Skip to main content

How to count number of half hour intervals in Excel?

Author: Sun Last Modified: 2024-08-02

If you have two time columns in a worksheet as shown as below screenshot, and you want to count the number of half hour intervals in every period, you can read this tutorial. This tutorial will tell you how to quickly count the number of half hour intervals between start time and end time in Excel.

a screenshot showing the source data

Count number of half hour intervals


Count number of half hour intervals

There is a formula that can help you quickly count the number of half intervals between the start time and end time.

Select a blank cell next to the range, and type this formula =FLOOR((B2-A2)*24,0.5)*2 ( B2 indicates the end time, and A2 is the start time cell) into it, then press Enter key and drag the Autofill handle to fill the formula to the range you need.

a screenshot showing the result


Best Office Productivity Tools

🤖 Kutools AI Aide: Revolutionize data analysis based on: Intelligent Execution   |  Generate Code  |  Create Custom Formulas  |  Analyze Data and Generate Charts  |  Invoke Kutools Functions…
Popular Features: Find, Highlight or Identify Duplicates   |  Delete Blank Rows   |  Combine Columns or Cells without Losing Data   |   Round without Formula ...
Super Lookup: Multiple Criteria VLookup    Multiple Value VLookup  |   VLookup Across Multiple Sheets   |   Fuzzy Lookup ....
Advanced Drop-down List: Quickly Create Drop Down List   |  Dependent Drop Down List   |  Multi-select Drop Down List ....
Column Manager: Add a Specific Number of Columns  |  Move Columns  |  Toggle Visibility Status of Hidden Columns  |  Compare Ranges & Columns ...
Featured Features: Grid Focus   |  Design View   |   Big Formula Bar    Workbook & Sheet Manager   |  Resource Library (Auto Text)   |  Date Picker   |  Combine Worksheets   |  Encrypt/Decrypt Cells    Send Emails by List   |  Super Filter   |   Special Filter (filter bold/italic/strikethrough...) ...
Top 15 Toolsets12 Text Tools (Add Text, Remove Characters, ...)   |   50+ Chart Types (Gantt Chart, ...)   |   40+ Practical Formulas (Calculate age based on birthday, ...)   |   19 Insertion Tools (Insert QR Code, Insert Picture from Path, ...)   |   12 Conversion Tools (Numbers to Words, Currency Conversion, ...)   |   7 Merge & Split Tools (Advanced Combine Rows, Split Cells, ...)   |   ... and more
Use Kutools in your preferred language – supports English, Spanish, German, French, Chinese, and 40+ others!

Supercharge Your Excel Skills with Kutools for Excel, and Experience Efficiency Like Never Before. Kutools for Excel Offers Over 300 Advanced Features to Boost Productivity and Save Time.  Click Here to Get The Feature You Need The Most...


Office Tab Brings Tabbed interface to Office, and Make Your Work Much Easier

  • Enable tabbed editing and reading in Word, Excel, PowerPoint, Publisher, Access, Visio and Project.
  • Open and create multiple documents in new tabs of the same window, rather than in new windows.
  • Increases your productivity by 50%, and reduces hundreds of mouse clicks for you every day!