What is a decimal number?

A decimal number is a base-10 number system used in everyday arithmetic, consisting of digits 0 through 9.

How do I convert a decimal number to binary?

To convert a decimal number to binary, repeatedly divide it by 2 and record the remainders in reverse order. Our tool automates this process instantly.

What is BCD (Binary-Coded Decimal)?

BCD represents each decimal digit separately in a 4-bit binary form. For example, the decimal number 42 is represented in BCD as 0100 0010.

Can this tool convert large numbers?

Yes! The tool supports large numbers and high precision, allowing conversions for scientific and engineering purposes.

Is there a limit to the number of conversions I can perform?

No, you can use this tool for unlimited conversions at no cost.

Decimal Converter

Convert decimal numbers to various formats including binary, hexadecimal, octal, and more.

Decimal Converter

Group Size

Show Steps

Signed Numbers

Input

Output

Example Numbers

Format Guide

BCD Format

• Each digit is 4 bits
• Range: 0-9 per digit
• Example: 42 → 0100 0010

Binary Format

• 8-bit: 0-255
• 16-bit: 0-65535
• Signed: Two's complement

Roman Numerals

• Range: 1-3999
• Basic: I, V, X, L, C, D, M
• Subtractive: IV, IX, XL, XC

Common Values

• Byte: 255 (0xFF)
• Word: 65535 (0xFFFF)
• IPv4: 0-4294967295

Quick Actions

Powerful Decimal Conversion Tool

Easily convert decimal numbers to binary, hexadecimal, octal, BCD, and other numerical formats with accuracy.

Accurate Decimal Conversions

Convert decimal numbers to various formats, including binary, hexadecimal, octal, and more, with high precision.

Multiple Number Systems Supported

Easily switch between number systems such as Binary, BCD, Gray Code, Roman Numerals, and Scientific Notation.

Customizable Settings

Adjust precision, grouping, and signed number representation to meet your specific needs.

Step-by-Step Explanations

Understand each conversion process with detailed step-by-step breakdowns, perfect for learning and verification.

Optimized for Performance

Instant calculations with minimal load time, making it ideal for students, engineers, and developers.

How to Use the Decimal Converter

Step 1

Enter the decimal number you want to convert in the input field. You can enter positive or negative numbers, including floating-point values.

Step 2

Choose the desired conversion format such as Binary, Hex, Octal, Roman Numerals, or Scientific Notation. Adjust settings like precision and grouping as needed.

Step 3

Click the 'Convert' button to process the number. The tool will instantly display the converted value.

Step 4

Review the detailed step-by-step explanation to understand how the conversion was performed.

Step 5

Copy the result for use in your calculations, programming, or reports.

Frequently Asked Questions

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