数値フォーマッター

使い方

Intl.NumberFormat APIを使用して、ロケール固有のスタイル、通貨、桁区切り、小数点以下の桁数で数値を書式設定します。

1. 1Enter a number in the input field (e.g., 1234567.89).
2. 2Select a locale from the dropdown to set the language and regional number style.
3. 3Choose a formatting style: Decimal, Currency, Percent, or Scientific.
4. 4If Currency is selected, pick a currency code (USD, EUR, GBP, etc.).
5. 5Adjust decimal places with the slider and toggle the grouping separator, then copy the result.

主な機能

• Supports 8 locales: en-US, en-GB, de-DE, ja-JP, zh-CN, ko-KR, fr-FR, es-ES
• Four number styles: Decimal, Currency, Percent, Scientific (exponential)
• Currency formatting with USD, EUR, GBP, JPY, KRW, CNY
• Adjustable decimal places from 0 to 10
• Toggle grouping separator on or off for cleaner output

よくある質問

詳しく読む

• Number Formatting Guide: Locale-Aware Numbers in JavaScript