Base Converter

Q: Why does hexadecimal use letters A-F?

Hexadecimal (base-16) needs 16 unique symbols for digits 0-15. Since we only have numeric symbols 0-9, letters A-F are used to represent values 10-15. A=10, B=11, C=12, D=13, E=14, F=15. This allows any 4-bit binary value (0000 to 1111) to be represented by a single hexadecimal digit, making hex a convenient shorthand for binary data.

Q: What is the maximum base supported?

This converter supports bases from 2 to 36. Base-36 is the maximum because it uses all 10 numeric digits (0-9) plus all 26 letters of the English alphabet (A-Z) to represent values 0-35. Bases higher than 36 would require additional symbols beyond the standard alphanumeric characters.

Convert integers between any number bases from binary (base-2) to base-36 with multi-base preview, step-by-step conversion breakdown, and digit position analysis.

Free to useNo sign-up requiredUpdated Jan 2026

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Quick Examples

Enter Number BASE-10

From Base

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About Base Converter

Welcome to the Base Converter, your comprehensive tool for converting numbers between any numeral system from base-2 (binary) to base-36. Whether you are a programmer working with hexadecimal memory addresses, a student learning number systems, or an engineer dealing with binary and octal representations, this converter provides instant, accurate conversions with detailed step-by-step explanations.

What is a Number Base?

A number base (also called radix) is the number of unique digits, including zero, used to represent numbers in a positional numeral system. The base determines how place values increase from right to left. Each position represents a power of the base, starting from base^0 on the rightmost digit.

Common Number Bases

Base	Name	Digits Used	Common Use
2	Binary	`0, 1`	Computer hardware, digital logic
8	Octal	`0-7`	Unix file permissions, legacy systems
10	Decimal	`0-9`	Everyday counting, human-readable
16	Hexadecimal	`0-9, A-F`	Memory addresses, colors, MAC addresses
36	Base-36	`0-9, A-Z`	Compact encoding, URL shorteners

How Base Conversion Works

Converting a number between bases involves two main steps:

Step 1: Convert to Decimal (Base-10)

Multiply each digit by its positional value (base raised to the power of position) and sum the results. For example, binary 1011 converts to decimal as:

1 × 2³ = 8
0 × 2² = 0
1 × 2¹ = 2
1 × 2⁰ = 1
Total: 8 + 0 + 2 + 1 = 11

Step 2: Convert from Decimal to Target Base

Repeatedly divide the decimal number by the target base and collect the remainders in reverse order. For example, converting decimal 11 to hexadecimal:

11 ÷ 16 = 0 remainder 11 (B)
Result: B

How to Use This Converter

Enter your number: Type the number using valid digits for the source base. For bases above 10, use letters A-Z for values 10-35.
Select source base: Choose the base of your input number (2-36) or use quick preset buttons.
Select target base: Choose the base you want to convert to (2-36).
Click Convert: View the result along with multi-base preview, step-by-step breakdown, and digit analysis.

Understanding the Results

Conversion Result: The primary converted value in the target base
Multi-Base Preview: See your number in Binary, Octal, Decimal, and Hexadecimal simultaneously
Step-by-Step Breakdown: Detailed explanation of the conversion process
Digit Position Analysis: Table showing each digit's value and its contribution to the total

Supported Features

Convert between any base from 2 to 36
Support for negative numbers (signed magnitude)
Case-insensitive input (a-f or A-F for hexadecimal)
Real-time multi-base preview
One-click copy to clipboard
Mobile-responsive design

Applications of Base Conversion

Programming and Development

Programmers frequently convert between binary, hexadecimal, and decimal when working with memory addresses, bitwise operations, color codes (RGB in hex), and debugging binary data.

Computer Science Education

Understanding number bases is fundamental to computer science. Binary represents how computers store and process data, while hexadecimal provides a compact way to represent binary values.

Digital Electronics

Digital circuit designers work extensively with binary and hexadecimal when analyzing logic gates, memory chips, and microprocessors.

Network Administration

MAC addresses use hexadecimal, IP subnetting often involves binary calculations, and Unix file permissions use octal notation.

Frequently Asked Questions

What is a number base or radix?

A number base (or radix) is the number of unique digits used to represent numbers in a positional numeral system. For example, base-10 (decimal) uses digits 0-9, base-2 (binary) uses only 0 and 1, base-16 (hexadecimal) uses 0-9 and A-F. The base determines how place values increase: in base-10, each position is worth 10 times more than the position to its right.

How do I convert a number from one base to another?

To convert between bases: First, convert the source number to base-10 by multiplying each digit by its positional value and summing. Then, convert from base-10 to the target base by repeatedly dividing by the new base and collecting remainders.

What bases are commonly used in computing?

The most common bases in computing are: Binary (base-2) - the fundamental language of computers; Octal (base-8) - groups 3 binary digits; Decimal (base-10) - human-readable; Hexadecimal (base-16) - widely used for memory addresses and colors.

Why does hexadecimal use letters A-F?

Hexadecimal needs 16 unique symbols for digits 0-15. Since we only have numeric symbols 0-9, letters A-F represent values 10-15. This allows any 4-bit binary value to be represented by a single hex digit.

Can I convert negative numbers between bases?

Yes, this converter supports negative numbers. The negative sign is preserved during conversion using signed magnitude representation.

What is the maximum base supported?

This converter supports bases from 2 to 36. Base-36 uses all 10 numeric digits (0-9) plus all 26 letters (A-Z) to represent values 0-35.

Related Resources

Reference this content, page, or tool as:

"Base Converter" at https://MiniWebtool.com/base-converter/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: Jan 26, 2026

Developer API available: Run this tool from your app, automation, or agent with one JSON HTTP request. View API docs