仕組みと動作原理
HLOOKUP関数はExcel業務を効率化する代表的な関数です。テーブルの最上行で値を検索し、同じ列の指定した行にある値を返します。 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
Searches horizontally across the first row of a table for a query value, then retrieves matching info from a row number you choose.
"Think of HLOOKUP like scanning a horizontal calendar. You search across the top row for the month, then look down to find your appointment."
構文.
標準Excel表記法=HLOOKUP(検索値, 範囲, 行番号, [検索方法])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 value to be found in the first row of the table.
指定例:D2The range of cells in which you search for the lookup_value and the return value.
指定例:A1:C2The row number in table_array from which the matching value will be returned (row 1 is the top row).
指定例:2TRUE = Approximate match, FALSE = Exact match. Set to FALSE for exact strings; set to TRUE for numerical scale brackets.
初期値: TRUE具体的な計算例
ステップ別の実務シナリオHorizontal Tax Rate Lookup
Retrieve tax rates horizontally based on the income threshold in D2 (using range_lookup = TRUE to match the tax bracket scale).
| 10000 | 50000 | 100000 | Search Income | Tax Rate |
|---|---|---|---|---|
| 0.10 | 0.20 | 0.30 | 75000 | — |
=HLOOKUP(D2, A1:C2, 2, TRUE)Evaluates HLOOKUP over the sample table cells, placing the verified output in cell E2.
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。
=HLOOKUP()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
- Ensure the values in the first row of table_array are sorted in ascending order if range_lookup is set to TRUE.
- Just like VLOOKUP, HLOOKUP only searches top-to-bottom. Use XLOOKUP if you need more flexible searches.
よくあるミスと注意点
- If row_index_num is less than 1, HLOOKUP returns a #VALUE! error. If it is greater than the number of rows in table_array, it returns a #REF! error.
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 HLOOKUP 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: =HLOOKUP(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 HLOOKUP?↓
If row_index_num is less than 1, HLOOKUP returns a #VALUE! error. If it is greater than the number of rows in table_array, it returns a #REF! error.
Does HLOOKUP work identically in Google Sheets?↓
Yes, HLOOKUP is supported in both Microsoft Excel and Google Sheets with standard evaluation behavior.