ISO 9001 audit days: ISO Audit Duration Table
The ISO Audit Duration Table carries 3 published figures read from 2 sources' own pages, from 1.50 to 3 day, read 12 September 2026.
2 of the 12 named sources read in full publish a figure; 10 publish none, read 12 September 2026.
Every figure, with its source
One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.
| Source | Figure | Read |
|---|---|---|
| AUVA Certification - audit time calculation for ISO 9001 | 3day | 2026-09-12 |
| IAF MD 5:2023 (Determination of Audit Time of QMS and EMS) | 2.5day | 2026-09-12 |
| IAF MD 5:2023 (Determination of Audit Time of QMS and EMS) | 1.5day | 2026-09-12 |
The sentence each figure was read from (3)
- AUVA Certification - audit time calculation for ISO 9001, read 2026-09-12:
By applying the above table, we would quote 3 days for the initial assessment (Stage 1 and Stage 2), 1 day for a surveillance visit and 2 days for a reassessment.
- IAF MD 5:2023 (Determination of Audit Time of QMS and EMS), read 2026-09-12:
1 attracting 2.5 days.
- IAF MD 5:2023 (Determination of Audit Time of QMS and EMS), read 2026-09-12:
1 attracting 1.5 days.
Read in full, publishes no figure
10 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.
- ISO/IEC 27006-1:2024 catalogue entry, read 2026-09-12: read in full and no accepted figure on the page
- IAF - what type of documents does IAF publish, read 2026-09-12: read in full and no accepted figure on the page
- UKAS - certification body accreditation, read 2026-09-12: read in full and no accepted figure on the page
- UKAS - certification body accreditation publications, read 2026-09-12: read in full and no accepted figure on the page
- Alinex - ISO 45001 certification cost UK 2026 guide, read 2026-09-12: every candidate on the page was refused
- UniCert - how to get ISO 9001 certified in the UK, read 2026-09-12: read in full and no accepted figure on the page
- The 9000 Store - calculating audit time, read 2026-09-12: read in full and no accepted figure on the page
- ExpertSure - ISO 9001 certification UK, read 2026-09-12: every candidate on the page was refused
- IAF MD 22:2023 (application of ISO/IEC 17021-1 for OH&S), read 2026-09-12: read in full and no accepted figure on the page
- the mandatory document per standard, read 2026-09-12: read in full and no accepted figure on the page
Methodology
Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).
2 of the 12 named sources that could be read published a usable figure; 10 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere.
The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in day (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 12 candidate sentence(s) were refused by a reviewer with the reason recorded.
The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): One row per standard per effective-personnel band: the audit days the accreditation rules require (IAF MD 5 for QMS and EMS, IAF MD 22 for ISO 45001, ISO/IEC 27006-1 for ISMS), the Stage 1 share, the surveillance and recertification fractions, multiplied by the day rate the price index measures - so the site can show a buyer the arithmetic behind a quote instead of a range.
The derivation nobody publishes is the JOIN: rulebook days x measured UK day rates, per band, with the spread between the cheapest and dearest body priced in days rather than in adjectives.
12 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.
Sources (12)
- ISO/IEC 27006-1:2024 catalogue entry(the publisher's own terms; quoted for reporting and comment)
- IAF - what type of documents does IAF publish(the publisher's own terms; quoted for reporting and comment)
- UKAS - certification body accreditation(the publisher's own terms; quoted for reporting and comment)
- UKAS - certification body accreditation publications(the publisher's own terms; quoted for reporting and comment)
- AUVA Certification - audit time calculation for ISO 9001(the publisher's own terms; quoted for reporting and comment)
- Alinex - ISO 45001 certification cost UK 2026 guide(the publisher's own terms; quoted for reporting and comment)
- UniCert - how to get ISO 9001 certified in the UK(the publisher's own terms; quoted for reporting and comment)
- The 9000 Store - calculating audit time(the publisher's own terms; quoted for reporting and comment)
- ExpertSure - ISO 9001 certification UK(the publisher's own terms; quoted for reporting and comment)
- IAF MD 5:2023 (Determination of Audit Time of QMS and EMS)(the publisher's own terms; quoted for reporting and comment)
- IAF MD 22:2023 (application of ISO/IEC 17021-1 for OH&S)(the publisher's own terms; quoted for reporting and comment)
- the mandatory document per standard(the publisher's own terms; quoted for reporting and comment)
Cite or embed this figure
The ISO Audit Duration Table carries 3 published figures read from 2 sources' own pages, from 1.50 to 3 day, read 12 September 2026.
2 of the 12 named sources read in full publish a figure; 10 publish none, read 12 September 2026.
Cite as: "isocertificationcost.co.uk ISO Audit Duration Table", updated 2026-10-18, https://isocertificationcost.co.uk/datasets/iso-audit-duration-table/.
Download the CSV (3 rows, computed 2026-10-18)