[header] How to measure bends when bending pipes [title] Estimate the overall length of the pipe. [step] Depending on the length of the bends and the length of the spaces between them, determine the total length of pipe or tubing you require. Ensure that a couple of inches (or centimeters) of margin is available to accommodate any errors in calculation or judgment. 
[title] Measure the distance for the first bend. [step] From one end of the tube, mark the point for the first bend.