ISO 286 fit calculator
Limits, clearance and interference for any hole/shaft fit. Results update as you type.
Unit
Result
Ø25.000 H7/g6Clearance fit
| Upper | Lower | Max | Min | Tol. | |
|---|---|---|---|---|---|
| Hole H7 | +0.021 | 0 | 25.021 | 25.000 | |
| Shaft g6 | −0.007 | −0.020 | 24.993 | 24.980 |
- Max clearance
- 0.041 mm
- Min clearance
- 0.007 mm
- Mean
- +0.024 mm
Fit diagram (µm · zero line = nominal)
Hole tolerance zoneShaft tolerance zoneClearance
How it works
Enter the nominal size and pick a hole and shaft tolerance class. The calculator looks up the standard tolerance (IT grade) and fundamental deviation from ISO 286-1:2010, computes the limit deviations for both parts and derives the maximum and minimum clearance or interference. The diagram shows both tolerance zones against the zero line.