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- 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
- HTML table to JSON array
Th calculator converts the html table code to JSON array with optional data transpose and compression. It also visualizes numeric data on chart.
- List Join
This online calculator can join two csv lists by key column the same way JOIN works in SQL (inner join, left outer join, right outer join)
- 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.
- Relative luminance and contrast ratio
Two calculators evaluate the relative luminance and contrast ratio for given colors.
- 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
