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Converters

Number Converters

Binary, decimal, hex and octal conversions, Roman numerals and number to words for cheques.

15 converters · free · no upload

Number to WordsNumbersNumber System ConverterNumbersBinary to DecimalNumbersDecimal to BinaryNumbersRoman NumeralsNumbersBinary to OctalNumbers

Popular tools 3

Number to WordsNumbersNumber System ConverterNumbersRoman NumeralsNumbers

Number base converters 12

Binary to DecimalNumbersDecimal to BinaryNumbersBinary to OctalNumbersBinary to HexadecimalNumbersOctal to BinaryNumbersOctal to DecimalNumbersOctal to HexadecimalNumbersDecimal to OctalNumbersDecimal to HexadecimalNumbersHexadecimal to BinaryNumbersHexadecimal to OctalNumbersHexadecimal to DecimalNumbers

About number converters

Binary, decimal, hex and octal conversions, Roman numerals and number to words for cheques. Every tool on this page runs directly in your web browser, which means your files and data are never uploaded to a server. That makes the converters faster, private and usable even with a weak connection.

Each converter has its own page with step-by-step instructions, explanations of the formats or units involved, comparison tables and answers to common questions, so you can understand the result — not just get it.

Are these number converters free?

Yes, all 15 tools are free with no sign-up or limits.

Do I need to install anything?

No. Everything works in your browser. You can optionally install the site as an app for quick access.

Which is the most popular numbers converter?

Number to Words, Number System Converter, Binary to Decimal are used the most.