How to generate random decimal/integer numbers in Excel?
To generate random numbers in Excel is usually used, maybe in some cases, you want to generate random decimal number, but in other cases, you need to generate random whole numbers. In this tutorial, I will introduce some ways of generating random decimal or random integer numbers in Excel.
Generating random decimal numbers with formula
Generating random decimal or integer numbers with Insert Random Data utility
Generating random decimal numbers
Generating random decimal numbers between 0 and 1
1. Select a blank cell, and type =RAND() into it, and then drag the fill handle to fill the range you need with the formula.
2. Then select the range you have applied the formula, and click the Increase Decimal button or Decrease Decimal button under Home tab to specify the decimal numbers.
Generating random decimal numbers between 0 and X
To randomize decimal number between 0 and X (X indicates any maximun number you need), you can use this formula =RAND()*X. For instance, I want to generate random decimal numbers between 0 and 99, now do as below:
1. Select a blank cell and type this formula =RAND()*99, and drag the fill handle to your needed range. See screenshot:
2. Then click Home tab, and go to click Increase Decimal button or Decrease Decimal button to specify the decimal numbers.
Generating random numbers between X and Y
If you want to insert random numbers between X and Y, you can use this formula, =RAND()*(YX)+X (X and Y indicate any number, and X<Y). For instance, I will insert random numbers between 33 and 88, now you can do as this:
1. Select a blank cell, and type this formula =RAND()*(8833)+33, and drag the fill handle to the range you need. See screenshot:
2. Then click Home tab, and go to click Increase Decimal button or Decrease Decimal button to specify the decimal numbers.
Generating random decimal or integer numbers with Insert Random Data utility
If you need to generate random data supposing random decimal, integer numbers usually, I introduce a handy tool – Kutools for Excel’s Insert Random Data to you, which can help you quickly and easily finish below operations without formulas:
Insert random integer numbers
Insert random decimal numbers
Insert random date or time
Insert random string or custom list
Kutools for Excel, with more than 300 handy functions, makes your jobs more easier.  
After free installing Kutools for Excel, please do as below:
Applying the Insert Random Data utility by clicking Kutools > Insert > Insert Random Data.
Insert random integer numbers
1. Select a range of cells that you want to insert the random integer numbers, then click Kutools > Insert > Insert Random Data.
2. Under the Integer tab of the Insert Random Data dialog, enter the scope of integer numbers you want to insert randomly, if you want the random data inserted without duplicate, check Unique values checkbox.
3. Click Ok, then the selected cells have been inserted random integer numbers.
Insert random decimal numbers
1. Select a range of cells that you want to insert the random decimal numbers, then click Kutools > Insert > Insert Random Data.
2. Under the Decimal tab of the Insert Random Data dialog, enter the scope of decimal numbers you want to insert randomly, and specify the decimal place, if you want the random data inserted without duplicate, check Unique values checkbox.
3. Click Ok, then the selected cells have been inserted random integer numbers.
Insert random date or time
Insert random string or custom list
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