---
title: "3-Point Saddle Calculator — 45°/22½° Marks & Shrink | BendBoss"
description: "3-point saddle calculator for EMT: enter the obstruction height and the distance to its center to get the center mark and both side marks, using the 2½″-per-inch spacing and 3/16″-per-inch shrink from bender manufacturer tables."
url: https://bendboss.app/3-point-saddle-calculator/
language: en
last_reviewed: 2026-11-14
---

[BendBoss](https://bendboss.app/) › 3-point saddle

# 3-point saddle calculator

A three-point saddle hops a conduit over a pipe or small obstruction: a 45° bend in the middle and a 22½° bend on each side. The side marks sit 2½″ from the center for every inch of obstruction height, and the saddle shrinks 3/16″ per inch.

Last reviewed Nov 14, 2026 · Sources at the end of the page

_Interactive calculator on the web page: https://bendboss.app/3-point-saddle-calculator/_

Center bend 45°, sides 22½°; the side marks are 2½″ from the center per inch of height.

## The 3-point saddle formula (45° center)

Center mark = distance to center of obstruction + (height × 3/16″)  
Side marks = center mark ± (height × 2½″)

These constants come straight from Klein Tools' saddle "ZIP guide": 1″ of height puts the return bends 2½″ from the center with 3/16″ of shrink, 2″ puts them 5″ away with 3/8″, and so on. Klein's steps: add the shrink to the distance to the center of the obstruction, make the center mark, then mark the return bends on both sides.

## Worked example: 4″ pipe, center 30″ from the end

  1. Shrink: 4 × 3/16″ = **3/4″**.
  2. Center mark: 30″ + 3/4″ = **30 3/4″**.
  3. Spacing: 4 × 2½″ = **10″** each side.
  4. Side marks: **20 3/4″** and **40 3/4″**.
  5. Bend 45° at the center mark, roll 180°, bend 22½° at one side mark, then 22½° at the other in the same direction as the second bend.

## Klein saddle table (45°/22½° and 60°/30°)

Height| 45°/22½°: center to side| 45°/22½°: shrink| 60°/30°: center to side| 60°/30°: shrink  
---|---|---|---|---  
1″| 2 1/2″| 3/16″| 2″| 1/4″  
2″| 5″| 3/8″| 4″| 1/2″  
3″| 7 1/2″| 9/16″| 6″| 3/4″  
4″| 10″| 3/4″| 8″| 1″  
5″| 12 1/2″| 15/16″| 10″| 1 1/4″  
6″| 15″| 1 1/8″| 12″| 1 1/2″  
Klein Tools ZIP guide for saddles. The calculator above uses the 45°/22½° column — the one BendBoss uses.

## Tips from the field guides

  * Measure to the **center** of the obstruction, not its edge.
  * Add a little clearance to the height so the conduit doesn't ride on the pipe.
  * For tall or wide obstructions, switch to a [4-point saddle](https://bendboss.app/4-point-saddle-calculator/) — the run stays flat across the top and pulls easier.

## Common questions

### What is the multiplier for a 3-point saddle?

With a 45° center and 22½° sides, the side marks go 2½″ from the center mark for each inch of obstruction height (Klein Tools ZIP guide).

### How much does a 3-point saddle shrink?

3/16″ per inch of height for a 45°/22½° saddle, and ¼″ per inch for a 60°/30° saddle, per Klein Tools.

### Where do I measure a 3-point saddle from?

From the end of the conduit to the center of the obstruction. Add the shrink to that distance to get the center mark.

### When should I use a 4-point saddle instead?

When the obstruction is wide or tall. A 4-point saddle is two offsets with a flat top, so it clears wide objects and pulls easier.

## Sources

  * [Klein Tools, Conduit Bender and Angle Setter™ Guide (ZIP guides for offsets and saddles)](https://data.kleintools.com/sites/all/product_assets/documents/instructions/klein/mkt200917_conduitbender_anglesetter_manual_mobile_B.pdf)
  * [nVent Gardner Bender, Hand Benders How-To Guide B-0040](https://file.ecmindustries.com/-/media/inriver/B-0040.pdf)

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## Related bend guides

  * [4-point saddle](https://bendboss.app/4-point-saddle-calculator/)
  * [Offset calculator](https://bendboss.app/offset-calculator/)
  * [Offset multiplier & shrink chart](https://bendboss.app/offset-multiplier-chart/)
  * [Kick](https://bendboss.app/kick-calculator/)
  * [The BendBoss app](https://bendboss.app/conduit-bending-app/)