Fits Calculator

Find the limits of a hole and shaft fit, and how much clearance or interference you will get. Uses the ISO 286 hole-basis system for sizes up to 500 mm.

Inputs

Results

Hole limits
Hole tolerance
Shaft limits
Shaft tolerance
Maximum clearance
Minimum clearance

Values follow ISO 286 for the size ranges up to 500 mm. Check critical fits against the standard or your drawing. Positive clearance means the shaft is smaller than the hole, and negative clearance means interference.