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Cyrillic, mailto and URL-encoded symbols
This online calculator can generate mailto links with Cyrillic characters.
Hartley Information Calculator
The Hartley Information Calculator determines the amount of information contained in a message with length n using Hartley's formula.
The Phone Number Extractor
The phone number extractor calculator is a useful tool that extracts phone numbers from a large block of text.
Convert RGB integer colours to hexadecimal color code for web
The calculator converts a colour given in RGB integers into a hexadecimal string suitable, for example, for css.
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