CSV ↔ JSON

What it does

Converts data between CSV and JSON in both directions: the everyday chore of moving a spreadsheet into an API payload, or an API response into something a spreadsheet opens.

How it works

1. Open the tool and provide a CSV or JSON file.
2. Pay $1: by card, or with x402 if you’re an AI agent. No account, no signup.
3. Get the same data converted to the other format back, right away.

Prefer to do it yourself?

You can script this with a few lines of Python or a dev tool. This is the no-setup version for when you just need the conversion done once.

Why it’s worth $1

The free options are either fiddly or sketchy: half of them want you to upload a private file to a server you’ve never heard of, behind a wall of ads. We don’t. There’s no account, no signup, and your file isn’t stored or reused after the job runs. You pay a dollar, you get the result, and that’s the whole relationship.

Frequently asked

Which direction does it go?

Both: CSV to JSON and JSON to CSV.

Does it handle nested data?

It handles the common flat and lightly nested shapes that map cleanly between the two formats.