Glad you asked...
How to measure a v belt? This is done by holding the belt tight and measuring the belt from curve to curve and then doubling the number.
melissa3850     How-To Expert
Then again, this answer might help you...
The easiest way to measure a V belt or any other type of pulley belt is to first mark a starting spot on the belt. Place your mark lined up with a mark on a board or wall, then roll the belt until you get back to the beginning. Measure the distance, then subtract 2 inches.
SharonP     How-To Expert
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