Add or Subtract Days
Move a calendar date forward or backward.
Date & time
Processed on your device
MADE FOR THE EVERYDAY
All tools
Useful tools in your browser.
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All tools
AES Decrypt
Authenticate and decrypt a LocalKit AES-256-GCM JSON envelope with its password.
Security
AES Encrypt
Encrypt UTF-8 text with AES-256-GCM and a password-derived PBKDF2-SHA-256 key. Every run uses a fresh salt and nonce.
Security
Age Calculator
Calculate completed years, months and days between a birth date and a reference date.
Date & time
Anagram Checker
Compare letters and numbers after Unicode normalization, ignoring spacing and case.
Text
Angle Converter
Convert angle units with selectable source and target units and precise local results.
Units
Apache Config Editor
Edit Apache Config source locally with syntax colors, line numbers, find and replace, undo, file import and download. Source is not executed.
Developer
Archive Contents Viewer
Browse and search file paths inside ZIP, TAR and TGZ archives. Select files to download locally.
Archives
Area Converter
Convert area units with selectable source and target units and precise local results.
Units
ASCII Converter
Inspect Unicode code points, ASCII membership and decimal/hex values.
Developer
Aspect Ratio
Reduce a width and height to their simplest ratio.
Calculators
Average & Statistics
Calculate mean, median, range and population standard deviation.
Calculators
Average Image Color
Calculate the alpha-weighted arithmetic mean of sRGB channels and report its HEX color.
Images
Base64 Decode
Decode Base64 text with UTF-8 support and local processing.
Developer
Base64 Encode
Encode Base64 text with UTF-8 support and local processing.
Developer
Binary Decode
Decode Binary text with UTF-8 support and local processing.
Developer
Binary Encode
Encode Binary text with UTF-8 support and local processing.
Developer
Border Radius Generator
Adjust each corner with sliders and preview the resulting CSS border radius.
Color
Box Shadow Generator
Shape a shadow with a live preview and ready-to-use CSS.
Color
Browser Information
Read browser, language, platform and secure-context information reported by this tab.
Browser
Browser Language Viewer
View the browser language and ordered language preferences.
Browser
Business Days
Count Monday–Friday dates from the start date inclusive to the end date exclusive, excluding your holiday list.
Date & time
Bytes to Text
Decode decimal bytes as strict UTF-8. Invalid byte sequences are rejected.
Developer
C Editor
Edit C source locally with syntax colors, line numbers, find and replace, undo, file import and download. Source is not executed.
Developer