Tolerance Calculator
Calculate engineering and manufacturing tolerances with precision
Tolerance Calculation
How to Use This Calculator
Enter Nominal Value
Input the nominal or target value for which you want to calculate tolerances. This is the ideal or specified value.
Select Tolerance Type
Choose between percentage-based tolerance (relative to nominal value) or absolute tolerance (fixed value).
Enter Tolerance Value
Specify the tolerance amount. For percentage type, enter the percentage (e.g., 5 for 5%). For absolute type, enter the fixed tolerance value.
Select Unit
Choose the appropriate unit for your calculation (millimeters, centimeters, meters, inches, or feet).
View Results
The calculator will display the upper limit, lower limit, and tolerance amount for your specifications.
Tolerance Calculation Tips
Tolerance represents the acceptable variation from the nominal value in manufacturing and engineering
Upper limit = Nominal value + Tolerance amount
Lower limit = Nominal value - Tolerance amount
Percentage tolerance scales with the nominal value, while absolute tolerance remains fixed
Choose appropriate tolerance units that match your measurement system
Consider manufacturing capabilities when setting tolerance values
Tighter tolerances increase manufacturing costs and complexity
Always specify tolerances clearly in engineering drawings and specifications
Use statistical process control to monitor tolerance compliance
Consider measurement uncertainty when setting tolerance limits