SMART Metal
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Smart MetalField tools & trade know-howVol. 012026
Sheet MetalHVACFabricationIss. 01  ·  SM Offset

Sheet MetalMade Easy.

Offsets, material take-offs, duct sizing — the field math, worked out on your phone in fractions. Built by a sheet-metal worker, not a software company.

Download on theApp Store

Free on the App Store

Ø8″  R4″  45°→ 20″26 GA Galv
A two-elbow offset run in round spiral duct, assembled on a concrete shop floor in raking window light.Plate I  ·  Spiral offset, 8″ Ø
SM Offset on iPhone showing a two-elbow offset drawn to scale, with a cut joint of twenty-one and eleven sixteenths inches.
01See It WorkP. 02

Your Cut,
In Seconds.

Pick the fitting, punch in your measurements, and the exact cut length draws itself — live, to scale, right on your phone.

Get Offset Free on the App Store
26-5/8″OFFSET LEN20″OFFSET21-11/16″CUT JOINTØ 8″ / W45°R 4″DWG R-01 · 1 SQ = 1″45° ELL × 2 · 26 GA GALV1 SQ = 1″ · 45° ELL × 2 · 26 GA GALV

Drag to pan the drawing

The same two-elbow offset as it appears in the SM Offset app, with pipe diameter, throat radius and fitting angle inputs below the drawing.
Fig. 01Two-elbow offset, drawn to scale  ·  1 sq = 1″  ·  ~10s demo
No more math on a piece of cardboard.
Ch. 01 · See It Work
02Core ToolsP. 04

Run the Numbers

[ 03 Tools Live ]

Three free tools, one measuring tape. Fan through the sheets.

SM Offset round duct screen.
SM Offset rectangular duct screen.
01New

Offset Calculator

Travel, run, and cut lengths for offsets of any angle — with a live diagram, in fractions, on any phone. Free.

Get the App
02Tool

Material Calculator

Enter your duct specs and get a materials take-off — screws, rod, sealer, gasket — ready to copy and send to your supplier.

Open Tool
03Tool

Ductulator

Can't fit the original size? Enter your constraint and get the top 5 equivalent rectangular duct sizes that still hit the required CFM.

Open Tool
Swipe the sheets
Fig. 02By the numbersP. 06
40+

Years in the trade behind the math

3

Free field tools — offsets, material take-offs, duct sizing

1/16″

Fraction precision, every cut

03Coming UpP. 07

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Get the Count Right the First Time.

No more shorting the truck or over-ordering. Spec it, calculate it, send it.

Open the CalculatorOr get SM Offset on iPhone
Stay in the Loop  ·  Card No. 01

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