Free calibration tools & calculators
Free calibration calculators for everyday decisions. They run in your browser and each one is checked against worked examples from official sources.
- TUR calculatorTest uncertainty ratio, TAR and false-accept risk✓ Validated against 58 worked examples from Global ACI-TECH-1-002 (formerly ILAC G8), JCGM 106 and NASA
- Measurement uncertainty calculatorFree uncertainty budget with Welch–Satterthwaite✓ Validated against 105 checks from EA-4/02, the GUM, UKAS M3003 and JCGM GUM-5 worked examples
- Gauge R&R calculatorANOVA and average & range, free and validated✓ Validated against the AIAG MSA example as published by Minitab (ANOVA) and SPC for Excel (average and range)
- Calibration label & sticker generatorFree, printable, any status✓ Due dates checked against the documented month-end convention (python-dateutil) and Excel EDATE examples; sheet positions taken from Avery's official templates
Runs in your browser
Nothing you type is sent anywhere.
Checked against official examples
Each calculator has automated tests built from worked examples in the source documents.
Shows its work
Every result comes with the formula and the steps.