Miter Joint Length Loss
Calculator

Inputs

Extra length per end (mm)
44.999999

Results

Extra length per end (mm)
44.999999
Extra length, both ends (mm)
89.999999
Outside-to-inside offset (mm)
44.999999

Results

Extra length per end (mm)44.999999
Extra length, both ends (mm)89.999999
Outside-to-inside offset (mm)44.999999

formula-map diagram

Extra length per end (mm)
44.999999
Extra length, both ends (mm)
89.999999
Outside-to-inside offset (mm)
44.999999

Formula map

Formula

Extra length per mitred end = frame width × tan(mitre angle)

= 45

Note

This result is a simplified model; verify against your shop's own tolerances and material data before cutting.

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