Go Back

Round a number down

We use the ROUNDDOWN function to round a number down, not minding the number being rounded to a specified number of decimal places. We will walk through the process of using the ROUNDDOWN function in simple steps.

Figure 1- Results of using the ROUNDDOWN function

General Formula

=ROUNDDOWN(number,num_digits)

  • “Number” – number to round down
  • “num_digits – the number of decimal places to round down the number.

Formula

=ROUNDDOWN(B4,C4)

Setting up the data

  • We will input the numbers to be rounded up in the range: B4:B10
  • Next, we specify the number of digits in the range C4:C10
  • We will place the results in Column D, which we name “Results.”

Figure 2 – Setting up the Data

Applying the Excel ROUNDDOWN function

  • We will click on Cell D4
  • We will insert the formula below in Cell D4

=ROUNDDOWN(B4,C4)

Figure 3 – Applying the ROUNDDOWN function

  • We will press the enter key

Figure 4- Cell containing a rounded down number

  • We will use the fill handle tool to copy the formula into the other cells to get the results.

Figure 5-How to use the Excel ROUNDDOWN function

Explanation

The ROUNDDOWN function will always round numbers 1-9 down. This is unlike the standard rounding that rounds numbers less than 5 down. It works like the Excel ROUND function and positive digits will be rounded to the right of the decimal point while zero and negative numbers will be rounded to the left.

Therefore:

  • If num_digits is > 0, the number will be rounded to the right of the decimal point
  • If num_digits is < 0, the number is rounded down to the left of the decimal.
  • If num_digits = 0, the number is rounded down to the left of the decimal point

Instant Connection to an Expert through our Excelchat Service

Most of the time, the problem you will need to solve will be more complex than a simple application of a formula or function. If you want to save hours of research and frustration, try our live Excelchat service! Our Excel Experts are available 24/7 to answer any Excel question you may have. We guarantee a connection within 30 seconds and a customized solution within 20 minutes.

Did this post not answer your question? Get a solution from connecting with the expert.

Another blog reader asked this question today on Excelchat:
Here are some problems that our users have asked and received explanations on

I need a formula to round up or round down a sheet with multiple cells containing whole numbers to be rounded to either 5 or 0
Solved by M. H. in 27 mins
Can I create a rule that says for example $0.50 to $0.99 round up to nearest dollar and $0.01 to $0.29 round down
Solved by I. Y. in 20 mins
Is there a way to round up and down to a set group of quantities?
Solved by K. S. in 26 mins

Leave a Comment

avatar