Joist Hanger Calculator
Estimate joist hangers and approved connector fasteners from joist quantity, supported ends, additional framing connections, waste and package sizes.
Default project preview
2 hanger boxes
Base framing connections
28
Purchased hangers
50
Extra purchased hangers
19
Fastener boxes
2
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Base hangers = joists × supported ends + additional connections. Add the spare allowance and round to boxes. Connector fasteners = ordered hangers × entered fasteners per hanger.
FAQ
Joist Hanger Calculator questions
When are two hangers needed per joist?+
Use two only when both joist ends terminate at supports that require hangers. Many layouts use a hanger at one end and direct bearing at the other.
Can standard deck screws be used in joist hangers?+
Use only fasteners approved for the exact connector and application. Connector capacity depends on the specified fastener type, diameter, length and installation.
Does this choose the correct hanger?+
No. Member dimensions, load, support material, skew, slope and exposure determine the connector selection.