convert · data
Convert CSV, Excel and JSON tables online
Convert tables between CSV, TSV, XLSX, and JSON — up to 10 MB, 30 seconds per run, one credit per run (two for XLSX output) after the 20 free runs a day.
result
Press Run. The result lands here, made by the real tool.
1 credit, 2 for XLSX output · ≤10 MB · ≤30 s · no login · 20 free/day
Keys are stored in this browser only. A key lets you buy credits and keep going after the free runs.
How it works
- Choose a file with the file picker and set the target format, delimiter, encoding, and header options.
- Press Run; the tool detects the source format if you leave that field empty, then converts the table.
- Download the converted file and check the reported row count, column count, source format, and encoding.
Limits
Input files up to 10 MB; output up to 30 MB; up to 16 384 columns. Each run completes within 30 seconds or returns an error. You get 20 free runs per day without logging in; after that each run costs one credit (two for XLSX output) drawn from a prepaid credit balance tied to an API key.
Privacy
The input is processed for the request and discarded afterwards; it is not kept or used for anything else. Usage records store only time, tool, status, duration, credits, and a salted hash of the IP.
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Call it from code
curl -sS -X POST 'https://data.voiddo.com/v1/tabular_convert?download=1' \
-F 'input={"to":"json"}' \
-F 'file=@input.csv' \
-o result.csv20 calls a day need no key. Beyond that: one-time credit packs, $5 for 500 credits, $9 for 1,000 credits, $29 for 4,000 credits. Get credits · llms.txt · OpenAPI.
Questions
Do I need an account to use this?
No. You get 20 free runs per day without any login.
Are my files kept after conversion?
No. The input is processed for the request and discarded immediately afterwards.
How do I call this from code?
Send a POST request to https://data.voiddo.com/v1/tabular_convert with your file and options; a curl example is on this page.
What happens once I use all 20 free runs?
After the free runs, each conversion costs one credit (two for XLSX output) drawn from a prepaid balance attached to your API key.
How does the tool handle numbers and dates?
With infer_types enabled on CSV or TSV input to JSON or XLSX output, exact numbers, ISO dates, and true/false values become typed rather than plain text.