How to Convert CSV to JSON

Quick answer: Convert a CSV table into JSON objects ready for APIs, configs, or test fixtures. Open CSV 转 JSON — everything runs locally in your browser, and files never leave your device.

Steps

1. Upload the .csv or paste rows into the CSV to JSON tool.
2. Confirm the header row supplies the object keys.
3. Toggle type inference for numbers and booleans if you need string types preserved.
4. Download or copy the JSON.

Important notes

• Type inference is a double-edged sword: a product code like 007 becomes the number 7. Turn inference off when identifiers must stay strings.
• Empty cells become null (or empty strings, depending on the option).
• Fields containing commas or newlines must be quoted in the CSV or rows will split incorrectly.

Common questions

How do I get nested JSON? Use dotted column names like address.city to build nested objects.

Which encoding should I use? UTF-8 — especially if any row contains non-English text.