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ToolBox

Local productivity tools

LanguageEN

JSON & data

JSON formatter JSON diff JSON path

Encode / decode

Encode / decode Hash JWT decoder String escape

Dev utilities

Timestamp Regex tester Code beautify Base converter CSS units

Generate

UUID generator Password generator QR code Cron explainer

Text

Text tools Markdown preview URL parser

Image & color

Color converter Image Base64

Utilities

22 tools · data stays local

ToolBox

Language

ToolBox
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CSS units

CSS units

px / rem / em with configurable root size

Root font size (html, px)

Target px

px

16px

rem

1rem

em

1em

rem declaration

font-size: 1rem;

px declaration

font-size: 16px;