- Base 64 encoding and decoding
The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.

- Count the number of words
The calculator counts word number in a given text. It can be used for rough calculation of translation cost. Can be used for word number calculation in software resources.

- Email extractor
This online calculator parses emails from block of text using regular expression

- GET request string parser
This parser break GET request string to the parameter-value pairs and decodes URL-encoded sequences, if needed

- List format
Format a list using regular expressions

- LL1 grammar analysis. Yet another top-down parser generator.
The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code.

- Palette generator
This calculator generates palette of colors from starting color to ending color, using maximum diversity, "rainbow" style.

- RAID arrays сalculator
This calculators shows the possible variants of RAID arrays, based on the number of drives available.

- RGB - HSV and HSV - RGB converter
This calculator converts RGB color to HSV color and vise versa

- Simple math in any numeral system
This online calculator supports simple math (addition, subtraction, division, multiplication and power) for numbers expressed in any numeral system - binary, octal, hexadecimal, from the base 2 to base 36

- URL-encoded string decoder
This converter decodes URL-encoded string (percent-encoded characters). It converts reserved characters as well as UTF-8 characters

- Request a calculator
- Please help our project by suggesting an idea for a new calculator.