About

This Decimal to Hex Converter is engineered for high-precision computing tasks, utilizing BigInt logic to bypass standard 64-bit floating-point limitations. Unlike basic converters that fail at 2⁵³ - 1, this tool handles integers of arbitrary length, making it suitable for cryptography, memory address calculation, and low-level protocol debugging.

Hexadecimal (Base-16) serves as the lingua franca of binary data, compressing 8 bits (a byte) into exactly two distinct characters. This tool includes advanced features such as Endianness Swapping (Big-Endian ↔ Little-Endian), automatic Byte Spacing, and real-time ASCII Visualization to decode raw data streams instantly.

Formulas

The conversion from Hexadecimal to Decimal uses polynomial expansion, where each digit h_i is multiplied by 16 raised to the power of its position index i (from right to left, starting at 0):

Value₁₀ = n∑i=0 h_i ⋅ 16ⁱ

Where h_i ∈ { 0..9, A..F }. For example, converting 0x2A:

2A₁₆ = (2 × 16¹) + (10 × 16⁰) = 32 + 10 = 42₁₀

Reference Data

Val (Dec)	Val (Hex)	Binary (Base-2)	Type / Limit
0	0x00	0000 0000	Null Byte
255	0xFF	1111 1111	Max Uint8 (1 Byte)
65,535	0xFFFF	1111...1111	Max Uint16 (2 Bytes)
16,777,215	0xFFFFFF	1111...1111	RGB Color Max
4,294,967,295	0xFFFFFFFF	1111...1111	Max Uint32 (4 Bytes)
9,007,199,254,740,991	0x1FFFFFFFFFFFFF	...	Max Safe Integer (JS)
18,446,744,073,709,551,615	0xFFFFFFFFFFFFFFFF	...	Max Uint64 (8 Bytes)
3,402... (39 digits)	0xFF... (32 chars)	...	IPv6 Address Space

Frequently Asked Questions

Standard JavaScript numbers use IEEE 754 double-precision, which loses integer precision after 2^53 - 1. This tool uses BigInt (Arbitrary-precision arithmetic), ensuring every digit is preserved regardless of magnitude.

It refers to the byte order. Big-Endian stores the "Most Significant Byte" (MSB) first (e.g., 0A 0B 0C 0D). Little-Endian stores the "Least Significant Byte" (LSB) first (e.g., 0D 0C 0B 0A). Intel/AMD processors are typically Little-Endian, while network protocols are Big-Endian.

Yes. This tool processes signed integers. Inputting "-255" in decimal will produce "-FF" in hexadecimal. Note that in low-level memory views (Two's Complement), negative numbers are often represented by their inverted bit pattern, but mathematically, the sign is preserved here.

Absolutely. Enter the R, G, B values as a single integer or calculate them individually. If the resulting Hex code is 6 or 8 characters long, a color preview will appear automatically.