kp2bw -- KeePass 2.x to Bitwarden Converter

This repository is no longer under active development by the original maintainer.

The project has been forked and is actively maintained at kjanat/kp2bw (v3.7.0+, Python >=3.14). The fork uses bw serve HTTP transport instead of the subprocess-based approach in this version, supports nested collections, proper org/collection item creation, and ongoing bug fixes. New users should use the fork.

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kp2bw converts KeePass 2.x databases to Bitwarden using the Bitwarden CLI.

Compared to Bitwarden's built-in importer:

• Data never touches disk unencrypted (except temporary attachment files, which are removed after upload)
• Resolves KeePass {REF:...} entries (username, password) -- matching entries get merged URLs; non-matching entries are created separately
• Custom properties imported as Bitwarden custom fields; values over 10,000 characters become attachments
• Attachments imported from KeePass
• Notes over 10,000 characters imported as notes.txt attachment
• Idempotent import -- re-running does not duplicate entries
• Nested folder structure recreated in Bitwarden
• Entries imported one by one to avoid Bitwarden query timeout on large databases
• UTF-8 support
• Windows, macOS, Linux

Installation

Requires Python >=3.9 and pip.

python -m venv .env/kp2bw
source .env/kp2bw/bin/activate   # Windows: .env\kp2bw\Scripts\activate
pip install .

Usage

Prerequisites

Install the Bitwarden CLI and log in:

bw login <username>

For self-hosted instances, set the server URL first:

bw config server https://your-domain.com/

Import

kp2bw passwords.kdbx

Options

Flag	Description
keepass_file	Path to KeePass 2.x database
-kppw	KeePass database password
-kpkf	KeePass database key file
-bwpw	Bitwarden master password
-bworg	Bitwarden Organization ID
-bwcoll	Organization Collection ID, or auto to match by top-level folder name
-import_tags	Only import items with given tags (space-separated)
-path2name	Prepend folder path to entry names
-path2nameskip	Skip first N folders when using -path2name (default: 1)
-y	Skip Bitwarden setup confirmation
-v	Verbose output

Troubleshooting

Invalid master password on unlock

DEBUG: -- Executing command: bw unlock My?Master>>Password123 --raw
DEBUG:   |- Output: b'Invalid master password.'

Wrap the password in double quotes at the password prompt. The bw unlock command does not handle shell special characters in unquoted input.

License

MIT. Copyright Daniel Jampen.