Our approach

Small tools, built properly.

4g3n7 tools is a growing collection of calculators, converters and file utilities. We build each tool around one job, explain the method, test the important edge cases and keep the interface out of your way.

Why the unusual name?

4g3n7 is a compact brand for a broad utility bench. The tagline does the important work: free calculators, converters and practical utilities.

How tools are reviewed

Before a tool is published, we check its calculations, units, validation, keyboard operation, mobile layout, metadata and worked example. Tools that are still being developed are not exposed as thin search pages.

Privacy by design

File and text tools run in your browser whenever practical. That means an image, PDF, password or pasted document does not need to travel to our server. Analytics is optional and never includes calculation inputs or file contents.

Corrections

Real utility means being honest about mistakes. If a method or result appears wrong, email hello@4g3n7.com with the tool, input units and expected result.