🔢 Number System Converter

Convert Decimal, Binary, Octal, Hexadecimal & More

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📊 Common Number System Reference

Decimal	Binary	Octal	Hexadecimal
0	0	0	0
8	1000	10	8
10	1010	12	A
15	1111	17	F
16	10000	20	10
255	11111111	377	FF
256	100000000	400	100

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Frequently Asked Questions

Q: How to convert decimal to binary?

Divide by 2 repeatedly, collect remainders. Example: 13÷2=6R1, 6÷2=3R0, 3÷2=1R1, 1÷2=0R1. Read remainders bottom-up: 1101. Or use this calculator!

Q: What is hexadecimal used for?

Hex is used for web colors (#FF5733), memory addresses, and programming. 1 hex digit = 4 binary bits. #FFFFFF = white, #000000 = black, #FF0000 = red.

📊 Common Number System Reference

🔢 Convert Any Number

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