Hex to Decimal

Hex values are compact, but decimal is easier to discuss

The hex to decimal page is built for the moment when a value such as a byte, color component, address offset, register value, or error code needs to be read in base 10. Hexadecimal is efficient for machines and programmers, but decimal is the format most reports, spreadsheets, tickets, and classroom answers expect.

Use this page when the source value is already hexadecimal and the next step is a plain decimal integer. The converter accepts common developer notation such as uppercase letters, lowercase letters, and optional 0x prefixes, then returns one decimal result per input value.

How to convert hex to decimal cleanly

1. Paste one hexadecimal value, or paste several values separated by spaces, commas, or line breaks.
2. Keep only the digits 0-9 and letters A-F unless the value uses the supported 0x prefix.
3. Read the decimal output line by line, keeping the same order as the original input.
4. Copy the result only after checking that the direction is hex to decimal, not decimal to hex.
5. If the source value is a fixed-width signed integer, decide the bit width before interpreting the sign.

Hex to decimal examples

Input rules for this page

A valid hexadecimal integer uses base-16 digits. The letters A through F represent decimal values 10 through 15, so a value like 2A is not two decimal digits; it is two base-16 positions. The converter validates those symbols before calculating the result.

Separators are treated as boundaries between separate values. If you paste labels, comments, colons, quotes, or units, remove them first. The page reports invalid input instead of silently guessing because a single unexpected character can change the meaning of a low-level value.

How the math works

Hexadecimal is positional. In FF, the right F means 15 ones and the left F means 15 sixteens, so the total is 15 x 16 + 15 = 255. The same pattern scales to longer values: each step to the left multiplies the place value by another 16.

The converter uses integer arithmetic rather than floating-point rounding, which matters for long identifiers and high memory addresses. Very large inputs are displayed as full decimal integers so every digit remains visible.

Good uses for hex to decimal

• Turning log values into numbers that are easier for non-specialists to compare.
• Checking byte, register, and mask examples before adding them to documentation.
• Converting database or API identifiers that are stored in compact base-16 form.
• Verifying classroom and certification exercises that ask for a base-10 answer.

Accuracy notes

Hex to decimal conversion does not decide signedness by itself. The visible value FF can be 255 as an unsigned byte or -1 in an 8-bit two's-complement context. This page returns the mathematical integer unless you explicitly include a minus sign.

If your destination system expects a prefix or a fixed width, add that formatting after conversion. Decimal output normally does not use leading zeroes, but technical tables sometimes require a fixed number of digits for alignment.

Related tools

If this page is close but not exactly the operation you need, the related converters below cover adjacent intents without mixing every feature into one crowded interface. You can move from hex to decimal to Binary to Decimal, Decimal to Hex, Binary Converter, Hex Converter. Keeping each page centered on one core task makes the tool faster to use and makes the explanation easier to follow.

Frequently asked questions

Does the converter support 0x prefixes?

Yes. Values such as 0xFF and FF produce the same decimal result.

Can I paste more than one hex value?

Yes. Separate values with spaces, commas, semicolons, or line breaks.

Why does FF return 255 instead of -1?

The page returns the unsigned mathematical value. Signed interpretation requires a bit width, such as 8, 16, or 32 bits.