如何在Excel中的每个单元格中添加时间范围？

Question

I have an Excel sheet that a manager updates manually with agent's work times, every week. I want to be able to calculate the number of hours for all agents for each day.

The Excel sheet looks something like this:

 +-----------+-------------+-------------+-------------+  
 |    NAME   |  MONDAY     |  TUESDAY    | WEDNESDAY   |  
 +-----------+-------------+-------------+-------------+  
 |   John    | 8:30 - 17:00| 8:30 - 17:00| 8:30 - 17:00|  
 +-----------+-------------+-------------+-------------+  
 |   Peter   | 8:00 - 16:30| 8:00 - 16:30| 8:00 - 16:30|  
 +-----------+-------------+-------------+-------------+  
 |   Craig   | 9:00 - 17:30| 9:00 - 17:30| 9:00 - 17:30|  
 +-----------+-------------+-------------+-------------+  
 |   TOTAL   |      8:30   |      8:30   |      8:30   |  
 +-----------+-------------+-------------+-------------+

Is this even possible? It would save a lot of time for a lot of people if it can be done.

Answer 1

use SUMPRODUCT() with LEFT and RIGHT to parse the data:

=SUMPRODUCT(RIGHT(TRIM(B2:B4),5)-LEFT(TRIM(B2:B4),5))

You will need to use a custom format on the output of [hh]:mm