How to Convert Excel to JSON (Free, for Developers)

Clients send data in Excel; code wants JSON. Converting Excel to JSON turns a spreadsheet into an array of objects your app can actually use — for API payloads, database seeds or front-end data. Here's the fast, private way to convert Excel to JSON.

Convert Excel to JSON instantly

Open the Excel to JSON converter, upload your .xlsx file, and click Convert to JSON. Each row becomes an object keyed by the header row, ready to copy or download. It all runs in your browser — nothing is uploaded.

What the output looks like

A sheet with headers name, age and two rows becomes [{"name":"Asef","age":28},{"name":"Sara","age":31}]. Clean, valid JSON you can paste straight into code or an API tester.

Only have a CSV?

Same result from a comma-separated file: use the CSV to JSON converter, or the TSV to JSON tool for tab-separated data copied from a spreadsheet.

Turn JSON into TypeScript types

Once you have the JSON, generate matching TypeScript interfaces automatically with the JSON to TypeScript tool — a huge time-saver when typing API responses.

Related

Need a spreadsheet back from JSON? Use JSON to Excel. Validate or tidy your JSON with the JSON formatter.