Excelsemipro Team Articles
A browsable archive of Excel tutorials and guides written by Excelsemipro Team.
31 articles
How to Change Case in Excel: Uppercase, Lowercase, and Proper Case
Learn how to change case in Excel with UPPER, LOWER, PROPER, Flash Fill, and Paste Special so you can safely replace text values....
Compare Two Columns in Excel
Learn how to compare two columns in Excel for matches, differences, duplicates, missing values, and case-sensitive text....
How to Find and Fix Circular References in Excel
Learn how to find a circular reference in Excel, trace the formula loop, fix common circular reference errors, and handle intentional iterative formulas....
How to Calculate Percentage Change in Excel
Learn the percentage change formula in Excel, including examples for increases, decreases, percentage formatting, and avoiding divide-by-zero errors....
The Karpathy Loop for Excel: How Autoresearch Changes the Way We Optimize Spreadsheets
Learn how Karpathy's autoresearch pattern — the AI experiment loop that ran 700 tests in two days — applies to Excel formula optimization, VBA macros, and AI-assisted spreadsheet workflows....
Claude for Excel Review: Best for Complex Models and Error Tracing?
Review Claude for Excel for complex models, error tracing, and careful workbook analysis, including the limits that still matter in beta....
ChatGPT for Excel: What It Does Well and Where It Still Needs Review
Review ChatGPT for Excel after the March 5, 2026 launch and see where it helps most with formulas, workbook analysis, and spreadsheet workflows....
Gemini vs ChatGPT for Spreadsheet Analysis
Compare Gemini vs ChatGPT for spreadsheet analysis, including uploaded Excel files, cross-platform workflows, summaries, and verification risks....
How to Use =COPILOT in Excel
Learn how to use the =COPILOT function in Excel, what kinds of prompts work best in cells, and where this feature still needs careful review....
Copilot in Excel vs ChatGPT: Which Is Better for Real Spreadsheet Work?
Compare Copilot in Excel vs ChatGPT for workbook analysis, formula help, messy data, privacy tradeoffs, and day-to-day spreadsheet work....
How to Upload an Excel File to ChatGPT and Analyze It Safely
Learn how to upload an Excel file to ChatGPT safely, what kinds of workbook questions it handles well, and what you still need to verify manually....
Can AI Fix Broken Excel Formulas? Real Tests With VLOOKUP, XLOOKUP, and SUMIFS
I tested whether AI can fix broken Excel formulas in real scenarios involving VLOOKUP, XLOOKUP-style logic, and SUMIFS errors caused by dirty data....
How to Use AI to Explain Excel Formulas Step by Step
Learn how to use AI to explain Excel formulas step by step, including how to verify the explanation and catch what the model still gets wrong....
Best AI for Excel Formulas: Copilot vs ChatGPT vs Claude
Compare Copilot, ChatGPT, and Claude for Excel formulas using the same prompt, the same workbook task, and the same verification standard....
Why Copilot Is Not Working in Excel: Common Fixes and Requirements
Fix the most common reasons Copilot is not working in Excel, including table setup problems, licensing issues, platform limits, and messy workbook structure....
How to Use Copilot in Excel for Formulas, Analysis, and Cleanup
Learn how to use Copilot in Excel for real workbook tasks such as formula writing, data cleanup, and quick analysis without trusting the first answer blindly....
AI in Excel: Practical Guide to Copilot, ChatGPT, Claude, and Gemini
Learn how to use AI in Excel with Copilot, ChatGPT, Claude, and Gemini. Compare strengths, limitations, use cases, and how to verify AI-generated formulas, analysis, and automation....
How to Fix Common XLOOKUP Errors in Excel
Fix common XLOOKUP errors in Excel, including #N/A, spill problems, mismatched ranges, and text cleanup issues that break lookups....
How to Use XLOOKUP with Wildcards for Partial Matches
Learn how to use XLOOKUP with wildcards in Excel for partial matches, contains searches, and messy text that does not match exactly....
How to Return Multiple Columns and Rows with XLOOKUP
Learn how to use XLOOKUP to return multiple columns or rows in Excel and how spill behavior changes the way lookup formulas work....
How to Use XLOOKUP with Multiple Criteria in Excel
Learn how to use XLOOKUP with multiple criteria in Excel by combining Boolean logic or concatenation for cleaner, more flexible lookups....
XLOOKUP vs VLOOKUP in Excel: Which Should You Use?
Compare XLOOKUP vs VLOOKUP in Excel, including syntax, left lookups, exact matches, and when the older function still makes sense....
XLOOKUP Function in Excel: Step-by-Step Guide for Beginners
Learn how to use XLOOKUP in Excel with beginner-friendly steps, practical examples, and a clear comparison with VLOOKUP, HLOOKUP, and INDEX MATCH....
Currency Conversion Using Live Exchange Rates in Excel and Google Sheets
This guide covers step-by-step practical instructions, for efficient multiple currency conversion with live exchange rates in Excel and Google Sheets....
How to Remove Last Saved By Information from an Excel File on Mac and Windows
Learn how to remove Last Saved By info from Excel files on Mac and Windows to maintain privacy when sharing documents. Follow our easy guide....
4 Methods to Insert a Timestamp in Excel Cell
Explore easy methods to insert timestamp in Excel. Learn shortcuts, formulas, and VBA for effective data tracking in our concise guide....
TRUNC Function in Excel: A Comprehensive Guide
Discover the power of Excel TRUNC function with this comprehensive guide. Learn practical applications, and excel at truncating numbers in Excel....
Excel Worksheets: A Beginner's Guide
Want to start using Excel worksheets? With this guide, you can get a basic understanding of what worksheets are and how to make them work for you....
VLOOKUP Not Working with Text Values: 6 Fixes You Need
Fix your VLOOKUP not working with text issue using our troubleshooting tips. Don't let #N/A or #VALUE errors stop you from getting accurate results....
Learn How to Add In Excel Using the SUM Function and AUTOSUM
We focus here on the SUM function and AUTOSUM feature, demonstrating how these tools are essential for understanding how to add in Excel....
How to Get Excel for Free (Including Best Free Excel Alternatives in 2023)
Is Microsoft Excel free? Learn how to access Microsoft Excel for free and discover Excel free alternatives in 2023....
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