SettingsSettings for this calculationUS
The sum of all the straight conduit segments in the run, not counting the bends.
Straight segments only. The bends are added below from their radius, so entering the whole developed run here counts every corner twice. Measure between TANGENT POINTS — where the conduit stops being straight — rather than corner to corner: a large-radius bend can take a surprising amount out of what looks like a straight leg.
The total number of 90-degree bends in the conduit run.
Ninety-degree bends only. Two 45s turning the same corner are not one 90 here: they develop a different run and pull differently. This count also carries a limit that is not about distance — most codes cap the total bend angle between pull points at four right angles, so a fifth bend means a pull box rather than a longer pull. Offsets and kicks count toward that total even though each is small.
The centerline bend radius used for each 90-degree bend.
The CENTRELINE radius, which is how benders and fittings are specified — not the inside radius you can put a tape against, which is smaller by half the conduit's outside diameter. Two minimums apply and the larger wins: the conduit's own minimum for its size, and the cable's minimum bend radius, which for large or armoured cable is frequently the one that governs.
Total conduit length needed
68.36 ft
- Arc length per bend
- 0.79 ft
They open the calculator with your figures already in it
EMT Conduit Bend Length Calculator: 68.36 ft — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- 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
Inputs used
- Straight Run Length (Sum of All Straight Segments)
- 66 ft
- Number of 90° Bends
- 3
- Bend Radius
- 6 in
Intermediate steps
- Arc length per bend
- 0.79 ft
What this calculation does not cover
- This is the length of pipe to buy, not where to mark it. A bender's take-up — the distance from the end of the stub back to the mark, about 5 in (127 mm) for 1/2 in EMT and rising with size — is what puts a 90 in the right place, and the arc length here is a different figure entirely. Use this for material and the bender's take-up for the layout, or every stub finishes at the wrong height.
- The bend count is not tested against the pull. A run is limited to 360 degrees of bend between pull points, which is four 90s and no more, and this page will happily total twenty of them. Past the limit the run either will not pull at all or the conductors get dragged through hard enough to damage the insulation, and the fix is a pull box that was never in the estimate.
- Only 90° bends are counted. Offsets, kicks, saddles and 45s each add developed length over the straight line they replace, so a run threaded around ductwork with a dozen offsets in it consumes noticeably more pipe than a straight-run-plus-90s total — allow for those separately or the last stick lands short.
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.
Part of bigger jobs
This trade is one line of several job takeoffs. Run the whole job and every other trade comes back with it, off the same measurements.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-06 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations1
- 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
Cite this page
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.
Protection this work requires
- Stop and check first. Textured ceiling coatings, board behind panels, floor tiles and bitumen adhesive in older buildings — built before asbestos was banned or phased out where you are — can contain asbestos, and drilling or sanding them releases fibres. Do not disturb it — have it sampled first. This is not a job for better PPE.
Tools and safety for this job
To first-fix electrical and run the dedicated circuit from the consumer unit (panel). Generic types, no brands, no prices.
- Assume every cable is live until proved dead at the point you will touch, with a two-pole tester you have just proved on a known source.
- Digging blind strikes gas, water and power every day: get the plans, scan with a cable avoidance tool, and hand-dig trial holes over anything you find.
First-fix electrical: This site does not publish a tool list for electrical installation work. In every market it serves, fixed wiring is either reserved to a registered electrician or notifiable to a building authority, and the failure mode is a fire or an electrocution months later rather than a visibly bad job on the day. The calculator gives you the quantities to discuss and to buy against. The installation is a job for a qualified electrician, and the certificate they issue is the point of them.
Run the dedicated circuit from the consumer unit (panel): This site does not publish a tool list for a new circuit and does not certify it. The cable's size and type, the protective device at the board, how the circuit is protected against faults, and how it is buried or run outside are the electrician's to decide from the wiring regulations or electrical code; in England and Wales a new circuit is notifiable work for a registered electrician, and across North America it needs a permit and an inspection. This site's cable pages give a gauge, a breaker rating and a voltage drop, never a cable to install; the conduit page measures the route's length.