Clearance Hole Calculator
Result
Clearance Hole Calculator: calculate resulting hole diameter (mm) from the supplied inputs.
Formula
- Model: nominal bolt diameter + selected diametral clearance. User-selected diametral clearance only; not an ISO/ASME lookup or fit recommendation. Both input values must be nonnegative. This is an arithmetic estimate, not an individualized professional decision.
- The main inputs are Bolt nominal diameter, Diametral clearance. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Clearance Hole
- Bolt nominal diameter: 10 mm
- Diametral clearance: 1 mm
Using Bolt nominal diameter (mm) = 10, Diametral clearance (mm) = 1, result: Resulting hole diameter (mm) = 11.
Sample result: Calculating…
Frequently asked questions
What does the Clearance Hole calculate?
Clearance Hole Calculator: calculate resulting hole diameter (mm) from the supplied inputs.
Which values should I enter?
Enter Bolt nominal diameter, Diametral clearance using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: nominal bolt diameter + selected diametral clearance.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.