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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 · 4 min read How to Find and Fill Missing Values in Excel (Without Guessing) Locate blank cells fast, decide whether to fill, flag, or leave them, and use formulas or AI to complete missing data in Excel — with an audit trail of what changed. Data Cleaning · June 22, 2026 · 5 min read How to Clean Data in Excel: A Practical 8-Step Checklist Clean messy Excel data with an 8-step checklist for spaces, dates, numbers, blanks, duplicates, and formula errors—plus Power Query and AI workflows.