Free · No signup · Files deleted after 1h
Excel to JSON
Converter
Turn spreadsheet rows into developer-ready JSON — one object per row, keys from your header row.
Convert XLSX to JSON free →No account needed · Up to 25 MB free · Files permanently deleted after 1 hour
Made for code
Each row becomes {"column": value} using your header row as keys — paste it into a script, an API fixture or a database seed without writing a parser.
Multi-sheet aware
One sheet returns a plain array. Multiple sheets return an object keyed by sheet name — nothing silently dropped.
Private & secure
Uploaded over HTTPS, processed on EU servers, never shared with third parties, and permanently deleted after 1 hour. Never used to train AI.
How it works
1
Upload your XLSX
Drag and drop the workbook (.xls works too).
2
Choose JSON
JSON is one click away in the format picker — CSV and PDF are there too.
3
Download the JSON
Pretty-printed UTF-8, ready to commit or import.
Common questions
What does the JSON structure look like?
A single-sheet workbook becomes an array of objects — one per row, with keys taken from the first (header) row. Empty cells come through as null so row shapes stay consistent.
Are formulas evaluated?
You get each cell's last calculated value — the number you see in Excel — not the formula text.
Can I automate this?
Yes — the same conversion is one POST call on the REST API, on every plan including Free (250 credits/month). See the API docs.
Is there a file size limit?
Free users can convert files up to 25 MB without an account. Pro raises that to 500 MB per file with 3,000 credits a month; Business goes to 5 GB.