HEX to Decimal Converter
Convert hexadecimal numbers to decimal instantly in your browser
I love short codes. But HEX values can feel like a secret language. If you have ever looked at a hex number and asked, “What does 1A3 mean?” – this is your tool.
The HEX to Decimal Converter lets you paste any hexadecimal number and get the decimal result instantly. Everything runs right in your browser. No login, no delay, no confusion.
What Is HEX?
HEX is short for hexadecimal. It is a base-16 number system. That means it uses sixteen digits:
0 1 2 3 4 5 6 7 8 9 A B C D E F
Each letter stands for a value:
- A = 10
- B = 11
- F = 15
So the HEX number 1A3 is really:
(1 × 16²) + (10 × 16¹) + (3 × 16⁰) = 256 + 160 + 3 = 419
That math gets old fast. This tool does it for you.
What This Tool Does
You paste your HEX value into the input box. The tool checks if it is valid, converts it into decimal using base-16 rules, and gives you the result.
No math. No mistakes. No extra steps.
Input and Output Examples
Example 1
HEX: 1A3
Decimal: 419
Example 2
HEX: FF
Decimal: 255
Why Convert HEX to Decimal?
You will run into HEX values in:
- Color codes (#FFFFFF)
- Memory addresses
- Microcontroller registers
- Web debugging tools
- Error codes
- File headers
- MAC addresses
Many systems store numbers in HEX to save space or stay consistent with machine-level representation.
If you want to read them like a human, you need to convert them.
What to Expect
You get a clean two-box layout:
- Input for HEX
- Output for Decimal
The button does one job: convert.
The tool handles:
- Uppercase and lowercase
- Optional 0x prefix
- Spaces and line breaks
If you mess up the input, it will tell you clearly.
How to Use (Step-by-Step)
- Copy your HEX value
- Paste it into the input box
- Click Convert to Decimal
- Copy the decimal result
- Click Clear All if needed
HEX numbers are everywhere, from color codes to memory dumps. But they are not readable until you convert them. This tool does that. Paste a value, get a number, move on. Fast. Simple. Accurate.
Common Mistakes to Avoid
- Do not use characters outside 0–9 and A–F
- Do not use full color hex like #FFFFFF directly (remove the # first)
- Do not paste mixed formats (like hex plus binary)
- Do not enter floating point numbers (this is for integers only)
Frequently Asked Questions (FAQs)
What is a HEX number?
A HEX number is a base-16 value that uses digits 0 to 9 and letters A to F.
Why use HEX instead of decimal?
HEX is compact and matches how computers store and process values internally.
How do I convert HEX to decimal?
Paste the HEX value into the tool and click convert. The decimal result appears instantly.
Can I paste values with 0x prefix?
Yes. The tool removes it automatically before converting.
Are lowercase HEX letters accepted?
Yes. A to F can be in lowercase or uppercase.
Can I convert color codes with this tool?
Yes, but only the numeric parts. You need to remove the # before pasting.
Is this tool accurate?
Yes. It uses JavaScript’s built-in base conversion with strict input validation.
Does it support floating-point HEX?
No. This tool handles integers only. Use a hex-float tool for advanced cases.
Can I use this offline?
Yes. Once loaded, it runs entirely in your browser.
Is my data stored or shared?
No. The tool is fully local and does not track or send anything.