## What Is RANDBETWEEN Formula In Excel?

The

RANDBETWEEN formula in Excelreturns a random integer between the range of any two specified numbers. And the function recalculates and returns a new random number every time the user opens or modifies the worksheet. TheRANDBETWEEN Excel formulais an inbuiltMath & Trigfunction, so we can insert the formula from the “Function Library” or enter it directly in the worksheet.

For example, the table below contains a list of new employees. Here, we will generate employee IDs for the new employees using the **RANDBETWEEN in Excel.**

Select cell **B2**, enter the formula **=RANDBETWEEN(100,200),** press “**Enter**”, and drag the formula from cell **B2 **to** B11** using the fill handle.

We get the output shown above. Here, we see that the new employee IDs are generated randomly between the two given numbers, **100** and **200**.

##### Table of contents

###### Key Takeaways

- The
**RANDBETWEEN Excel formula**results in generation of a random integer value between two given numbers. The function recalculates every time we open or update the worksheet. - We can use the
**RANDBETWEEN Excel formula**to update a cell with a random number, and also to fill a cell range with random numbers. But for that, we must select the required cell range, type the**RANDBETWEEN()**, and press**Ctrl**+**Enter**to execute it. - While the function generates random integers, we can use it to fill cells with random decimal values, dates, and characters, using the functions such as
**INDEX**,**CHOOSE**,**DATE, DATEVALUE, CHAR,**etc**.**

### RANDBETWEEN() Formula Syntax

The syntax of the **RANDBETWEEN Excel formula **is,

The arguments of the **RANDBETWEEN formula **are,

: The smallest integer in the range of random numbers needed. It will always be lesser than the*bottom*numeric value. It is a mandatory argument.*top*: The largest integer in the range of random numbers needed. It can be any number greater than the*top*numeric value. It is a mandatory argument.*bottom*

### How To Use RANDBETWEEN Excel Formula?

We can use the **RANDBETWEEN Excel formula **in 2 ways, namely,

**Access from the Excel ribbon.****Enter in the worksheet manually.**

#### Method #1 – Access from the Excel ribbon

Choose an empty cell → select the “**Formulas**” tab → go to the “**Function Library**” group → click the “**Math & Trig**” option drop-down → select the “**RANDBETWEEN**” function, as shown below.

The “**Function Arguments**” window appears. Enter the argument values in the “**Bottom**”, and the “**Top**” fields → click “**OK**”, as shown below.

#### Method #2 – Enter in the worksheet manually

- First, ensure we have the two values required to generate the random number.
- Then, select an empty cell for the output.
- Type
**=RANDBETWEEN(**in the cell. [Alternatively, type**=R**or**=RA**and double-click the**RANDBETWEEN**function from the Excel suggestions.] - Enter the arguments as cell values or excel cell references and close the brackets.
- Finally, press
**Enter**to execute the function.

Let us take a basic example to learn more about this function.

We will randomly generate numbers between the pairs of bottom and top numbers** using RANDBETWEEN in Excel.**

The following table contains a set of bottom and top numbers.

The steps to generate random numbers **using RANDBETWEEN Excel formula **are**,**

**Select cell C2, enter the formula =RANDBETWEEN(A2,B2), and press Enter. The result is some random number between 50 and 60, here, 56.****Drag the formula from cell C2 to C6 using the fill handle.**

We get the above result, i.e., the random numbers are generated in the selected cells between the number range of 50 to 60.

[**Note:**However, if we do not want the generated random numbers to update every time we make changes to the worksheet, then we can copy the values and paste them into the same column.]

[Alternatively, we can apply the**RANDBETWEEN()**from the**Formulas**tab. And for that, we can select the target cell and click**Formulas**→**Math & Trig**→**RANDBETWEEN**to open the**Function Arguments**window.

Next, enter the two**RANDBETWEEN()**argument values in the**Function Arguments**window.

And once we click**OK**in the**Function Arguments**window, a new random number will get generated in the target cell.]

### Examples

We will understand some advanced scenarios with **RANDBETWEEN Excel formula examples.**

#### Example #1

We will display ten random numbers, for the following empty table, in the cell range **A2:B6**, between **250** and **300**.

