Do I need to create an account?

No. ToolHive tools are designed for quick copy-paste use without login.

Can I use it on mobile?

Yes. The tool layout is responsive and works on modern mobile browsers.

Runs locally in your browser. Your input is not uploaded to ToolHive.

Convert Unix timestamps to dates and dates back to seconds or milliseconds.

Convert API timestamps to local and UTC time without sending values to a server.

Unix timestamp

Local Time	6/22/2026, 6:33:53 AM
UTC	2026-06-22T06:33:53.000Z

Date/time

Seconds	1782109980
Milliseconds	1782109980000

This tool runs locally in your browser. Your input is not uploaded to ToolHive.

Debug API responses and payloads.

Prepare snippets for documentation or tickets.

Check copied text before sharing it.

More tools from the same category for adjacent workflows.

Data Tools

Encode and decode Base64 or URL text locally.

Handle encoded payloads, query strings, and copied tokens in the browser.

Convert CSV to JSON and JSON to CSV with headers and clear errors.

Transform table data and API fixtures locally before pasting into another tool.