doing wrong?
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Posted 4 years ago
 First, you wrote this function: uploadtime[filesize_, bandwidth_] := (filesize/bandwidth); You can use this function with Quantities. For example, uploadtime[ Quantity[12770776, "Bytes"], Quantity[2.4, "Megabits"/"Seconds"]] Quantity[42.5693, "Seconds"] As you can see, there is no need to call UnitConvert. The division operation handles unit conversion automatically.You mentioned that you also evaluated:  UnitConvert["Month", "Second"] Quantity[2628000, "Seconds"] Is this correct? Can you type-out what calculation seems to not be working for you?
Posted 4 years ago
 Can you try formatting your code? It's hard to read and I'm not sure I am understanding what you are doing. You can format your code by highlighting and clicking the "code sample" button. The code sample button is the first button above the text input field:It looks like you are typing out "Second" by itself instead of typing Quantity[2628000, "Seconds"].
Posted 4 years ago
 Needs["Units"] Convert[Month, Second] Out[1] 2628000 Second Quantity[20, "Megabits"/"Seconds"] * Convert[Month, Second] Out[2] Second (Quantity[52560000, ("Megabits")/("Seconds")]) I expected to have only one unit of Seconds either Second or s and not both of them
Posted 4 years ago
 Welcome to Wolfram Community! Please make sure you know the rules and how to format code properly, which you can find here: https://wolfr.am/READ-1ST Not formatting your code can make it unusable to other members. Please respect forum rules.
Posted 4 years ago
 Convert[Month, Second] Quantity[20, "Megabits"/"Seconds"] %1 * %2 
 You're mixing two packages, the built-in functionality and the one from (the very old) Units. Try not to use the Units package any more, everything is now built-in, use the functions: UnitConvert (*also to 'simplify' *) Quantity QuantityMagnitude `