The steps to generate random numbers using **RANDBETWEEN formula **are**,**

**Step 1:**Select the cell range**A2:B6**, and enter the formula**=RANDBETWEEN(250,300).**

**Step 2:**Press**Ctrl**+**Enter**to execute the function.

We get the above output that shows the random number **279** repeated twice. It is not a **RANDBETWEEN formula error**, because if we require unique random numbers, double-click a target cell and recalculate the formula repeatedly till we get the desired outcome.

**Step 3**: Therefore, let us double-click cell**B6**, and press “**Enter**”, i.e., we are executing one of the formulas.

**Step 4**: Therefore, let us double-click cell**B6**, and press “**Enter**”, i.e., we are executing one of the formulas.And once we press**Enter**, all the cells with the**RANDBETWEEN()**get recalculated to give the below output with unique random numbers.

#### Example #2

We will generate random decimal numbers using the **RANDBETWEEN formula.**

The table below contains the minimum and maximum points one can score in each game round based on probability.

The steps to generate random scores using the **RANDBETWEEN Excel formula** are,

**Step 1:**Select cell**D2**, enter the formula, and press*=RANDBETWEEN(B2*100,C2*100)/100***Enter**.

We get the result shown below.

**Step 2:**Drag the formula from cell**D2**to**D6**using the fill handle.

We get the output shown above.

[**Output Observation:** Let us consider the cell **D6** formula to check how it works.

First, the cells B6 and C6 values get multiplied by **100**. So, the **bottom** and **top **argument values become **25000** and **50000**. Then the **RANDBETWEEN() **generates a random number between **25000** and **50000**, **28412**. Finally, the formula divides the randomly generated number **42544 **by **100** to return the random decimal number **284.12**.]

#### Example #3

We can use the **RANDBETWEEN Excel formula **to randomly get an order date in March from the source table.

The table below shows a list of products and their order dates.

The steps to generate random dates for March using the **RANDBETWEEN formula **with the **INDEX** Excel function are,

**Step 1:**Select cell**D2**, enter the formula, and press*=INDEX(A5:B8,RANDBETWEEN(1,4),2)***Enter**. We will get the following output.

**Step 2:**Select cell**D2**and set the**Number Format**in the**Home**tab as**Short Date**to see the output as a date value.

Once we change the number format to date, we will get the required date, as shown below.

[**Output Observation:** In this example, the **RANDBETWEEN() **returns the random number **3**, which lies between the specified **bottom** and **top** numbers **1 **and **4**. So, the **INDEX()** takes the **RANDBETWEEN() **output, **3**, as the **row_num** argument value, and the **column_num **is **2**. And thus, the **INDEX()** returns the date in the specified cell reference, row 3 and column 2, in the given cell range A5:B8,** 20-03-2022**.]

#### Example #4

We can use the **RANDBETWEEN formula** to generate random letters using **CODE() and **** CHAR Excel **function to assign a team to each player, with the teams being

**A**,

**B**,

**C**, and

**D.**

The below table contains a list of players.

The steps to use the **RANDBETWEEN Excel formula **with the **CHAR() **and **CODE()** are,

**Step 1:**Select cell**B2**, enter the formula, and press*=CHAR(RANDBETWEEN(CODE(“A”),CODE(“D”)))***Enter**.

**Step 2:**Drag the formula from cell**B2**to**B11**using the fill handle.

We get the above-generated letters.

[**Output Observation:** The first **CODE()** returns the code of the letter **A**, **65**, and the second one returns the code of the letter **D**, **68**. Next, the **RANDBETWEEN() **returns a random number between **65 **and **68**, which the **CHAR() **returns as the corresponding letter.

As the **bottom** and **top** arguments limit the codes between **65** to **68**, the **CHAR() **returns letters between **A **to **D**, the required teams.]

