Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Basic coordinate deviation only. Datum fitting, MMC/LMC bonus, form error and inspection uncertainty are not evaluated.
Example Calculation
- Nominal x: 10 mm
- Nominal y: 20 mm
- Measured x: 10.03 mm
- Measured y: 20.04 mm
Nominal x = 10 mm; Nominal y = 20 mm; Measured x = 10.03 mm; Measured y = 20.04 mm. Primary result: 0.1.
Frequently asked questions
How do I use this calculator?
Enter nominal x, nominal y, measured x, measured y. The result updates automatically. Use Reset to restore the example values.
What method does it use?
diametral deviation=2 √(Δx²+Δy²).. Basic coordinate deviation only. Datum fitting, MMC/LMC bonus, form error and inspection uncertainty are not evaluated.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.