Estimate offsets, stub-ups, rolling bends, and saddles. Track spacing, shrink, take-up, waste, and stick counts. See practical graphs, exports, examples, and concise guidance today.
Use the calculator for standard offsets, rolling offsets, 90° stub-ups, and three-point saddles. The result block appears above this form after submission.
| Mode | Example Inputs | Key Output | Estimated Cut Length |
|---|---|---|---|
| Standard Offset | 10 ft base run, 8 in offset, 30°, qty 1 | Mark spacing ≈ 16.000 in | ≈ 10 ft 2.14 in |
| Rolling Offset | 15 ft base run, 6 in rise, 8 in roll, 30°, qty 1 | Resultant offset ≈ 10.000 in | ≈ 15 ft 2.68 in |
| 90° Stub-Up | 8 ft base run, 24 in stub, 3/4 in EMT, qty 1 | Mark from end ≈ 18.000 in | ≈ 10 ft 0.00 in |
| Three-Point Saddle | 12 ft base run, 4 in saddle, 45° center, qty 1 | Outer marks from center ≈ 10.000 in | ≈ 13 ft 8.00 in |
1) Standard offset multiplier:
Multiplier = 1 ÷ sin(angle)
2) Offset mark spacing:
Spacing = Offset height × multiplier
3) Approximate offset travel replaced:
Straight travel replaced = Offset height ÷ tan(angle)
4) Approximate added conduit length:
Added length = Mark spacing − straight travel replaced
5) Rolling offset resultant:
Resultant offset = √(rise² + roll²)
6) Stub-up mark from end:
Mark from end = Desired stub height − take-up
7) Three-point saddle outer mark distance:
Outer mark distance = Saddle height × saddle multiplier
8) Waste-adjusted total:
Waste-adjusted total = Estimated cut length × (1 + waste % ÷ 100)
9) Stick count:
Sticks required = Ceiling(waste-adjusted total ÷ stock stick length)
Shrink factors and take-up values are common field planning approximations. Always verify with your bender, conduit size, and site layout before cutting material.
It estimates bend mark spacing, shrink, take-up, added conduit length, waste-adjusted totals, and stick counts for common EMT layout tasks.
Yes. It uses the standard offset multiplier method electricians commonly apply in layout work. It is practical for planning and quick verification.
The calculator first combines rise and roll into one resultant offset using the square root formula, then applies the selected bend angle multiplier.
Take-up tells you how much the bender effectively adds during a 90° bend. Subtracting it from the desired stub height gives the mark location.
Waste covers field trimming, test bends, layout changes, damaged ends, and installation adjustments. It improves stick ordering accuracy before purchase.
No. It supports planning and estimating. You should still verify measurements, conduit path, bender characteristics, and code-related installation details on site.
Yes. After calculation, use the CSV or PDF buttons to save the result table for job files, estimates, crew notes, or client documentation.
This version supports standard offsets, rolling offsets, 90° stub-ups, and three-point saddles. These cover many common EMT layout situations.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.