### Important Things To Note

- If we do not want the
**RANDBETWEEN()**to recalculate, we can select the cell containing the function and press**Ctrl**+**C**to copy the cell content. And then, we can press the shortcut keys**Alt**+**E**+**S**+**V**to paste special as a value. We can also double-click the cell containing the**RANDBETWEEN()**or click the Formula Bar and press**F9**as an alternative. - Sometimes the function might generate repetitive random numbers in multiple cells. Please do not consider it as a
**RANDBETWEEN Excel formula error**. We can recalculate the function multiple times till we get unique random values. - Ensure the
**bottom**argument value is less than the**top**argument value. Otherwise, the**RANDBETWEEN()**output will be the**#NUM!**error. - For incorrect argument data type, the
**RANDBETWEEN()**returns the**#VALUE!**error.

### Frequently Asked Questions (FAQs)

**1. How to use the RANDBETWEEN Excel formula to generate random dates?**

We can use the **RANDBETWEEN Excel formula** to generate random dates with the help of the Excel functions **DATE** or **DATEVALUE**.

For example, we will update the table with six random dates between 10/1/2022 and 10/20/2022.

The steps to use the **RANDBETWEEN()** with the **DATEVALUE()** are,**• Step 1: **Select the target cell range **A2:F2** and set the **Number Format** in the **Home** tab as **Short Date** to view the output as date values.**• Step 2: **Select the target cell range **A2:F2**, enter the formula ** =RANDBETWEEN(DATEVALUE(“1-Oct-2022”),DATEVALUE(“20-Oct-2022”))**, and press

**Ctrl**+

**Enter**, as shown below.

We get the generated random dates as shown below.

The

**DATEVALUE()**returns the serial number of the respective supplied dates. So thus, the

**RANDBETWEEN()**returns six random dates between the specified date values in the six selected target cells.

**2. Why is the RANDBETWEEN Excel formula not working?**

The **RANDBETWEEN Excel formula** is not working, perhaps because of the following reasons:**• **The supplied **bottom** argument value is more than the provided **top** argument value.**• **The supplied arguments have the wrong data type.

**3. Can we generate random numbers with no duplicates using the RANDBETWEEN Excel formula?**

We can generate random numbers with no duplicates using the **RANDBETWEEN Excel formula** with the **RANK.EQ** and **COUNTIF** functions.

For example, we must generate ten random numbers between 20 and 50.**• Step 1: **First, to apply the **RANDBETWEEN()**, select the cell range **A2:A11**, enter the formula ** =RANDBETWEEN(20,50)**, and press

**Ctrl**+

**Enter**to execute the function.

The random number

**22**appears thrice in the output, as shown below.

**• Step 2:**To avoid getting duplicate numbers, select cell range

**A2:A11**, press

**Ctrl**+

**C**, and then

**Alt**+

**E**+

**S**+

**V**to copy and paste special the values. Choose from the “

**Paste Special**” window, as shown.

And once we click

**OK**, we will see the values in the Formula Bar instead of the formulas.

**• Step 3:**Select cell

**B2**, enter the formula

**, and press**

*=19+RANK.EQ(A2,$A$2:$A$11)+COUNTIF($A$2:A2,A2)-1***Enter**.

**• Step 4:**Drag the formula from cell

**B2**to

**B11**using the fill handle.

[

**Output Observation:**Let us consider the cell B11 formula to see how it works. First, as the

**bottom**argument value is

**20**, we add

**19**to the result. Then the

**RANK.EQ()**returns the rank of value

**21**in the cell range A2:A11, as

**10**, with the ranking in descending order. And as the value

**21**occurs once in the cell range A2:A11, the

**COUNTIF()**returns the count as

**1**. Thus, the formula simplifies to return the value

**24**(

**19+10+1-1)**.

In the case of the value

**22**, in row 3, the

**COUNTIF()**returns

**1**. But, on the other hand, as the value appears again in rows 5 & 6, the

**COUNTIF()**in the cell B6 formula returns

**3**. So, with the

**RANK.EQ()**returning the same rank,

**7**, for the value

**22**, the formula returns unique values in rows 3, 5 and 6 target cells, B3, B5 and B6. Thus, in this way, we achieve a list of random numbers without duplicates.]

### Download Template

This article must help understand the **RANDBETWEEN Excel Formula**, with its formula and examples. We can download the template here to use it instantly.

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