Random Number Generator

Ready-To-Use Random Number Generator Template

Random Number Generator in Excel, OpenOffice Calc & Google Sheet with 9 random generators to generate random integers, decimals, date, time, alphabets, names, teams, etc.

Moreover, Random Number Generator generates singular or multiple random numbers with or without duplicates.

In addition to that, the Random Name and Team Generator generates a random name from a given list. It also generates random teams from a given set of names.

Furthermore, it consists of the Random Date and Time Generator that helps you generate random dates and times between two given ranges.

Download Random Number Generator (Excel, OpenOffice Calc & Google Sheet)

With the help of VBA coding and using Functions, we have created a simple and easy 9 different Random Generators.

Just download the file, insert the lower range and upper range and the template will automatically generate the random for you.

Microsoft Excel OpenOffice Calc Google Sheet

What are Random Numbers?

A random number is a number chosen as if by chance from some specified distribution such that the selection of a large set of these numbers reproduces the underlying distribution. Almost always, such numbers are also required to be independent, so that there are no correlations between successive numbers.

Source: www.mathworld.wolfarm.com.

A random number is chosen from a large set of numbers. Such numbers are also required to be independent so that there are no correlations between successive numbers.

Contents of Random Number Generator Template

This template consists of 9 Random Generators:

  1. Number Generator (With Duplicates)
  2. Integer Generator (Without Duplicates)
  3. Decimal Generator
  4. Date Generator
  5. Time Generator
  6. Alphabet Generator
  7. Name Generator
  8. Team Generator
  9. Lottery Ticket Winner Generator

Let us understand the functioning of each in detail.

Random Number Generator (With Duplicates)

Random Number Generator 1

This template generates a single Random number and a set of random numbers from a given range. Specify the lower range in cell D6 and upper range in cell F6. It will automatically generate random numbers for you between that range.

This section uses the RANDBETWEEN function to generate random numbers within a given range. The only limitation with the RANDBETWEEN function is that when applied to multiple cells it generates some duplicates numbers between that range.

You can use this to generate such numbers for kids to practice mathematical functions like addition, subtraction, multiplication, division, etc.

Every time you make changes to the sheet these random numbers will change. If you want to use those numbers, kindly copy and paste using “Paste Special” selecting the “Values” option to another location in the sheet.

Random Integer Generator (Without Duplicates)

Random Integer Generator

This Random Number Generator displays multiple random numbers/integers without duplicates. It generates 100 random numbers.

In this section, it is necessary that the difference between the lower range and the upper range should be 100. Then only the generator works properly. Otherwise, it will display the following message:

 

Moreover, the template uses a VBA code to generate random numbers between a range. The code is explained at the end of the article so that you can use it according to your requirements.

Random Decimal Generator

Random Decimal Generator

Random Decimal Generator generates random decimal numbers between a range. Insert the lower limit and the upper limit to generate the decimal numbers.

This section uses the RANDBETWEEN function to generate random numbers within a given range. When applied to multiple cells it generates some duplicates numbers between that range.

Furthermore, if you want to use those numbers, kindly copy and paste using “Paste Special” selecting the “Values” option to another location in the sheet.

It uses the following formula:

=RANDBETWEEN($D$6*100,$F$6*100)/100

You can use this to generate such numbers for kids to practice mathematical functions.

Random Date Generator

Random Date Generator

Date Generator 5 different dates between a given range of dates. Insert the start date and end date. This section also uses RANDBETWEEN Function with DATEVALUE Function.

It uses the following formula:

=RANDBETWEEN(DATEVALUE(“1-Jan-21”),DATEVALUE(“15-Jan-21”))

Random Time Generator

Random Time Generator

Time Generator displays random time between the time range. Insert start time and end time and it will generate 5 different times between the range. This section uses the TIME VALUE Function with RAND Function.

It uses the following formula:

=TIMEVALUE(“12:00 AM”) + RAND() * (TIMEVALUE(“6:00 PM”) – TIMEVALUE(“12:00 AM”))

Random Alphabet Generator

Random Alphabet Generator

Alphabet Generator display alphabets between a given range. Insert the start alphabet between A To Z and it will display the random alphabet for you.

It uses RANDBETWEEN Function with a combination of the CHAR Function and CODE Function. It uses the following formula:

=CHAR(RANDBETWEEN(CODE($D$22),CODE($F$22)))

Random Name Generator

Random Name Generator

Usually, this section is useful to a teacher or school to generate a random name from a given list of students. Insert names of the students or employees in a single column and apply the formula.

If the names are not in a single column it will not generate the random name and displays a #Value error.

This section uses RANDBETWEEN Function along with the INDEX Function. It uses the following formula:

=INDEX(B31:B42,RANDBETWEEN(1,12))

Random Team Generator

Random Team Generator

Team Generator generates a team from a list of names. Insert the names in a single column and apply the formula. As in the above generator, if the names are not in a single column it will not generate the random name and displays a #Value error.

This section uses RANDBETWEEN Function along with the INDEX Function. It uses the following formula:

=INDEX($B$31:$B$42,RANDBETWEEN(1,12))

Random Lottery Ticket Winner Generator

Random Lottery Winner Generator

This section is similar to the above section. Insert the lottery number in series in the column and apply the formula. This section also uses RANDBETWEEN Function along with the INDEX Function.

VBA Code to Generate Random Numbers Without Duplicates

The Random Number Generator Without Duplicates uses the following VBA Code:


Public Sub generateRandNum()
'Define your variabiles
lowerbound = Range("D22")
upperbound = Range("F22")
Set randomrange = Range("B24:F43")
randomrange.ClearContents
For Each rng1 In randomrange
counter = counter + 1
Next
If counter > upperbound – lowerbound + 1 Then
MsgBox ("Number of cells > number of unique random numbers")
Exit Sub
End If
For Each Rng In randomrange
randnum = Int((upperbound – lowerbound + 1) * Rnd + lowerbound)
Do While Application.WorksheetFunction.CountIf(randomrange, randnum) >= 1
randnum = Int((upperbound – lowerbound + 1) * Rnd + lowerbound)
Loop
Rng.Value = randnum
Next
End Sub

view raw

RNG

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Source: www.access-excel.tips

Frequently Asked Questions

What are the different methods to generate random numbers?

There are two methods of generating random numbers: True-Random Method and Psuedo-Random Method.

What is True Random Method?

True random numbers use physical phenomena like atmospheric noise, thermal noise, and other quantum phenomena. It generates true random numbers.

What is Pseudo-Random Method?

A pseudo-random method uses an algorithm for generating a sequence of numbers. Usually, computer-based random number generators always use the pseudo-random method. Moreover, the numbers generated by the pseudo-random method are not truly random.

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