If you're moving off Asana because the free plan now caps out at 2 users with zero automations, here's the part nobody mentions before you start: exporting your own project data requires a paid Asana plan, and there's no native tool that imports Asana data into Trello, only the reverse. Budget an actual weekend for this move, not an afternoon between client calls.
Why this migration takes longer than switching plans usually does
Asana's CSV export isn't available on the free Personal plan. You need to be on Starter, which runs $10.99 per user per month billed annually, just to get your own tasks out the door (source: usecarly.com, How to Export Asana to Excel, checked August 2026). If you were already priced out onto free because your team grew past 2 people, that's an awkward catch: you may need to pay for one billing cycle of Asana specifically to leave it cleanly. Even once you're exporting, it's a project-by-project process. There's no single button that pulls your whole workspace at once; workspace-wide exports require the Asana API or a third-party tool like Bridge24 (source: usecarly.com, checked August 2026).
What actually exports, and what quietly doesn't
The CSV includes task names, dates, assignees, tags, custom fields, section placement, and subtask counts. It does not include comment history at all, and attachments export as filenames or links only, not the files themselves (source: usecarly.com, checked August 2026). Dependencies show up as raw task IDs rather than linked relationships, so a CSV alone won't tell you which task was blocking which. Custom fields technically transfer, but option colors are lost and any mismatch between a column's values and an existing field's options breaks the mapping on import (source: Asana Community Forum, Things You Did Not Know About CSV Export and Custom Fields, checked August 2026). None of this is a dealbreaker, but it means you're reviewing the export by hand, not just uploading it and walking away.
Why there's no shortcut straight into Trello
Asana actually publishes an importer for pulling data in from Trello, called Migrator.xyz (source: asana.com/apps/migrator-xyz, checked August 2026). The reverse direction doesn't exist as a first-party tool from either company. Trello also has no native CSV import built into the product itself; you need a Power-Up such as Excelefy or Import to Trello by Blue Cat to turn a spreadsheet into cards (source: Trello Power-Up marketplace listings for Excelefy and Import to Trello by Blue Cat, checked August 2026). That's an extra install and a column-mapping step before a single card exists on your new board. It's worth the detour, though: Trello's free plan covers 10 collaborators, 10 boards per workspace, and 250 automation runs a month, which is real headroom compared to Asana's 2-user, zero-automation free tier you're leaving behind.
The actual steps, in order
Export each Asana project to CSV individually from the project's Export menu. Open every export and manually note which tasks had dependencies before that information gets flattened into unreadable task ID numbers. Install a CSV-import Power-Up on your new Trello board and map columns to card fields, treating custom fields as a manual re-check rather than trusting the automatic match. Re-upload any attachments that matter since only the link or filename carried over. Recreate anything from the comment threads you'll actually need again, since none of it exported. Last, rebuild your automation rules from scratch in Trello's Butler, because Asana Rules and Butler are entirely different systems and nothing about them transfers.
| What you're moving | Exports from Asana? | Arrives in Trello automatically? |
|---|---|---|
| Task names, dates, assignees | Yes, via CSV | Yes, once mapped through a CSV Power-Up |
| Custom fields | Yes, with strict value matching | Only if values match exactly during mapping |
| Dependencies | Only as raw task IDs | No, rebuild manually |
| Subtask hierarchy | Flattened into separate rows | No, rebuild manually |
| Attachments | Filenames or links only | No, files must be re-uploaded |
| Comments | Not included | No, lost entirely |
| Automation rules | Not exportable at all | No, Butler rules built from scratch |
Nothing in that table is a reason to stay on Asana if the per-user pricing no longer works for you. It's a reason to plan the move as a real task with its own line item, not something you squeeze in during a slow afternoon.
FAQ
Can I export my Asana data if I'm still on the free plan? No. CSV export requires Starter or a higher paid tier, so you may need to pay for one billing cycle specifically to get your data out cleanly before switching.
Will my task dependencies carry over to Trello? No. Dependencies export only as raw task ID numbers, not as linked relationships, so write down any critical sequencing before you export or it becomes unreadable in the CSV.
What happens to attachments and comments during the move? Attachments export as filenames or links, not the actual files, so anything you need has to be re-uploaded by hand. Comment history isn't included in the export at all.
Is there a faster way than doing this manually? A CSV-import Power-Up like Excelefy speeds up getting cards onto the board, but re-checking custom field mappings and rebuilding automation rules still has to happen by hand either way.
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