Murphy Bed Hardware Calculator

Calculate gas piston force, stroke length, and hardware requirements for a Murphy wall bed based on mattress weight and bed dimensions.

Mattress weight (lbs)

Bed frame / platform weight (lbs)

Bed length (in)

Bed width (in)

Number of gas pistons

Piston mount from pivot (in)

Lift assist factor (%)

Tab to move between fields

Required force per piston (lbs)

269.5

Total torque at pivot (lb-in)3,750

Piston stroke length (in)41

Piston extended length (in)70

Total bed weight (lbs)100

Estimated hardware cost ($)$150

Wall load with safety factor (lbs)150

Minimum stud anchors needed2

Size ClassFull

How to Use This Calculator

Enter Mattress Weight and Bed Frame/Platform Weight in pounds for the total folding load.
Enter Bed Length and Bed Width in inches and the Number of Gas Pistons.
Enter the Piston Mount Distance from the pivot and your desired Lift Assist Factor percentage.
Review Required Force Per Piston in pounds to select appropriately rated gas struts.
Check Minimum Stud Anchors and Wall Load with safety factor to ensure safe wall mounting.

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