Kicked 90 Calculator
A kicked 90 combines a 90-degree stub-up with an offset kick in a single piece of conduit. It is used when you need the conduit to turn 90 degrees and shift horizontally at the same time. Enter your stub height, kick offset, kick angle, and conduit specs to get the mark positions, travel, and shrink.
How a Kicked 90 Works
The kicked 90 starts with a standard 90-degree bend, but adds an offset bend (the kick) near the end of the stub. The kick shifts the conduit horizontally to reach a box or connector that is not directly in line with the conduit run. Because the kick creates shrink, the 90-degree mark must be adjusted by adding the shrink value back in.
90 Mark = Stub Height − Deduct + Shrink
Shrink from the kick is added back to compensate for the lost length
Kick Travel by Angle
| Kick Angle | Multiplier | Shrink per Inch |
|---|---|---|
| 10° | 5.759 | 1/16" |
| 15° | 3.864 | 1/8" |
| 22.5° | 2.613 | 3/16" |
| 30° | 2.000 | 1/4" |
Frequently Asked Questions
What is a kicked 90 bend?
A kicked 90 is a combination bend that includes a 90-degree stub-up and an offset kick in a single piece of conduit. It is used when conduit needs to turn 90 degrees and also shift horizontally at the same time, such as when a conduit run on a wall needs to stub into a box that is offset from the conduit path.
How does shrink affect the 90-degree mark in a kicked 90?
The kick offset creates shrink, which shortens the effective conduit length. To compensate, the shrink amount is added back to the 90-degree mark position. The formula is: 90 mark equals stub height minus deduct plus shrink. Without this adjustment the stub-up would come out shorter than intended.
What kick angle should I use for a kicked 90?
Common kick angles are 10, 15, 22.5, and 30 degrees. Smaller angles like 10 degrees produce a gentle offset with a longer travel distance, while larger angles like 30 degrees create a sharper kick with a shorter travel. The 22.5-degree angle is the most common choice for kicked 90s because it provides a good balance between travel distance and bend sharpness.