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Data Cleaning

Fix missing values, duplicates, and inconsistent formats in your sheets.

Data Cleaning · October 11, 2026 · 5 min read How to Convert Text to Dates in Excel Without Mixing Up Day and Month Convert text dates in Excel with DATEVALUE, explicit date components, or Power Query locale settings. Learn to flag ambiguous and invalid dates while preserving the original data. Data Cleaning · July 13, 2026 · 5 min read Remove Duplicates in Excel and Keep the First or Latest Row Compare ways to find and remove duplicate Excel rows. Review the key, keep the first or latest record, check row counts and understand how Undo works. Data Cleaning · June 28, 2026 · 7 min read Fill Blank Cells in Excel from Above or Another Sheet Fill blank cells in Excel with the value above in five steps, or use XLOOKUP to pull missing values from another sheet. Includes formulas and worked examples. Data Cleaning · June 22, 2026 · 7 min read How to Clean Data in Excel: A Practical 8-Step Checklist Clean Excel data with a practical checklist and a GetSheetAI demo: 2,600 sample orders become 2,500 unique rows, with consistent dates, codes, and numbers.