Converting a Hex String to Decimal

Converting a Hex String to Decimal

I have a database of strings of hex numbers and I want to convert them to decimal. There doesn’t seem to be a function for it, but can you go the other way with the HEX function?

e.g. "A" converts to 10.e.g. "AB" needs to convert to 171.

Here’s a little snippet of code that will do the trick:

Sub Main()   Const Original = "AB12C"   Dim lngValue As Long   Dim strChar As String   Dim intCharValue As Integer   Dim i As Integer   For i = 0 To Len(Original) - 1      strChar = Mid(Original, Len(Original) - i, 1)      Select Case strChar      Case 0 To 9         intCharValue = Int(strChar)      Case "A", "B", "C", "D", "E", "F"         intCharValue = Asc(strChar) - 55      End Select      lngValue = lngValue + (intCharValue * (16 ^ i))   Next i   End Sub

When you’re finished, lngValue will have the decimal value of the constant specified.

On Feb. 18th, 2000, DevX reader Kevin Palmer suggested this alternative to the above code:

Sub Main()Const Original = "AB12C"Dim lngValue As Long lngValue = Val( "&H" & Original) End Sub 

On Feb. 22nd, 2000, DevX reader Eric Hood responded:

Basic has a conversion method available:

	d = val("&H" + h$)

where h$ = the hexidecimal valueand d = decimal value.

?val("&H3F") 63 

On Feb. 23rd, 2000, DevX reader Bryan Hapeman responded:

I was able to convert a hex string to decimal with the following code:

Dim Hex_String as StringDim Number as Double Number = val("&h" & Hex_String)

Doesn’t that work?

Share the Post:
XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes

ransomware cyber attack

Why Is Ransomware Such a Major Threat?

One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing

data dictionary

Tools You Need to Make a Data Dictionary

Data dictionaries are crucial for organizations of all sizes that deal with large amounts of data. they are centralized repositories of all the data in organizations, including metadata such as