Excel CHOOSE function
 Ex1  Basic usage: using CHOOSE function alone to choose value from list argument
 Ex2 – Return different results based on multiple conditions
 Ex3 – Return different calculated results based on conditions
 Ex4 – Choose random from list
 Ex5 – Combine CHOOSE and VLOOKUP functions to return value in left column
 Ex6 – Return weekday or month based on given date
 Ex7 – Return to next workday/weekend date based on today
Description
The CHOOSE function returns a value from the list of value argument based on the given index number. For example, CHOOSE(3,”Apple”,”Peach”,”Orange”) returns Orange, the index number is 3, and Orange is the third value after index number in the function.
syntax and Arguments
Formula syntax
CHOOSE(index_num, value1, [value2], …) 
Arguments

Value1, value2… can be numbers, texts, formulas, cell references, or defined name.
Return Value
The CHOOSE function returns a value from a list based on the given position.
Usage and Examples
In this part, I list some simple but representative examples to explain the usage of the CHOOSE function.
Ex1  Basic usage: using CHOOSE function alone to choose value from list argument
Formula1:
=CHOOSE(3,"a","b","c","d")
Return: c, which is the third argument after the index_num of 3 in the CHOOSE function.
Note: using double quotes surrounding the value if it is text.
Formula2:
=CHOOSE(2,A1,A2,A3,A4)
Return: Kate, the value of A2. Since the index_num is 2, and A2 is the second value in the CHOOSE function.
Formula3:
=CHOOSE(4,8,9,7,6)
Return: 6, the 4th list argument in the function.
Ex2 – Return different results based on multiple conditions
Supposing you have a list of deviations for each product which needed to be labeled based on conditions as below screenshot shown.
Usually, you can use the IF function to handle, but here I introduce how to use the CHOOSE function to solve this problem easily
Formula:
=CHOOSE((B7>0)+(B7>1)+(B7>5),"Top","Middle","Bottom")
Explain:
(B7>0)+(B7>1)+(B7>5): the index_num, B7 is 2, which is bigger than 0 and 1 but less than 5, so we get the intermediate result:
=CHOOSE(True+Ture+False,"Top","Middle","Bottom")
As we know, True = 1, False = 0, so the formula can be viewed as :
=CHOOSE(1+1+0,"Top","Middle","Bottom")
then
=CHOOSE(2,"Top","Middle","Bottom")
Result: Middle
Ex3 – Return different calculated results based on conditions
Supposing you need to calculate the rebates for each product based on the amount and price as below screenshot shown:
Formula:
=CHOOSE((B8>0)+(B8>100)+(B8>200)+(B8>300),B8*C8*0.1,B8*C8*0.2,B8*C8*0.3,B8*C8*0.5)
Explain:
(B8>0)+(B8>100)+(B8>200)+(B8>300): index_number, B8 is 102, which is larger than 100 but less than 201, so in this part, it returns result shown as:
=CHOOSE(true+true+false+false,B8*C8*0.1,B8*C8*0.2,B8*C8*0.3,B8*C8*0.5)
=CHOOSE(1+1+0+0,B8*C8*0.1,B8*C8*0.2,B8*C8*0.3,B8*C8*0.5)
then
=CHOOSE(2,B8*C8*0.1,B8*C8*0.2,B8*C8*0.3,B8*C8*0.5)
B8*C8*0.1,B8*C8*0.2,B8*C8*0.3,B8*C8*0.5: the values from which to choose, rebate equals to price * amount * rebate percent, since here index_num is 2, it chooses B8*C8*0.2
Returns: 102*2*0.2=40.8
In Excel, sometimes, you may need to randomly choose a value from a given list, the CHOOSE function can solve this job.
Randomly choose one value from a list:
Formula:
=CHOOSE(RANDBETWEEN(1,5),$D$2,$D$3,$D$4,$D$5,$D$6)
Explain:
RANDBETWEEN(1,5): index_num, randomly obtain number between 1 to 5
$D$2,$D$3,$D$4,$D$5,$D$6: the list of values from which to choose
Ex5 – Combine CHOOSE and VLOOKUP functions to return value in left column
Generally, we use the VLOOKUP function =VLOOKUP (value, table, col_index, [range_lookup]) to return a value based on a given value from a table range. But with the VLOOKUP function, it will return an error value while the return column is on the left of lookup column as below screenshot shown:
In this case, you can combine the CHOOSE function with VLOOKUP function to solve the problem.
Formula:
=VLOOKUP(E1,CHOOSE({1,2},B1:B7,A1:A7),2,FALSE)
Explain:
CHOOSE({1,2},B1:B7,A1:A7): as table_range argument in the VLOOKUP function. {1,2} means to display 1 or 2 as index_num argument based on the col_num argument in VLOOKUP function. Here, the col_num in VLOOKUP function is 2, so the CHOOSE function display as CHOOSE(2, B1:B7,A1:A7), means to choose value from A1:A7.
Ex6 – Return weekday or month based on given date
With the CHOOSE function, you also can return the relative weekday and month based on a given date.
Formula 1: return weekday by a date
=CHOOSE(WEEKDAY(),"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")
Explain:
WEEKDAY(): the index_num argument, to get the weekday number of the given date, for example, WEEKDAY(A5) returns 6, then the index_num argument is 6.
"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday": value list arguments, start with “Sunday” because weekday number “1” indicates “Sunday”.
Formula 2: return month by a date
=CHOOSE(MONTH(),"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")
Explain:
MONTH(): index_num argument, which get the month number from the given date, for example, MONTH(A5) returns 3.
Ex7 – Return to next workday/weekend date based on today
In daily work, you may want to calculate the next workday or weekend based on today. Here the CHOOSE function also can do you a favor.
For instance, today is 12/20/2018, Thursday, now you need to obtain the next workday and weekend.
Formula 1: get the date of today
=TODAY()
Result: 12/20/2018
Formula 2: get the weekday number of today
=WEEKDAY(TODAY())
Result: 5 (while today is 12/20/2018)
The weekday number list as below screenshot shown:
Formula 3: get the next workday
=TODAY()+CHOOSE(WEEKDAY(TODAY()),1,1,1,1,1,3,2)
Explain:
Today(): return the current date
WEEKDAY(TODAY()): index_num argument in the CHOOSE function, get the weekday number of today, for example, Sunday is 1, Monday is 2…
1,1,1,1,1,3,2: value list argument in the CHOOSE function. For example, if weekday(today()) returns 1 (Sunday), it choose 1 form the list of values, then the whole formula changes to =Today()+1, which means to add 1 day to return next Monday. If weekday(today()) returns 6 (Friday), it chooses 3 from the list of values, because Friday is 3 days far from next Monday.
Result (while today is 12/20/2018):
=12/20/2018+CHOOSE(5,1,1,1,1,1,3,2)
=12/20/2018+1
=12/21/2018
Formula 4: get the next weekend day
=TODAY()+CHOOSE(WEEKDAY(TODAY()),6,5,4,3,2,1,1)
Explain:
6,5,4,3,2,1,1: value list argument in the CHOOSE function. For example, if weekday(today()) returns 1 (Sunday), it chooses 6 from the list of values, then the whole formula changes to =Today()+6, which means to add 6 days and return next Saturday.
Result:
=12/20/2018+CHOOSE(5,6,5,4,3,2,1,1)
=12/20/2018+2
=12/22/2018
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