Hex to Decimal Converter

Free online Hex to Decimal Converter that runs directly in your browser.

Secure (SSL)

Client-Side Processing

100% Free

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Instructions

1

Enter data
Enter content, paste text or load a file from disk.
2

Click the button
The tool will immediately process your data in the browser.
3

Get the result
Copy the finished text or save the file to your device.

                                                function runTool() {

                                                  return "Result ready in 0.1s";

                                                }

Conversion direction

Input System

Output system

Result format UPPERCASE (HEX) group (bytes / 8 bits) add the prefix 0x / 0b / 0o

We accept the prefixes 0x, 0b, 0o, color grid and readability separators (space, _, :, -).

HEX → DEC Hexadecimal → decimal DEC → HEX Decimal → hexadecimal

HEX values (one per line)

0 characters

Result

Enter the values and click "Convert" to see the result.

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HEX to Decimal Converter Online - Complete Guide to Hexadecimal Numbers

HEX to Decimal Converter helps you convert any hexadecimal number to decimal in seconds. Just enter the value in HEX format, click the convert button and you immediately receive the result in the known decimal number system, without manual calculations and the risk of error.

Start HEX to Decimal Converter View HEX FAQ

HEX to Decimal Converter Hexadecimal Conversion Online Hex Converter Hexadecimal System in Programming

Introduction to HEX to Decimal Conversion

Hexadecimal numbers are commonplace in programming, electronics and system administration, but for many people they remain unintuitive. The decimal system, on the other hand, is the one we use every day in life, finances and basic mathematics. The HEX to Decimal converter combines these two worlds, automatically converts hexadecimal values to decimal and allows you to focus on the logic of your work, not on tedious calculations.

Our tool has been designed so that anyone can use it. You enter a HEX number, click a button, and instantly get a decimal result that you can use in your code, documentation, or analysis.

Hexadecimal and Decimal Basics

To fully understand how the converter works, it's worth recalling how the number systems themselves work. This is not mandatory to use the tool, but it helps a lot in understanding the results.

Decimal System

The decimal system is the base 10 positional system that we use every day. It uses the digits 0 to 9, and each position in the number is a power of 10:

123 (decimal) = 1 * 10² + 2 * 10¹ + 3 * 10⁰ = 100 + 20 + 3

Hexadecimal (HEX)

System hexadecimal has base 16 and uses sixteen symbols:

0 1 2 3 4 5 6 7 8 9 A B C D E F

Where:

A = 10
B = 11
C = 12
D = 13
E = 14
F = 15

Each position in the HEX number is a successive power of 16, for example:

1A (HEX) = 1 * 16¹ + 10 * 16⁰

Why is hexadecimal so popular in in computer science

HEX is a concise way of writing large numbers, which in the binary system consist of many zeros and ones. One hexadecimal digit corresponds to exactly four bits, making it human-readable while still being close to what the computer actually processes.

System	Example	Length of writing the same number	Main use
Binary	0001 1010	8 characters	Internal representation in the computer
HEX	1A	2 characters	Programming, addresses, registers
Decimal	26	2 characters	Everyday math, displaying values

With the HEX to Decimal converter, you can quickly switch from a notation convenient for the computer and programmer to a form convenient for analysis, reporting, and decimal calculations.

How the HEX to Decimal converter works step by step

Underneath, the converter performs the exact same calculations that you could do by hand, but it does it instantly and without error.

Step 1. Entering a hexadecimal number

In the form field, enter a number in HEX format, for example:

1A
FF
2A3
0x7F(a common entry with a prefix)

The converter can ignore unnecessary prefixes like<