Confluence Migration Duration Estimator

Estimate migration duration per page from your assumptions. This runs fully in your browser, with embedded model values.

This page provides an estimate only. Actual migration times can be lower or higher.

Performance depends on the machine running the migration, network speed and stability, and time of day (including varying vendor-side performance at Microsoft and Atlassian).

Run a test migration for a representative space and verify whether the measured duration matches this estimate before planning at full scale.

Work in progress: model values and assumptions will change.

1) Model

Estimator model

2) Scope

Total content items (pages/blog posts)

Excluding attachments and historical versions.

3) Attachments

Average attachments per page

Attachment size distribution

Small: <256 KB, Mid: 256 KB - 2 MB, Large: >2 MB

Small share (%)

Mid share (%)

Large share auto-calculated:

12%

Transfer speeds

Confluence download speed (KB/s)

SharePoint upload speed (KB/s)

Observed common ranges from last run are used for unusual-value notes.

4) Content complexity per page

Estimated links per page

Estimated images per page

Estimated macros per page

Estimated comments per page

Estimated tables per page

Table size optimization activated

Internal assumed values (when not user-provided)

WordCount: 260 (query: wordCount)
AttachmentsPerPage: user-provided (default: 3)
ImageCount / MacroCount / CommentCount / TableCount: user-provided (defaults: 0)
BrokenLinkCount: round(LinkCount x 15%) (query: brokenLinkShare)
HardLinkShare: 50% (query: hardLinkShare or hardLinkSharePct)
HardPageLinkLookupCount: HardLinkCount x 1 (query: hardPageLinkLookupPerHardLink)
CommentThreadMaxDepth: 0 (query: commentThreadMaxDepth)
SourceTableCount / TableCellCount / NestedTableCount: 0 / 0 / 0 (query: sourceTableCount / tableCellCount / nestedTableCount)
SharePointProvisioningRetryCount / RestrictionCount / ExternalLinkCount / HasWorkflows: 0 / 0 / 0 / 0 (query: sharePointProvisioningRetryCount / restrictionCount / externalLinkCount / hasWorkflows)

5) Result

Estimated duration per page

Derived total for all entered pages

Breakdown (per page)

This estimate is strictly per-page based. Startup overhead (authentication, warm-up, setup checks) is not included in the model output.