Excel チュートリアル

Combine cell values smoothly with TEXTJOIN(). Handle delimiters, skip blanks, and simplify your data assembly in Excel.

Are you having trouble with slow Excel workbooks or large files that are hard to share? This guide shows you simple and advanced ways to reduce Excel file size, improve performance, and make collaboration easier.

Discover quick methods to start a new line in an Excel cell using keyboard shortcuts, formulas, and Find & Replace. Learn platform-specific tips for Windows, Mac, and web-based Excel versions.

Learn how to merge text, numbers, and cell ranges in Excel, reduce manual entry, and keep your data tidy and well-organized.

From basic concepts to advanced implementation, learn to build effective Sankey diagrams using popular tools. Discover the key components, best practices, and design principles that make flow visualizations compelling and insightful.

Discover how Kutools for Excel transforms complex Excel tasks into single-click operations with specialized productivity tools. Learn installation, key features, and practical applications to enhance your Excel workflow.

Discover how to use the ROUNDUP() function in Excel to consistently round numbers away from zero. Learn the syntax, see examples, and compare ROUNDUP() with other rounding methods.

Learn how to use PI() in Excel so you have precision with mathematical formulas. Discover examples, syntax details, and tips for harnessing π in calculations.

Master the `SEQUENCE()` function to supercharge your spreadsheet skills. Learn how to create dynamic lists, automate calculations, and unlock new Excel possibilities.

Learn how to insert a check mark in Excel using symbols, shortcuts, formulas, and checkboxes. Discover formatting tips, automation tricks, and counting techniques for efficient spreadsheet tracking.

Master Excel time formulas to calculate durations, handle time over 24 hours, and format time values for clear, accurate reporting.

Learn how Excel's wildcard characters enhance flexibility in search, replace, and formula logic. Discover practical examples using *, ?, and ~ in filtering, VLOOKUP(), and more.