How do I convert NDJSON / JSON Lines to CSV?

Upload your NDJSON / JSON Lines file above, click Convert, and download the CSV result instantly. No account or software needed.

Is converting NDJSON / JSON Lines to CSV free?

Yes. It is free and unlimited for files up to 5 MB, with no account required. Larger files get 3 free conversions per day; beyond that, credit packs start at $3 and credits never expire.

Are my files stored or shared?

No. Files are processed in server memory and deleted immediately after conversion. File contents are never written to disk or retained.

Do I need to install anything?

No software installation needed. OmniConvert runs in the browser — just upload, convert, and download.

OmniConvert

Convert NDJSON to CSV

Free

Convert a newline-delimited JSON (JSON Lines) file to CSV

Drop a file or click to browse

Accepted: .ndjson,.jsonl,.txt

or paste below

Free and unlimited for files up to 5 MB. No account needed.

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About this conversion

Convert a newline-delimited JSON (JSON Lines) file to CSV. This converter processes your NDJSON / JSON Lines file server-side and returns a CSV file instantly — no account, no software installation, and no file storage. Files are deleted from our servers immediately after conversion.

How to convert NDJSON / JSON Lines to CSV

1. Upload — drag your NDJSON / JSON Lines file onto the converter above, or click to browse.
2. Convert — press Convert. Processing happens on secure servers in seconds.
3. Download — your CSV file downloads automatically. No sign-up required.

Convert NDJSON / JSON Lines to CSV from the command line

curl --fail-with-body \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -F "file=@input.ndjson" \
  -F "conversionId=ndjson-to-csv" \
  https://www.omniconvert.cloud/api/convert -o output.csv

The API needs a token from a credit pack, and each API conversion uses one credit. Converting on this page stays free. API documentation

Frequently Asked Questions

How do I convert NDJSON / JSON Lines to CSV?: Upload your NDJSON / JSON Lines file above, click Convert, and download the CSV result instantly. No account or software needed.
Is converting NDJSON / JSON Lines to CSV free?: Yes. It is free and unlimited for files up to 5 MB, with no account required. Larger files get 3 free conversions per day; beyond that, credit packs start at $3 and credits never expire.
Are my files stored or shared?: No. Files are processed in server memory and deleted immediately after conversion. File contents are never written to disk or retained.
Do I need to install anything?: No software installation needed. OmniConvert runs in the browser — just upload, convert, and download.

No account needed · Credits never expire · Share your token link across devices