Prevent broken formulas using tables, validation rules, separate worksheets, named variables, and the power of LAMBDA.

Overview:Excel books support long-term learning compared to short tutorials that explain quick data-centric tasks.Books ...

If Excel is not using threads efficiently, calculations may take a long time to complete. Learn how to speed up calculating threads in Excel.

Excel table formulas shift from cell positions to named columns with #All-style tags, keeping calculations readable when layouts change.

OpenAI has launched ChatGPT for Excel in beta, a specialized add-in powered by the new GPT-5.4 Thinking model designed specifically for financial workflows. OpenAI introduced deep data integrations ...

AGGREGATE was built to handle messy data from the start.

OpenAI released GPT-5.4 in ChatGPT (as GPT-5.4 Thinking), the API, and Codex, calling it its most capable and efficient ...

Dark Mode has its drawbacks. For example, the worksheet grid usually remains white. You can choose Black under Office Theme, which activates a Dark Mode toggle in the View tab of your Excel ribbon.

Microsoft is launching "Wave 3" of its 365 Copilot suite with several "agentic AI" features across the Office apps, including Word, Excel, Outlook and PowerPoint.

The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some ...

After one of the team members applied for a corporate job at Weigel’s—a local convenience store chain with about 90 locations ...

Erica Gardner is a math teacher at D-B Excel High School in Kingsport. She was born into a family of teachers in Gate City, ...