`"Joist count" = f( W , L , 16 )`

Enter a value for all fields

The Floor Joist Hanger Count calculator  computes the number of joist hangers required to hang joists or i-joists for a floor or deck based on the dimension of the room or deck and the on-center joist separation.

Floor Joist Hanger Count Instructions

1. (W) -  Enter the width of the floor across the joists
2. (L) -  Enter the length of the floor parallel to the joists
3. (oC) - Enter the On-center Separation distance between joists

Floor Joist Hanger Count: The calculator computes the total number of hangers needed for the joists.  

The Math / Science

The algorithm assumes two hangers per joist, one on each end, and that none are needed for the end plates.   

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