Excel BIN2HEX Function: Convert Binary Numbers to Hexadecimal

The BIN2HEX function in Excel converts a binary number (base-2) into a hexadecimal number (base-16). This function is especially useful in computer science, digital electronics, networking, and programming applications.

What Does the BIN2HEX Function Do?

The BIN2HEX function takes a binary number containing only 0s and 1s and converts it into its hexadecimal equivalent.

For example:

• Binary 1010 becomes hexadecimal A
• Binary 11111111 becomes hexadecimal FF

This function belongs to Excel’s Engineering Functions category.

Syntax of the BIN2HEX Function

=BIN2HEX(number, [places])

Arguments:

• number – The binary number you want to convert.
• places – Optional. Specifies the number of characters to use in the result.

Note: The binary number can contain up to 10 binary digits.

Example: Basic Usage

If cell A1 contains:

1010

Using the formula:

=BIN2HEX(A1)

Returns:

A

Because binary 1010 equals hexadecimal A.

More BIN2HEX Examples

Binary Number	Formula	Result
1111	=BIN2HEX("1111")	F
101010	=BIN2HEX("101010")	2A
11111111	=BIN2HEX("11111111")	FF
100000000	=BIN2HEX("100000000")	100

Using the Places Argument

The optional places argument pads the hexadecimal result with leading zeros.

Example:

=BIN2HEX("1010",4)

Returns:

000A

This is useful when working with fixed-length hexadecimal values.

Common BIN2HEX Errors

#NUM! Error

You may see a #NUM! error if:

• The binary number contains digits other than 0 or 1
• The binary number exceeds 10 digits
• The places argument is invalid

Example:

=BIN2HEX("1020")

Returns:

#NUM!

Using BIN2HEX with Other Functions

Example: Remove Extra Spaces Before Conversion

=BIN2HEX(TRIM(A1))

This ensures clean binary input before conversion.

Difference Between BIN2HEX and HEX2BIN

Function	Purpose
BIN2HEX	Converts binary to hexadecimal
HEX2BIN	Converts hexadecimal to binary

These functions are commonly used together in digital systems and programming workflows.

Important Notes

• BIN2HEX accepts a maximum of 10 binary digits
• Only binary digits (0 and 1) are allowed
• The places argument must be greater than zero
• The function belongs to Excel’s Engineering Functions category

Conclusion

The Excel BIN2HEX function provides a quick and efficient way to convert binary numbers into hexadecimal format. It is especially useful in computer science, electronics, and networking applications where hexadecimal notation is commonly used.

Combine BIN2HEX with functions like BIN2DEC, HEX2BIN, and DEC2HEX for advanced number system conversions in Excel.

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