Suggest a tool

Tell us what tool you wish existed. We build one every week from real user requests.

Build smarter.

Door / Window Header Beam Sizer

Estimate a header for a door or window opening in a bearing wall.

Result

Bending moment

86400 in·lb

S req

54.5 in³

Recommended

5-1/4 x 14 LVL

About this tool

Enter opening width, load, and material — returns a stock LVL, glulam, or dimensional lumber option. A direct response to r/HomeImprovement and r/Carpentry 'what size header for a 12 ft garage door' questions.

Related tools

More engineering you might find useful.

Floor & Ceiling Joist Span Estimator

Quick-check a wood joist or TJI against span tables.

Deck Post & Footing Sizer

Sizing for deck posts, footings, and beam spans per IRC.

Euler Column Buckling Load

Compute critical buckling load for a fixed/pinned steel or wood column.

Other categories

Looking for something different? Browse the rest of the catalog.

Sponsored suggestions

Some links below are affiliate links. We may earn a commission if you purchase through them, at no extra cost to you.