Number Formatter

Enter any number and instantly see it formatted in multiple ways: locale formats (US, EU), currencies, scientific notation, binary, hexadecimal, words, file size, and more. Copy any format with one click.

60K+ developers trust DevPlaybook Runs 100% in your browser 15+ output formats

Frequently Asked Questions

What number formats does this tool support?

The formatter shows: US and EU locale formats (with thousand separators), scientific notation, percentage, currencies (USD, EUR, GBP, JPY), binary, octal, hexadecimal, number-in-words, file size (bytes/KB/MB/GB), and fixed decimal formats.

How does number-to-words work?

The tool converts integers up to billions into English words. For example, 1,234,567 becomes 'one million, two hundred thirty-four thousand, five hundred sixty-seven'. Decimals are truncated for the words format.

Can I convert a number to hexadecimal?

Yes — integer numbers show binary (base 2), octal (base 8), and hexadecimal (base 16) representations. Negative or non-integer numbers show 'N/A' for these formats since they only apply to non-negative integers.

What is scientific notation?

Scientific notation expresses numbers as a coefficient times a power of 10. For example, 1234567.89 becomes 1.23456789e+6. It's useful for very large or very small numbers in scientific and engineering contexts.

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