How to Bend EMT Conduit

1. Know your bender's take-up before you mark anything

Every 90° consumes conduit in the sweep, and the take-up (the deduct) tells you how much. Typical values: 5" for ½" EMT, 6" for ¾", 8" for 1", 11" for 1¼" — but they vary by manufacturer, so use the number stamped on your bender head, not one from memory.

Learn the bender's marks too: the arrow is for stubs and offsets, the star (back-of-bend mark) is for back-to-back 90s, and the rim notch or teardrop is for the center bend of a three-point saddle.

2. Bend a 90° stub

Say you need a 12" stub with a ¾" bender (6" take-up). Subtract the take-up from the stub height and mark at 6" from the end. Line the mark up with the arrow, hook facing the free end. Bend on the floor with heavy, steady foot pressure on the pedal — that's what wraps the conduit around the shoe instead of kinking it. EMT springs back a degree or two, so sneak slightly past 90° and check the stub with a level, not by eye.

A kinked or flattened bend is a code problem: NEC 358.24 says bends can't reduce the internal diameter, with minimum radius per Chapter 9, Table 2. A proper bender shoe meets that radius automatically — a kink doesn't. Cut it out and start over.

3. Back-to-back 90s

A back-to-back is two 90s in one stick — a U between two walls, or the top of a rack drop. Bend the first 90 normally, then measure the back-to-back distance from the outside (back) of that bend and mark.

Put the mark on the star point — not the arrow — hook facing back toward the first bend, and bend the second 90. The star marks the back of the finished bend, so no deduct is needed. Sight down the conduit first to keep both bends in one plane.

4. Offsets: multipliers and shrink

An offset is two equal opposing bends that jog the run over an obstruction or into a knockout. Distance between marks = offset depth × multiplier: 6.0 for 10°, 2.6 for 22.5°, 2.0 for 30°, 1.4 for 45°. The 30° offset is the field default — easy math, smooth pull.

Offsets also shrink the run, since the conduit travels diagonally through the jog. Shrink per inch of depth: about 1/16" at 10°, 3/16" at 22.5°, 1/4" at 30°, 3/8" at 45°. Add total shrink before laying out the marks, or the stub lands short.

Example: 4" offset at 30°. Marks are 4 × 2.0 = 8" apart; shrink is 4 × 1/4" = 1". Bend the first mark at the arrow, rotate exactly 180°, and bend the second back to level, hitting the same angle both times — unequal angles make an offset look drunk.

5. Kicks

A kick is a single shallow bend — usually well under 45° — that angles a run up or over, often added to a stick that already has a 90 in it, like kicking a rack of pipes into a line of knockouts.

Measure the rise where it matters and check the bend in place; kicks are the one bend where checking against the structure beats the formula. On a rack, bend every pipe to the same angle — the rack telegraphs every error.

6. Three-point saddles

A three-point saddle carries the run over a small round obstruction — another pipe, a joist chord — and back down in line. Standard version: one 45° center bend, one 22.5° bend each side. Mark the obstruction's center on the conduit, then advance that mark 3/16" toward the far end per inch of saddle depth to cover shrink.

Place the outer marks 2½" each side of the adjusted center per inch of depth — a 3" saddle gets marks 7½" out. Bend the center 45° at the bender's rim notch (saddle mark), then flip the conduit and bend each outer mark to 22.5° at the arrow, opposite the center. Keep all three bends in one plane or the saddle won't sit.

7. Four-point saddles

For a wide or square obstruction — a duct, a beam — use a four-point saddle: two offsets back-to-back. Bend an offset up, run flat across the top, then a matching offset down. Same multiplier and shrink math as any offset, plus the obstruction's width between the two inner marks.

Lay out all four marks before the first bend and double-check rotation at each one — with four bends in a stick, one 180° error scraps the piece. This is where a no-dog level earns its keep.

8. Stay under 360° between pull points

NEC 358.26 limits an EMT run to 360° of bends — four quarter bends — between pull points such as boxes, conduit bodies, and enclosures. Everything counts: a 30° offset eats 60°, a three-point saddle 90°. Two 90s plus two 30° offsets and you're at 300° with almost nothing left.

Plan pull points before you bend, not after the pull fails. Fewer degrees means easier pulls and less insulation stress, so stay well under the limit where you can.

9. Kill the dog-legs

A dog-leg is two bends in one stick that end up in different planes, so the conduit corkscrews instead of lying flat. Prevent it: strike a layout line down the conduit, reference every mark to it, and sight down the pipe after each bend.

Small errors can be nursed out with a slight counter-twist. Big ones can't — re-working EMT wrinkles and weakens it, so cut out the bad section and bend new. On exposed commercial work the conduit is the finish product; inspectors and GCs read a clean rack as a clean job.

What is the take-up on a ½ inch EMT bender?

Typically 5 inches — you mark 5 inches back from the desired stub height. Take-up varies by manufacturer, so use the value stamped on your bender head; common values are 5, 6, 8, and 11 inches for the four common trade sizes.

What multiplier do I use for a 30 degree offset?

Use 2.0 — the distance between marks is twice the offset depth. Add shrink of about a quarter inch per inch of depth so the run doesn't come up short.

How many bends are allowed between pull points?

NEC 358.26 allows a maximum of 360 degrees of bends, the equivalent of four quarter bends, between pull points such as boxes and conduit bodies. Every bend counts, including offsets, kicks, and saddles.

Why does my offset come out twisted?

That's a dog-leg — the conduit rotated off-plane between bends. Strike a reference line down the conduit, rotate exactly 180 degrees between bends, and check with a level or no-dog before bending.

Should I bend past 90 degrees to allow for springback?

Slightly, yes. EMT springs back a degree or two after pressure comes off, so go just past the target and verify the finished stub with a level rather than trusting the angle marks alone.

Can I straighten or re-bend EMT that came out wrong?

Minor corrections of a few degrees are fine, but repeated re-bending wrinkles and weakens the tubing. If a bend is kinked or the internal diameter is reduced, NEC 358.24 makes it non-compliant — cut out the bad section and bend new.