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Bitwarden to Mozilla Firefox converter

Bitwarden and Mozilla Firefox both use CSV, but Bitwarden writes 11 columns; Mozilla Firefox expects 3 in a different order — so Firefox rejects a raw Bitwarden export or silently files everything into the wrong fields. Drop your export below and get back a file Firefox accepts.

Convert your Bitwarden export

Drop your Bitwarden CSV here or click to choose a file — nothing is uploaded

The conversion runs entirely in this tab using JavaScript. Your file is never sent to a server — you can confirm it by opening your browser's Network tab, or by turning off Wi-Fi before you drop the file in. Prefer not to do this in a browser tab at all? Download the converter and run it from your own disk.

Your export file is plaintext. Both the file Bitwarden gives you and the one you download here contain every password in readable form. Delete them as soon as the import is verified, and empty your trash.

What's actually different between the two formats

Not one column name matches between the two formats (folder, favorite, type… versus "url", "username", "password"…), which is why a direct import fails.

Bitwarden column	Mozilla Firefox column	What happens
`name`	`— none —`	Firefox has no item name field. Written into notes instead of dropped.
`login_username`	`username`	Renamed and repositioned
`login_password`	`password`	Renamed and repositioned
`login_uri`	`url`	Renamed and repositioned
`login_totp`	`— none —`	Firefox has no 2fa secret field. Written into notes instead of dropped.
`notes`	`— none —`	Firefox has no notes field. Written into notes instead of dropped.
`folder`	`— none —`	Firefox has no folder field. Written into notes instead of dropped.
`favorite`	`— none —`	Firefox has no favorite field. Written into notes instead of dropped.

What carries over

Field	Bitwarden	Firefox	Result
Item name / title	Yes	No	Firefox identifies logins by URL only, so titles are dropped.
Username and password	Yes	Yes	Carried over
Website URL	Yes	Yes	Carried over
Notes	Yes	No	Dropped — the target has no notes field.
Folders / groups	Yes	No	Written into the notes field as "Folder: …" so you can re-sort later.
Two-factor (TOTP) secrets	Yes	No	Written into notes. Re-add them by hand, or keep them in a separate authenticator.
Favorites	Yes	No	Dropped — re-star your important entries after importing.
Custom fields	Yes	No	Flattened into notes as name: value pairs.
Multiple URLs per entry	Yes	No	First URL kept; the rest appended to notes.
File attachments	Yes	No	No CSV export includes attachments. Download them out of Bitwarden separately before you close the account — this is the one thing people lose permanently.

Step 1 — Export from Bitwarden

Open the Bitwarden web vault at vault.bitwarden.com and sign in.
Go to Tools → Export vault.
Choose .csv as the file format (or .json to keep custom fields and multiple URIs).
Enter your master password and select Export vault.

Official instructions: Bitwarden export documentation

Watch out for

Bitwarden prefixes bare domains with http:// on import. If you care about https, put the full URL in the login_uri column.
The free plan allows only two collections in an organization vault — import to your personal vault if your folder count is higher.

Step 2 — Convert it

Drop the file onto the converter above. It parses Bitwarden's layout, maps each field onto the universal record, then writes Mozilla Firefox's exact expected columns — including the empty ones its importer requires and, where the two differ, the right shape for 2FA secrets. You'll see a preview and a list of anything Firefox can't hold before you download.

Rather not put this file in a browser tab connected to the internet? The same converter is available as a single HTML file you can download and open with your network switched off.

Step 3 — Import into Mozilla Firefox

Go to about:logins in Firefox.
Open the ••• menu → "Import from a File…".
Choose the converted CSV.

Watch out for

Firefox has no concept of a title, folder, note or TOTP secret. Entries are identified by URL alone, so an entry name has nowhere to go.
Firefox writes its header names in quotes ("url","username",…). Some importers choke on that; the converter normalizes it.

Step 4 — Verify and clean up

Open ten entries in Mozilla Firefox at random and check them against Bitwarden.
Your folder names were written into each entry's note. Re-sort them however Firefox organizes items.
Sign in to one real site using Mozilla Firefox to confirm autofill works.
Delete both CSV files and empty your trash. If your Downloads folder syncs to iCloud, OneDrive or Dropbox, confirm the deletion propagated there too.
Only then close your Bitwarden account — and change any password you suspect was exposed while the plaintext file existed.

Questions

Why won't Mozilla Firefox import my Bitwarden file directly?

Not one column name matches between the two formats (folder, favorite, type… versus "url", "username", "password"…), which is why a direct import fails. The converter rewrites the file into Mozilla Firefox's exact expected layout, including the column order and any empty columns its importer requires.

Do my passwords get uploaded anywhere?

No. The conversion is JavaScript running in your own browser tab — the file is read with the FileReader API, transformed in memory, and handed back to you as a download. There is no upload, no server-side processing and no analytics attached to the file. You can verify this by disconnecting from the internet before you drop the file in: the conversion still works.

What gets lost moving from Bitwarden to Mozilla Firefox?

Mozilla Firefox can't natively store: item name / title, notes, folders / groups, two-factor (totp) secrets, favorites, custom fields, multiple urls per entry, file attachments. Rather than drop that data, the converter writes it into the notes field where Firefox has one, so you can move it back by hand. Keep your Bitwarden account active until you've confirmed everything you need made it across.

Can I keep my 2FA codes in Mozilla Firefox?

No — Mozilla Firefox has no field for TOTP secrets at all. The converter puts each secret into the entry's note so it isn't lost, but Firefox won't generate codes from it. Move those to a dedicated authenticator app before you shut down Bitwarden, or pick a target that supports them.

Is the export file from Bitwarden encrypted?

No. A Bitwarden CSV export is plaintext — every password in it is readable by anything that can open the file, including other apps on your machine and anything that syncs your Downloads folder to the cloud. Convert it, import it, then delete both files and empty your trash. If your Downloads folder syncs to iCloud, OneDrive or Dropbox, check that the deletion propagated.

Anything unusual about Bitwarden's export?

Bitwarden prefixes bare domains with http:// on import. If you care about https, put the full URL in the login_uri column.

Anything unusual about importing into Mozilla Firefox?

Firefox has no concept of a title, folder, note or TOTP secret. Entries are identified by URL alone, so an entry name has nowhere to go.

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