Practical advice on fixing Excel errors, auditing spreadsheets, and building workbooks that don't break.
Why double-clicking a CSV file goes wrong and how to import it correctly. Covers the Text Import Wizard, Power Query, and a free browser tool — plus fixes for common problems.
Read article →Combine multiple Excel workbooks into one file using copy-paste, Power Query, VBA, or a free browser tool. Covers stacking rows and combining sheets.
Read article →Why Excel files balloon in size and 8 proven methods to shrink them — from removing unused rows to stripping formatting and compressing with a free tool.
Read article →Split one Excel sheet into multiple sheets or files based on a column value — by region, department, product category, or any grouping. VBA, manual filter, and free tool.
Read article →Convert Excel spreadsheets to JSON format using Python, Node.js, or a free browser tool. First row becomes object keys — output is ready for APIs and web apps.
Read article →Learn how to sort Excel data by two or more columns safely, avoid mixed-up rows, and use a free browser tool for quick clean sorting.
Read article →Replace text, numbers, labels, and codes across one sheet or a whole Excel workbook safely, with a checklist to avoid accidental replacements.
Read article →Four practical ways to extract unique values in Excel using UNIQUE, Advanced Filter, Remove Duplicates, and a free browser tool.
Read article →Calculate count, sum, average, minimum, maximum, missing values, and numeric summaries for Excel columns with formulas or a free browser tool.
Read article →Learn when Excel to XML conversion is useful, how XML maps work, and how to create a clean XML export from spreadsheet rows.
Read article →Rotate Excel data from rows to columns using Paste Special, TRANSPOSE, Power Query, or a free browser tool.
Read article →Remove blank rows from Excel safely using filters, Go To Special, Power Query, or a free browser tool that preserves your data.
Read article →A practical Excel data cleaning checklist covering blanks, duplicates, formulas, sorting, formatting, unique values, and file conversion.
Read article →Four ways to save an Excel spreadsheet as CSV — from the built-in Save As to Python and a free browser tool. Covers encoding, date formatting, and multi-sheet files.
Read article →Step-by-step guide to freezing the top row, first column, or multiple rows and columns — so headers stay visible while scrolling. Plus fixes for common freeze pane problems.
Read article →COUNTIF returning 0, wrong counts, or an error? The five most common causes — data type mismatches, missing quotes, wildcard errors, spaces — with copy-paste fixes.
Read article →Dates showing as numbers, wrong year, or refusing to format? Every Excel date problem has a specific cause. This guide explains the five most common with step-by-step fixes.
Read article →Step-by-step guide to removing duplicate rows using the built-in tool, UNIQUE formula, conditional formatting, and Power Query — including which method to use when.
Read article →The #VALUE! error appears when Excel receives the wrong data type in a formula. Learn the 6 most common causes — text in maths, date mismatches, wrong arguments — with exact fixes.
Read article →Slow Excel files are caused by specific, fixable problems. Volatile functions, excessive conditional formatting, full-column references — here is how to fix each one.
Read article →Four methods to compare two Excel spreadsheets — from built-in View Side by Side to formula-based difference finders and conditional formatting highlights.
Read article →SUMIF returning 0, a wrong total, or an error? These are the six most common reasons — text-formatted numbers, wildcard mistakes, range size mismatches — with copy-paste fixes.
Read article →Numbers stored as text look normal but break SUM, AVERAGE, and VLOOKUP silently. Learn how to identify them with 3 detection methods and convert them in bulk.
Read article →The #NAME? error means Excel does not recognise something in your formula. Here are all 7 causes — misspelled functions, undefined names, missing quotes — with exact fixes for each.
Read article →The habits that separate error-prone spreadsheets from reliable ones. Ten rules used by financial modellers and data analysts to build workbooks that stay accurate over time.
Read article →A circular reference means a formula depends on its own result — causing infinite loops or zero values. Learn how to find every circular reference in your workbook and resolve it.
Read article →Standard hidden sheets are easy to reveal, but "Very Hidden" sheets (xlSheetVeryHidden) cannot be found through the right-click menu. Here is how to find and unhide both.
Read article →Your formula is there but the result never updates. Here are the six most common reasons Excel formulas stop calculating — and the exact steps to fix each one.
Read article →VLOOKUP returning #N/A, the wrong value, or an error? This guide covers every common cause — from data type mismatches to extra spaces — with copy-paste fixes for each.
Read article →Numbers that look right but are secretly wrong. Learn the hidden Excel errors — text-formatted numbers, overwritten formulas, and broken links — that silently corrupt your totals.
Read article →A step-by-step auditing process used by financial analysts and data teams to catch errors before they cause real problems.
Read article →A plain-English guide to every Excel formula error — what causes each one, how to find them quickly, and step-by-step fixes you can apply right now.
Read article →Use the free tool to find errors, inconsistent formulas, and hardcoded values instantly — no signup needed.
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