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Data Cleaning

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

Data Cleaning · July 13, 2026 · 3 min read How to Find and Remove Duplicates in Excel — Safely Excel's Remove Duplicates button is fast, irreversible, and keeps rows you didn't choose. Here's how to count, review, and then remove duplicates — with formulas or one AI instruction. Data Cleaning · June 28, 2026 · 6 min read Fill Blank Cells in Excel with the Value Above or a Lookup Fill blank Excel cells from the row above or a reference table. Follow copyable formulas and a worked example that preserves zeros and flags missing matches. 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.