仕組みと動作原理
RIGHT関数はExcel業務を効率化する代表的な関数です。文字列の末尾（右端）から指定した文字数の文字を取り出します。 複雑な集計や参照処理を簡素化し、データ分析の精度と生産性を飛躍的に高めます。
💡 わかりやすい要約
Extracts a specific number of characters starting from the very end (right edge) of a text cell.
"Think of this like reading the last few letters of a filename to see if it is a photo (.png) or a document (.txt)."
構文.
標準Excel表記法=RIGHT(文字列, [文字数])引数一覧.
この関数で指定できるすべての引数について詳しく解説します。
The text string that contains the characters you want to extract.
指定例:A2Specifies the number of characters you want RIGHT to extract.
初期値: 1具体的な計算例
ステップ別の実務シナリオExtract File Extensions
Extract the last 3 characters of filenames in column A to identify file type extensions.
| File Name | Size (KB) | Extension | ||
|---|---|---|---|---|
| report.pdf | 1240 | — | — | — |
| budget.xlsx | 450 | — | — | — |
| logo.png | 85 | — | — | — |
=RIGHT(A2, 3)Evaluates RIGHT over the sample table cells, placing the verified output in cell C2:C6.
数式ジェネレーター
ウィザードを開く引数を入力するだけで、シートにそのまま貼り付けて使える数式を作成できます。
=RIGHT()出力される値の特性
Returns "Calculated output" based on sample evaluation criteria and active cell references.
実務上のベストプラクティス
- Use RIGHT to extract zip codes, phone suffixes, or file extensions from lists.
- Just like LEFT, if num_chars exceeds text length, all text is returned.
よくあるミスと注意点
- RIGHT will count trailing spaces as characters. Use TRIM first if your data has trailing whitespace.
各プラットフォーム対応表
実際のExcelおよびGoogleスプレッドシートの計算エンジン仕様に基づいた検証結果です。
Core standard function supported across all modern and legacy Microsoft Excel versions (365, 2021, 2019, 2016, 2013, 2010), as well as Excel for the Web and Mac.
100% compatible with Google Sheets. Uses identical argument order, data types, and standard calculation logic.
よくある質問と回答
技術解説Can I use RIGHT across different worksheets in Excel?↓
Yes. You can reference cells located on other sheets by including the sheet name followed by an exclamation mark, for example: =RIGHT(Sheet2!A2:A10). If the sheet name contains spaces, enclose it in single quotes: ='Q1 Report'!A2:A10.
What is the most common reason for errors in RIGHT?↓
RIGHT will count trailing spaces as characters. Use TRIM first if your data has trailing whitespace.
Does RIGHT work identically in Google Sheets?↓
Yes, RIGHT is supported in both Microsoft Excel and Google Sheets with standard evaluation behavior.