Bad Unit?

Bad Unit? - Long Ton v. Tonne v. Short Ton v. British Ton... - Messages

#1 Posted: 6/5/2025 9:10:38 PM
⚜ Kenny Lemens, P.E. ᵂᴵ

⚜ Kenny Lemens, P.E. ᵂᴵ

74 likes in 166 posts.

Group: User

Greetings,

I just want to verify something quick: is 'tonne calibrated to the wrong value? If this is supposed to be a Long Ton, then I would've thought the value to be 2,240 lbm, but I'm seeing it as 2,204 lbm.

May this be of Good Help;
⚜ Kenny Lemens, P.E. ᵂᴵ
"No matter where you go, there you are." -Buckaroo BanzaiHotkeys: https://en.smath.com/forum/resource.ashx?a=45771&b=2
#2 Posted: 6/6/2025 8:33:10 AM
Davide Carpi

Davide Carpi

1,423 likes in 2,879 posts.

Group: Moderator

tonne in SMath it is defined as 10^3 kg that should be 2204,62 lbm

immagine.png

Wolfram: https://www.wolframalpha.com/input?i=1000+kg
Google: https://www.google.com/search?q=1000+kg+to+lbm
Edited 6/6/2025 8:34:20 AM
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2 users liked this post
Andrey Ivashov 6/6/2025 10:01:11 PM, ⚜ Kenny Lemens, P.E. ᵂᴵ 6/6/2025 10:07:10 PM
#3 Posted: 6/6/2025 10:06:55 PM
⚜ Kenny Lemens, P.E. ᵂᴵ

⚜ Kenny Lemens, P.E. ᵂᴵ

74 likes in 166 posts.

Group: User

Greetings,

You are correct; tonne is defined correctly. The "long ton (British ton)" is 2,240lbs; I was under the misunderstanding the British Ton and the Metric Tonne were the same unit of mass.

May this be of Good Help;
⚜ Kenny Lemens, P.E. ᵂᴵ
"No matter where you go, there you are." -Buckaroo BanzaiHotkeys: https://en.smath.com/forum/resource.ashx?a=45771&b=2
#4 Posted: 6/7/2025 10:27:55 AM
Davide Carpi

Davide Carpi

1,423 likes in 2,879 posts.

Group: Moderator

Better to always double check the units conversions .

There's also a short ton aka US ton; both short and long tons are defined as 1 ton =20 hundredweight, but the hundredweight is defined differently in US (100 pounds) and in Britain (112 pounds).
Edited 6/7/2025 10:28:14 AM
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