Construction

Rolling Offset Calculator

Find pipe travel and run for a rolling offset.

Offset

Fitting angle

Calculated Output

Travel (pipe length) 1.414

Run 1

Formula: travel = offset ÷ sin(angle) ; run = offset ÷ tan(angle)

Step-by-Step Breakdown

1. Values used:

2. Offset = 1

3. Fitting angle = 45

5. Travel (pipe length) = 1.414

6. Run = 1

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The math behind it

travel = offset ÷ sin(fitting angle); run = offset ÷ tan(fitting angle). 45° fittings are most common.

12 in offset with 45° fittings → 16.97 in travel.

True rolling offset?

For a 3D offset, combine vertical and horizontal offsets with Pythagoras first.