Calibration guides
Practical plans for the situations people most often meet in calibration work: starting a system from nothing, taking over a register someone else built, and preparing for the auditor’s questions.
Guides
Inheriting a calibration spreadsheet
A triage plan for the register you just took over from someone who left.
Setting up a system from scratch
The 10-step plan for standing up a calibration program where none exists.
What auditors ask about calibration
The real audit questions, in auditors' own words, and what answers them.
How often should your instruments be calibrated?
The calibration interval reference lists typical starting intervals for 68 instrument types, the range seen in practice and 236 verified sources, as an open CC BY 4.0 dataset with CSV and JSON downloads.
Calibration intervals are a risk-based decision for the instrument owner: guidance documents such as ILAC-G24 and OIML D 10 describe how to set and adjust them. Use the numbers as starting points, not compliance requirements.
Free tools
Calibration certificate generator
Fill in a certificate of calibration in the browser and download a print-ready PDF.
Calibration log template
A free Excel instrument register with computed next-due dates.
Calibration certificate template
The same certificate fields as an Excel file, with a completed example.
The interval is the easy part. Keeping 200 of them is not.
Gaugelog is calibration management software for quality managers who’ve outgrown Excel: instrument register, schedules, due-date alerts and certificates in one place. Free up to 30 instruments, no credit card, no demo call.