Help & Documentation
Learn how to use Unitconvr's tools, API, and widgets
How to Use the Converter
Select Category
Choose from Length, Weight, Temperature, Area, Volume, Speed, or Currency
Enter Value
Type the number you want to convert in the input field
Choose Units
Select source and target units from the dropdowns
Get Results
Results appear instantly with 15 decimal precision
API Documentation
Our free API allows you to integrate unit conversions into your applications.
Single Conversion
GET /api/v1/convertConvert a single value between units
Batch Conversion
POST /api/v1/batchConvert multiple values in one request
List Units
GET /api/v1/units/[category]Get all available units for a category
Embed Widgets
Add unit converters to your website with our customizable widgets.
- 1Visit the Widget Builder tool
- 2Select category and customize appearance
- 3Copy the generated code
- 4Paste into your website's HTML
Frequently Asked Questions
How accurate are the conversions?
All conversions are accurate to 15 decimal places, suitable for scientific and engineering applications.
Is the service free?
Yes, Unitconvr is completely free to use, including the API and widgets.
Can I use this offline?
Unitconvr works as a Progressive Web App (PWA) with offline support for previously visited pages.
Are there API rate limits?
The API allows 100 requests per minute for single conversions and 10-60 requests per minute for other endpoints, per IP address.
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