Hex to Decimal

What is Hex?

Hexadecimal, usually shortened to "hex", is a base-16 number system that uses the digits 0–9 and the letters A–F to represent the values 10–15. In computing, hex is the most common way to write raw bytes because every byte (0–255) fits into exactly two hex digits — for example, the decimal 255 becomes FF and the decimal 72 becomes 48. Hex strings are often prefixed with 0x (e.g. 0xFF) to make the base explicit.

Because each hex digit represents 4 bits, a pair of hex digits always represents exactly one byte. This makes hex a compact, unambiguous and human-readable way to inspect and exchange numeric data in source code, documentation and technical specifications.

What is Decimal?

Decimal is the base-10 number system that humans use every day. It uses ten digits — 0 through 9 — and each position in a decimal number represents a power of 10. Decimal is the natural way we count, measure and record quantities, which is why it is the default number system in mathematics, commerce and everyday life.

In computing, decimal is how you usually think about numbers: memory addresses shown in debuggers, colour component values (0–255) and file sizes are all commonly displayed in decimal. Converting from hex to decimal lets you translate the compact programmer-friendly form into the human-readable form that matches how we naturally reason about quantities.

Hex vs Decimal

Hex and decimal are two ways of writing the same underlying integer, but they use different bases. Hex is base 16 — each digit represents a power of 16, so FF means 15×16 + 15 = 255. Decimal is base 10 — each digit represents a power of 10, so 255 means 2×100 + 5×10 + 5. Both refer to the exact same value; only the notation differs.

Hex is the better choice when you work with bytes, memory addresses or bitwise values, because it aligns cleanly with the binary representation the machine uses. Decimal is the better choice when you need to communicate quantities to humans — file sizes, counts and measurements. Converting from hex to decimal lets you express a compact hex value as the verbose decimal number that humans understand at a glance.

When to convert Hex to Decimal

Converting hex to decimal is useful in several practical scenarios:

• Reading source code. Constants written as 0x... literals are easier to understand once converted to decimal.
• Memory addresses. Convert a hex address from a debugger into a decimal offset for calculation.
• Colour values. Convert a two-digit hex colour component back to its 0–255 decimal equivalent.
• Network analysis. Translate hex packet fields into decimal to compare against documentation.
• Education. Verify base-conversion exercises and understand the relationship between bases.

Whenever you have a hex value and need the human-readable decimal form, this converter gives it to you instantly.

How to convert Hex to Decimal

Converting hex to decimal with this tool takes a second and happens entirely in your browser. No upload, no sign-up, no installation. Follow these steps:

1. Paste your hex values. Enter one value per line, or separate multiple values with spaces or commas. A leading 0x prefix is accepted and stripped automatically.
2. Click "Convert". Each hex value is converted to its decimal equivalent, one result per line.
3. Copy the result. Click "Copy" to copy the decimal values to your clipboard, then paste them where you need them.

Because every step runs locally with JavaScript, your data never leaves your browser. This makes the tool safe for sensitive values.