Turn a Task List into a Live Excel Calendar (Using One Formula)

Most people track tasks in Excel using long lists of rows and due dates. While that works, it isn’t always the easiest way to visualize deadlines and workload across a month.

In this video, I show you how to transform a simple Excel task list into a fully automated calendar using modern Excel formulas — no helper columns, no pivot tables, and no manual formatting.

With just one dynamic array formula, Excel will:

• Build a monthly calendar automatically

• Pull tasks into the correct date cells

• Update instantly when your data changes

• Filter tasks by priority and owner

Why This Works So Well in Modern Excel

We use newer Excel functions like:

• SEQUENCE to generate the calendar grid

• MAP to loop through each date in the calendar

• FILTER to pull the correct tasks for each day

Together, these functions let Excel create a live calendar directly from your data.

Once it’s built, you can change the month, update tasks, or apply filters — and the calendar updates instantly.

EXERCISE FILE:

TaskCalendar-01.xlsx

Download XLSX • 14KB

COMPLETE FORMULA:

COM-TaskCalendar-01.xlsx

Download XLSX • 16KB