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Number Formatter

Format numbers with different locales, styles (decimal, currency, percent, scientific), and separators.

How to Use

  1. Step 1: Enter a number in the input field.
  2. Step 2: Choose a locale (e.g. en-US, zh-CN) and a format style (decimal, currency, percent, etc.).
  3. Step 3: The formatted result appears instantly. Use the comparison table to see the same number across multiple locales.

Frequently Asked Questions

What is number formatting?

Number formatting adapts how numbers are displayed based on locale and style — for example, 1234.56 can become "1,234.56" (US), "1 234,56" (France), or "￥1,234.56" (China with currency).

What is the difference between compact and scientific notation?

Scientific notation always shows a coefficient and exponent (e.g. 1.23E3). Compact notation uses locale-aware abbreviations (e.g. "1.2K", "1.2万") which are more readable for large numbers.

Why do number formats differ between countries?

Different countries use different decimal and thousands separators: US/UK use comma for thousands (1,000.00); Germany/France use period for thousands (1.000,00); India uses different grouping (1,00,000.00). International software must use locale-aware number formatting based on the user's region.

What international number format differences should I be aware of?

Number formats vary significantly by country: thousands separator — US/China use a comma (1,000), Europe uses a period (1.000) or space (1 000); decimal point — US/China use a period (3.14), Europe uses a comma (3,14); currency symbol position varies. When developing internationalized applications, use the Intl.NumberFormat API rather than hardcoding formats.