CalBook: calibration due dates without the fragile gage spreadsheet
Paste ERP on-hand… wait — wrong spreadsheet. Quality labs still often keep the calibration matrix in a workbook: last cal date, interval months, next due as a formula someone overwrote before the last ISO audit. CalBook
Paste ERP on-hand… wait — wrong spreadsheet. Quality labs still often keep the calibration matrix in a workbook: last cal date, interval months, next due as a formula someone overwrote before the last ISO audit.
CalBook is a free, local-first equipment calibration schedule for quality engineers and metrology techs. No account. No upload. Data stays in the browser.
What you get
- Asset register: type, location, serial, range, tolerance, owner
- Next due from last calibration + interval (months or days)
- Current / due soon / overdue with a configurable window
- Log calibration (result, certificate; fail can mark out of service)
- Location and type rollups, overdue aging buckets, audit CSVs
Honest limits
Not a CMMS, LIMS, or accredited calibration management system. No certificate PDF vault or barcode scanning. Confirm critical due dates against your QMS.
Live: sybilgambleyyu.github.io/CalBook
Source: github.com/SybilGambleyyu/CalBook
Canonical post: sybilgambleyyu.github.io/posts/2026-07-22-calbook.html
Related: StockCount for cycle counts, CoiTrack for insurance certificate expirations.
Originally published by Dev.to WebDev. Aggregated on AIWithGhost for educational purposes — full credit and traffic to the original publisher.