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EMT Conduit Bend Length Calculator

Calculate the total conduit length needed for a run including 90-degree bends.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
0.98 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Total conduit length needed

67.94 ft

High confidence
Arc length per bend
0.77 ft

Running these inputs gives 20.7 m as the total conduit length needed. Arc length per bend carries the most weight in this calculation, at 0.24 m. Currently reading for United States under IRC 2024 — pick a different market above and the figures re-cast accordingly.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Total conduit length = straight run length + (number of 90° bends × arc length per bend), where arc length per bend = (π/2) × bend radius, the standard quarter-circle arc length formula applied to conduit bending

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why isn't the total length just the straight run length plus the bend radius times the bend count?
Each 90-degree bend follows a quarter-circle arc, not a straight diagonal — its length along the conduit is (π/2) × bend radius, the standard quarter-circle arc length formula, which is longer than the radius alone.
What bend radius should I use?
Use the actual centerline bend radius your bender produces (or the conduit manufacturer/code minimum bend radius for the conduit size), since a larger radius adds more arc length per bend.
Does this account for conduit waste or cutting allowances?
No — this calculates the theoretical centerline length of the finished run only. Add your own allowance for cutting waste, termination stub-ups, and box/fitting depths when ordering material.