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Data Cleaning

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

Data Cleaning · October 27, 2026 · 4 min read Extract and Sum Amounts from Text in Excel: 2,400 Rows Extract multiple dollar amounts from Excel text, ignore numbers like 500ml, and calculate totals that update. See formulas, a 2,400-row AI demo and real screenshots. 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 · 8 min read How to Fill Blank Cells in Excel: From Above or Another Sheet Fill Excel blanks from the cell above with Ctrl+Enter, pull missing values with XLOOKUP, or automate fill-down with Power Query. Keep existing values and real zeros. Data Cleaning · June 22, 2026 · 10 min read How to Clean Data in Excel: A Practical 8-Step Checklist Clean Excel data with an 8-step checklist and a 200,000-row case: deduplicate purchases, standardize values and build a formula-linked SUMIFS summary.