Do you ever think about questions like this?
- What is the maximum profits we can make?
- What is the best way to schedule employees in shifts?
- What the best combination of tasks we can finish in a given time?
You might have heard about Excel Solver tool while trying to find solutions to questions above. If you have never used Solver or have little idea about it, then this post and video are for you.
What is Excel Solver really?
Excel Solver can solve problems for you. That simple!
For a given problem, excel solver can run various permutations and combinations and find out best possible solution for you. It is like goal seek, but better & awesomer.
Excel Solver Tutorial:
It is tricky to explain what solver does in text. So I made a short video (13 min). In this video you can learn,
- What is solver really?
- How to use it – a simple example.
- Finding the next month with 5 Fridays, 5 Saturdays and 5 Sundays using Solver
Watch the Excel Solver Tutorial video:
Few Tips while using Solver:
- Define your problem first: In order to make the best use of solver, you need to define your problem very clearly and model it using Excel. This comes with practice. Start by modeling sample problems you find in work / life and you will be able to master this art.
- Tweak Solver Settings: Mess with solver settings by clicking on “options” button.
Additional Resources on Excel Solver
- Excel Solver Introduction and examples from Microsoft
- Excel Solver Examples from Vertex42
- Linear Programming with Solver from Economics Network
- Excel Solver Tutorial & Examples [PDF] from Standford University
What is your experience with Solver?
First I must confess that I am still a partial solver virgin. I have used it during my MBA to solve some optimization problems. Then I never had the opportunity to use it while working. I still struggle to set-up models and find required solutions thru Solver. That said, I think solver is an excellent tool and very powerful.
What is your experience with solver like? Please share tips / ideas with us using comments.
13 Responses to “Convert fractional Excel time to hours & minutes [Quick tip]”
Hi Purna..
Again a great tip.. Its a great way to convert Fractional Time..
By the way.. Excel has two great and rarely used formula..
=DOLLARFR(7.8,60) and =DOLLARDE(7.48,60)
basically US Account person uses those to convert some currency denomination.. and we can use it to convert Year(i.e 3.11 Year = 3 year 11 month) and Week(6.5 week = 6 week 5 days), in the same manner...
This doesn't work for me. When applying the custom format of [h]:mm to 7.8 I get 187:12
Any ideas why?
@Jason
7.8 in Excel talk means 7.8 days
=7.8*24
=187.2 Hrs
=187 Hrs 12 Mins
If you follow Chandoo's instructions you will see that he divides the 7.8 by 24 to get it to a fraction of a day
Simple, assuming the fractional time is in cell A1,
Use below steps to convert it to hours & minutes:
1. In the target cell, write =A1/24
2. Select the target cell and press CTRL+1 to format it (you can also right click and select format cells)
3. Select Custom from “Number” tab and enter the code [h]:mm
4. Done!
Hi, sorry to point this out but Column C Header is misspelt 'Hours Palyed'
good one
So how do I go the other way and get hours and minutes to fractional time?
If you have 7.5 in cell A1,
- Use int(A1) to get the hours.
- Use mod(A1,1)*60 to get minutes.
If you have 7:30 (formatted as time) in A1
- Use hours(a1) to get hours
- Use minutes(a1) to get minutes.
I had the same issue. You can solve it by changing the format as described above:
Right click cell > Format Cells > (In Number tab) > Custom > Then enter the code [h]:mm
([hh]:mm and [hhh]:mm are nice too if you want to show leading zeros)
Thanks guys, these are the tips I'm looking for.
...dividing the number of minutes elapsed by the percent change is my task - "int" is the key this time
It doesnt work for greater than 24 hours
It returns 1:30 for 25.5 hours. It should have returned 25:30
Ideally I would right function as
=QUOTIENT(A1,1)&":"&MOD(A1,1)*60
Sorry, replied to wrong comment....
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I had the same issue. You can solve it by changing the format as described above:
Right click cell > Format Cells > (In Number tab) > Custom > Then enter the code [h]:mm
([hh]:mm and [hhh]:mm are nice too if you want to show leading zeros)
Clever use of MOD here to extract the decimal part of a number. Divide a number containing a decimal by 1 and return the remainder. Humm. Very clever.
Thanks very much, extremely useful !