What is the multiplier for a 30 degree offset?

2. Multiply the offset depth by 2 to get the distance between bends; shrink is 1/4 in per inch of offset.

How far apart are the bends on a 3-point saddle?

Make a 45° center bend and two 22.5° outer bends, each 2.5 times the obstacle height from the center mark. Shrink is 3/16 in per inch of height.

What is the take-up on 1/2 inch EMT?

5 in on a standard hand bender (3/4 in EMT is 6 in, 1 in EMT is 8 in). Subtract it from the stub height to get your mark.

Conduit & Pipe Bending Calculator — Offsets, Saddles, 90s

All calculators

Formula

Distance = Offset × (1/sin θ) · Shrink = Offset × (csc θ − cot θ)

Material

Trade size

Bend type

Bend angle

Offset depth

End to obstacle

Distance between bends

12in

Shrink (total)

1 5/8in

First mark (from end to obstacle − shrink)

34 3/8in

Second mark

46 3/8in

Multiplier 2.000 · shrink 1/4 in per inch of offset

1/2" EMT specs

Outside diameter11/16 in90° take-up5 inCenterline radius4 inGain per 901 11/16 in

Take-up values are typical for hand benders (≤1-1/4") and one-shot/mechanical shoes above that. Always confirm against the deduct stamped on your bender.

How to use this calculator

Work out bend marks, shrink and take-up for EMT, IMC, rigid, PVC and copper by trade size.

Pick the material and trade size of the conduit or pipe.
Choose the bend type: offset, 3- or 4-point saddle, stub-up, back-to-back or rolling offset.
Enter the offset depth or stub height and the distance to the obstacle.
Transfer the marks to the pipe and line them up with the bender arrow.

Frequently asked questions

What is the multiplier for a 30 degree offset?: 2. Multiply the offset depth by 2 to get the distance between bends; shrink is 1/4 in per inch of offset.
How far apart are the bends on a 3-point saddle?: Make a 45° center bend and two 22.5° outer bends, each 2.5 times the obstacle height from the center mark. Shrink is 3/16 in per inch of height.
What is the take-up on 1/2 inch EMT?: 5 in on a standard hand bender (3/4 in EMT is 6 in, 1 in EMT is 8 in). Subtract it from the stub height to get your mark.