OT How to convert inch pounds to foot pounds

Jonak · Mar 13, 2013

My inch lb torque wrench only goes to 200 inch lbs. Needing 300, so,How to convert? Thanks to you in advance,it will be a big help.Thank You!!

nhboyd · Mar 13, 2013

divide by 12. 300 in pounds / 12 = 25 ft pounds.

J.Wondergem · Mar 13, 2013

Divide it by twelve.

GlenIdaho · Mar 13, 2013

You can find that conversion on the Torque conversion page here:

www.onlineconversion.com/torque.htm

To convert foot pounds to inch pounds, multiply by 12.
To convert inch pounds to foot pounds, divide by 12.

John B. · Mar 13, 2013

12 inch pounds equals 1ft pound

300 / 12=25

25ft lbs is what you need.

dr sportster · Mar 13, 2013

The max of your nice inch lb wrench is 16.6 ft /lbs. If you have a good old beam style wrench you should think about a larger torque wrench and not trying to max out what is an acurate and somewhat delicate instrument. If the wrench goes to 200 inch lbs and you need to torque to 300 inch/lbs. that would call for a wrench that goes to 25 ft/lbs.

Jonak · Mar 13, 2013

Thanks to all, I had suspected it was 12 as you say, but I was not sure and wanted to be correct.

Texasmark1 · Mar 14, 2013

You said you need 300 out of a 200. Move the handle. The feet part of the foot-lbs is the length of the handle from the pivot point to the handle. Put a cheater pipe on it such that you increase that distance by half again, center of the existing handle to the center of the cheater handle. Then when you read 200 you are actually torqueing to 300.

Mark

john *.?-!.* cub owner · Mar 14, 2013

Texasmark, that would only work if you moved the measuring equipment out to the end, but with the cheater pipe it will still be in the same place, so it would be easier to pull the handle, but not change the reading. for your idea to work, the extension would have to be between the torque wrench and the bolt, not on the end of then handle.

Texasmark1 · Mar 15, 2013

Mine has a mechanical dial gauge. The socket interface connects
to the dial calibration marks on the gauge. The needle goes all
the way back to the handle. The needle registers what the
handle is doing with respect to the socket adapter.

If I add the length as I said, the pressure I physically have to
exert on the "cheater" is going to be less than the
pressure/torque recorded on the dial by the difference in
distance measured from the wrench handle to where my hand is.

However, If we get back to the original question, I will agree that
you have to add feet between the socket interface and the bolt to
be cracked. If one adds 2' of extension, then the dial says that
there is say 100# of torque applied a distance of 2' from the
bolt, or the bolt is seeing 200 ft-lbs of torque regardless of how
much energy you have to exert as a result of cheater pipes.

Mark

Indiana Ken · Mar 15, 2013

Not sure what you want to do however the attached chart may help.

OT How to convert inch pounds to foot pounds

Jonak

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nhboyd

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J.Wondergem

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GlenIdaho

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John B.

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dr sportster

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Jonak

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Texasmark1

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john .?-!. cub owner

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Texasmark1

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Indiana Ken

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