chatgpttoclaude

Upload your ChatGPT export

From

To

ChatGPT → Settings → Data controls → Export data. You'll get a ZIP by email.

Drag & drop your ZIP file history

or click to browse — the ChatGPT export as-is, no unzipping needed

.zip or .json

Your file is analyzed in your browser and only distilled excerpts are processed. Raw conversations are never stored.

What happens after you upload

01

Parsed locally

Your ZIP is unpacked on your device. Only short distilled excerpts leave your browser for analysis — never whole conversations.

02

Free sample first

Before paying anything, you see a working preview built from your three most substantial conversations — judged on your own history, not a demo.

03

One document out

Everything worth keeping — projects, preferences, people, decisions — is merged into a single Markdown file you can copy or download.

A typical export runs end to end in a few minutes, and it works in both directions — ChatGPT → Claude or Claude → ChatGPT, from the export ZIP or a bare conversations.json. The sample is free; the full document is a one-time payment sized by how many conversations you have. See the pricing tiers or browse a redacted sample document before you start.