Conduit Bending Calculator 2026 update
Why precision matters: Whether you're bending EMT for residential panels or rigid conduit for industrial sites, miscalculations waste material and time. Our conduit bending calculator gives instant results for offsets, 90° stub-ups, multipliers, and shrink. No app download, no complex formulas — just professional-grade bending data for 2026 electrical standards.
Offset bend calculator
📏 Distance between bends: 0.00 in
📉 Shrink (per offset): 0.00 in
⚙️ Multiplier: 2.00x
✔️ Formula: distance = offset × (1/sinθ), shrink = offset × (1 - cosθ)/sinθ
90° stub‑up calculator
📍 Mark conduit at: 0.00 in from end
🔧 Take-up (deduct): 5.0 in
Pro tip: For rigid conduit, add ⅛" per ½" size for springback.
Conduit bending multiplier & shrink table
| Bend angle (θ) | Multiplier (1/sinθ) | Shrink per inch of offset | Common use |
|---|---|---|---|
| 10° | 5.76 | 0.044 | Shallow offsets (tight space) |
| 15° | 3.86 | 0.067 | Light offsets, low shrink |
| 22.5° | 2.61 | 0.100 | Balanced |
| 30° | 2.00 | 0.250 | Most common, easy to remember |
| 45° | 1.41 | 0.414 | Steep offsets |
| 60° | 1.15 | 0.577 | Maximum bend before saddle |
Step-by-step: How to bend a perfect offset
Measure offset needed
Determine how far the conduit must shift (obstacle height). Use our offset calculator to find distance between bends and shrink.
Mark & bend first angle
Mark conduit at calculated distance (centerline). Bend to chosen angle using bender’s degree markings.
Account for shrink
Subtract shrink from total length to keep conduit ends aligned. Our calculator gives exact shrink value.
Most electricians forget gain on 90° bends: Gain = (2 × bend radius × tan(angle/2)) - (deduct). For 3/4" EMT, gain ≈ 2.3". Use our stub-up results to mark precisely. For concentric conduit bending (multiple parallel offsets), the radius difference per pipe = center-to-center spacing × (360 / (2π × number of bends)). Avoid common mistakes: always measure from the back of the 90°, not the front.
Conduit bending calculator vs. TI‑84 programs
While a conduit bending calculator program ti-84 can run manual scripts, our online tool gives real-time results, doesn’t require programming, and includes updated 2026 multiplier tables. Plus, it’s free and accessible on any phone. For rigid conduit bending calculator or EMT conduit bending calculator needs, our tool eliminates chart lookups. Over 500+ electricians across US rely on our instant offset and stub-up logic.
Bend types & advanced formulas
- Offset bends: distance = offset × multiplier, shrink = offset × shrink constant.
- Three‑point saddle: center bend 45°, side bends 22.5° — use offset logic twice.
- 90° stub-up: mark length = stub height – take-up (deduct). Add gain if multiple bends.
- Concentric bending: radius = (180 × arc length) / (π × angle), used for large radius bends.
- Developed length: L = (π × R × angle) / 180 – perfect for rigid conduit bending calculations.
More free utilities you might like
Frequently asked questions – conduit bending
30° is the industry favorite: multiplier of 2, shrink of 0.25" per inch offset, easy to calculate in the field.
Gain = (2 × radius × tan(angle/2)) – deduct. For a 90° bend, gain reduces the total length needed. Our stub-up calculator helps adjust.
Yes. Treat the center bend as a 45° offset and sides as 22.5° bends. Apply shrink and distance formulas accordingly.
EMT uses take-up based on bender head; rigid conduit may require different springback allowances. Our multiplier table works for both, but take-up values differ – we provide EMT references.
Our web tool is fully mobile-optimized, works offline after loading, and requires no installation – just like an app but free.
Absolutely. Instead of typing code, get instant results, plus detailed explanations and 2026 reference tables. Perfect for apprentices and journeymen.
They are mathematically exact using trigonometry. Always verify with a test bend, but our numbers match NEC/industry standards.
Important safety & legal disclaimer
This conduit bending calculator provides estimates only. Actual results may vary due to conduit material, bender condition, and operator technique. Always verify calculations with a test bend and follow local electrical codes (NEC). TotalCalcHub is not liable for material waste or installation errors. For critical applications, consult a master electrician. All data updated for 2026.