Easy Offset is an easy to use program designed for the HVAC industry that calculates cut joints, elbow centerlines, and overall lengths for offsets of any angle.

Saves time:
-faster than using a calculator
-improved accuracy
-no multipliers or trig formulas to remember
-reduces errors
-minimizes cutting in the field and wasted material
-use any angle
-useful for field layout and detailing

Types of Offsets:
-round elbows
-rectangular elbows with radius heel and throat
-rectangular elbows with straight heel and throat
-round taps on an angle
-rolled nineties
-wye branches

What’s New

Version 1.2

Additional tools have been added:
-arc length calculator
-trigonometry calculator
-mitered duct calculator (owl)
-fractional output
-round and rectangular equivalents with friction loss

Ratings and Reviews

4.3 out of 5
18 Ratings

18 Ratings

Duct god ,

Duct guy

Please update app! It’s a life saver!!! The only reason I am giving it 4 stars is because it won’t work on my phone anymore!! I hope they fix this! I’d pay for it if I had to!!!

Ltlaforge ,

It’s worth it!!!!

I’ve done several exposed spiral jobs where the pipe needed to stay slammed to the deck and drop at the last second for the perpendicular run. Of course Once you know your measurements/radius’s and allowances this is sooooo easy to use and layout with. I finished the whole floor before one side of the building was tossed up.

Thank you for updating to 64bit. Just a thought though update the author email address, no one ever answered my emails.

I lab AGC ,

Dear Allen,

Can you make it so we can fill in the cut joint length,
Centerline length, and overall length?

Developer Response ,

Yes, I’ll try to add it on the next update.


Allen Sieler
34.8 MB

Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Allen Sieler


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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