Base64
Encode or decode data to Base64 format.
CSV
CSV ↔ JSON
Convert CSV tables to JSON arrays and back.
[
{
"name": "Alice",
"age": "30",
"city": "Tokyo"
},
{
"name": "Bob",
"age": "25",
"city": "Osaka"
}
]
About CSV ↔ JSON
CSV↔JSON conversion maps tabular CSV to JSON arrays/objects and back—common for APIs, spreadsheets, and data cleaning.
toco.tools supports delimiters and header rows and converts locally in your browser.
Quoted newlines and deeply nested JSON may not round-trip perfectly; very large files can hit memory limits.
How to use
- Paste CSV or JSON
- Set delimiter and headers
- Copy the converted output
FAQ
What is a CSV to JSON converter?
A tool that converts tabular CSV to JSON and JSON back to CSV.
Does it support TSV?
Yes. You can choose tab as the delimiter.
Is uploaded data sent externally?
No. All processing runs in your browser; nothing is sent to toco.tools servers.