Excel DECIMAL Function: Syntax, Examples & Tips

The DECIMAL function converts numbers from a specified base (radix) to decimal format, allowing for easy numerical analysis in Excel.
Excel
=DECIMAL(text, radix)

One free generation or explanation per browser, shared across Excel and Google Sheets. Account usage limits apply afterward.

Need more than a single DECIMAL formula? Try our free AI for Excel — it reads your entire spreadsheet, answers questions in plain English, and builds charts and analysis in the same chat.

On this page
  1. Parameters
  2. What is a DECIMAL Formula in Excel?
  3. A Practical Example
  4. DECIMAL Formula
  5. Result of the Formula
  6. Why Use DECIMAL?
  7. Key Takeaways:
  8. Example use case

Parameters

text:
The text representation of a number in a given base (radix) that you want to convert to a decimal number.

radix:
The base of the number system for the text argument. It must be an integer between 2 and 36, inclusive, representing the base of the number system used in the text.

What is a DECIMAL Formula in Excel?

The DECIMAL function in Excel is a useful tool that allows you to convert a text representation of a number in a specified base (radix) into a decimal number. This function is particularly handy when working with numbers in different numeral systems, such as binary, octal, or hexadecimal, and you need to convert them into a base-10 format for calculations or analysis.

In simpler terms, the DECIMAL function helps you transform numbers from various bases into a standard decimal format, making it easier to work with numerical data.

A Practical Example

Imagine you are working on a project that involves binary numbers, and you have the following data in an Excel spreadsheet:

Binary Data Table:

Binary NumberDescription
1010A binary representation of 10
1111A binary representation of 15
1001A binary representation of 9
1100A binary representation of 12
10000A binary representation of 16

You want to convert these binary numbers into their decimal equivalents.

DECIMAL Formula

To convert the binary number "1010" into decimal, you would use the DECIMAL formula as follows:

Excel
=DECIMAL(A2, 2)

Breakdown of the Formula:

  • A2: This is the cell containing the binary number you want to convert.
  • 2: This is the base of the number system you are converting from (in this case, binary).

Result of the Formula

When you apply the formula, it converts the binary number "1010" into its decimal equivalent. The output would be:

Binary NumberDecimal Equivalent
101010
111115
10019
110012
1000016

Here, the binary number "1010" is converted to decimal as 10.

Why Use DECIMAL?

The DECIMAL function is particularly useful when you need to work with numbers in different bases and want to perform calculations in a standard decimal format. It allows you to easily convert and manipulate data without manual conversion, streamlining your workflow.

Key Takeaways:

  • DECIMAL: Converts a number from a specified base to decimal format.
  • Efficient Data Conversion: Helps you quickly convert numbers from various numeral systems for calculations.
  • Common Use Cases: Ideal for programming, data analysis, and any scenario where you need to work with different number bases.

Understanding how to use the DECIMAL function can significantly enhance your data manipulation capabilities in Excel, enabling you to work seamlessly with numbers from various numeral systems.

Happy converting!

Example use case

You have a table where Column A contains hexadecimal color codes and you want to convert these codes into their decimal equivalents for better understanding and manipulation in your design software. You can use the DECIMAL function to convert each hexadecimal code into a decimal number. This allows for easier integration of color values into various applications and helps in maintaining consistency across design projects without the need for manual conversion.

Beyond the DECIMAL function: Better Analyst is a full Excel AI that goes well past individual formulas. Upload any spreadsheet and ask questions in plain English — you'll get formulas, data analysis, and charts back in seconds. It's a free AI Excel assistant that works with any .xlsx, .xls, or .csv file — no plugins, no Microsoft 365 required.

Don't have a spreadsheet yet? Use our free AI spreadsheet generator to turn a text prompt into a downloadable Excel file — a full AI Excel sheet maker that builds headers, columns, and formulas from your description.

Need more help with Excel formulas?

Create a free account for formula help, explanations, and spreadsheet analysis. Usage limits depend on your plan.

Explore all Excel formulas

Browse our complete library of Excel formula guides

Compare your options

Decide with evidence, not a sales pitch.

Open a neutral research prompt in the AI tool you already use. Compare capabilities, limitations, and fit before you choose.

  1. 01ChatGPTOpen a balanced comparison prompt in ChatGPT.
  2. 02ClaudeOpen the same research prompt in Claude.
  3. 03PerplexityResearch the comparison with linked web sources.

AI answers can be incomplete. Check source links, current pricing, and product documentation before deciding.