Conduit Stub-Up Calculator
Calculate the arrow mark for a 90° conduit stub using a verified preset or your bender's take-up.
90-degree bend inputs
Configure the stub-up
Project information for worksheet
Marking preview
90° stub-up
Calculated field mark
Stub height minus bender take-up
90-degree stub guidance
Use the take-up printed for the actual bender
The calculation is simple; selecting the correct take-up is the critical part. Manufacturer, conduit type, trade size, and bender model must match.
What is bender take-up?
Take-up is the amount subtracted from the desired finished stub height to locate the bender arrow mark. Use the value printed on or specified for the exact bender.
How do I calculate a 90-degree stub mark?
Subtract the bender take-up from the desired finished stub height, measure that distance from the conduit end, and align the bender arrow to the mark.
Why does the calculator default to custom take-up?
Take-up varies by bender and conduit size. Custom input keeps the workflow manufacturer-neutral; verified Klein hand-bender values are optional presets.
See the verified source and limitations on the methodology page.