[액셀Excel] 반올림 및 절삭하기 round, roundup, rounddown

엑셀의 결과 값을 반올림 하거나, 절삭(특정 자리수 값을 없앰)을 하는 경우에 사용되는 함수들

 

엑셀 반올림

=ROUNDUP(A1,-2)        무조건 반올림 (-2는10자리, -3는100의자리)

=ROUND(A1,-2)             5이상일때 반올림

=ROUNDDOWN(A1,-2)    무조건 절삭

반올림 절삭하기

ROUNDUP function

Syntax

ROUNDUP(number, num_digits)

The ROUNDUP function syntax has the following arguments:
- Number:    Required. Any real number that you want rounded up.
- Num_digits:    Required. The number of digits to which you want to round number.

 

https://support.microsoft.com/en-us/office/roundup-function-f8bc9b23-e795-47db-8703-db171d0c42a7?ui=en-us&rs=en-us&ad=us

ROUNDUP function

 

 

ROUNDDOWN function

Syntax

ROUNDDOWN(number, num_digits)

The ROUNDDOWN function syntax has the following arguments:
- Number:   Required. Any real number that you want rounded down.

- Num_digits:    Required. The number of digits to which you want to round number.

 

Example

Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.

 

Formula	Description	Result
=ROUNDDOWN(3.2, 0)	Rounds 3.2 down to zero decimal places.	3
=ROUNDDOWN(76.9,0)	Rounds 76.9 down to zero decimal places.	76
=ROUNDDOWN(3.14159, 3)	Rounds 3.14159 down to three decimal places.	3.141
=ROUNDDOWN(-3.14159, 1)	Rounds -3.14159 down to one decimal place.	-3.1
=ROUNDDOWN(31415.92654, -2)	Rounds 31415.92654 down to 2 decimal places to the left of the decimal point.	31400

 

 

https://support.microsoft.com/en-us/office/rounddown-function-2ec94c73-241f-4b01-8c6f-17e6d7968f53?ui=en-us&rs=en-us&ad=us

ROUNDDOWN function