Number Formatter
Format numbers with commas, decimals and currency formatting.
Input
Output
About Number Formatter
Format numbers with thousands separators, decimal places, and currency symbols. Perfect for financial and statistical data.
Common Use Cases:
- Formatting financial numbers
- Adding thousands separators
- Currency formatting
- Statistical data formatting
Frequently Asked Questions
The formatter accepts integers, decimals, negative numbers, and numbers with commas (e.g., 1,234,567.89 — the commas are stripped before processing). Very large numbers (billions, trillions) and very small decimals are supported. Scientific notation input (e.g., 1.5e6) is also accepted. The tool displays the number in 14 different formats including locale-formatted, binary, hex, octal, and word form.
These are different number bases. Decimal (base 10) uses digits 0–9. Binary (base 2) uses only 0 and 1 — the foundation of all digital computing. Octal (base 8) uses digits 0–7, historically used in Unix file permissions. Hexadecimal (base 16) uses 0–9 and A–F, widely used in programming for memory addresses, color codes (#FF5733), byte values, and cryptographic hashes.
Different countries have different numeric formatting conventions. The US writes one million dollars as $1,000,000.00 (comma as thousands separator, period as decimal). Germany writes the same as 1.000.000,00 € (period as thousands separator, comma as decimal). The formatter shows both USD (en-US) and EUR (de-DE) formats to illustrate this difference, which is critical to handle correctly in internationalized applications.