About BendBoss

BendBoss is an independent conduit bending calculator for electricians — offsets, saddles, stub-ups, kicks, parallel runs and 90s — sold once for $25.00 and installed straight from this website.

Why it exists

Bending apps for electricians have been around for years, and their public app-store reviews keep asking for the same things: input you can use with gloves on, the shrink and the multiplier explained instead of blended together, different conduit sizes in the same parallel rack, and no subscription. BendBoss was built around those requests.

Where the numbers come from

Every constant in BendBoss and on this site traces back to a published source:

• Offset multipliers and shrink: the offset tables in the Greenlee Site-Rite, Klein Tools and Gardner Bender hand-bender guides (they agree), with the multiplier calculated exactly as 1 ÷ sin(angle).
• Take-up / deduct per size: each manufacturer's own guide (Greenlee, Klein Tools, IDEAL, Gardner Bender), stored with the bender it belongs to — never borrowed from another brand.
• Saddle constants: the Klein Tools saddle guide and the IDEAL Bender Guide, which print the same 2½″ and 3/16″ per inch values.
• Parallel-offset shift, kick placement and developed length: the IBEW Local 903 Bending Book.
• EMT outside diameters: ANSI C80.3.

Each bend guide lists its sources at the bottom and shows a worked example you can check by hand.

What we promise and what we don't

BendBoss does the arithmetic and shows its work. It doesn't replace your judgment, your bender's markings or the NEC. Always check a measurement before you cut.

Contact

Questions, a bend the app should handle, or a number you think is wrong: support@bendboss.app.