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Hex to Decimal Converter

Convert Hex to Decimal instantly: 255 in hexadecimal is 255 in decimal. Free hex to decimal converter with formula, chart and examples.

255 in hexadecimal is 255 in decimal

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UnitSymbolValue

How to Convert Hex to Decimal

Read the digits as a base-16 number and rewrite the same whole number in base 10. 255 in hexadecimal is 255 in decimal. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for hexadecimal to decimal conversions, but you can switch either list to any of the 39 units in the Numbers Converter, or go the other way with the Decimal to Hex converter.

Hex to Decimal conversion chart

HexDecimal
0 base 160 base 10
1 base 161 base 10
2 base 162 base 10
3 base 163 base 10
4 base 164 base 10
5 base 165 base 10
6 base 166 base 10
7 base 167 base 10
8 base 168 base 10
9 base 169 base 10
A base 1610 base 10
B base 1611 base 10
C base 1612 base 10
D base 1613 base 10
E base 1614 base 10
F base 1615 base 10
10 base 1616 base 10
11 base 1617 base 10
12 base 1618 base 10
13 base 1619 base 10
14 base 1620 base 10
15 base 1621 base 10
16 base 1622 base 10
17 base 1623 base 10
18 base 1624 base 10
19 base 1625 base 10
1A base 1626 base 10
1B base 1627 base 10
1C base 1628 base 10
1D base 1629 base 10
1E base 1630 base 10
1F base 1631 base 10
20 base 1632 base 10
32 base 1650 base 10
40 base 1664 base 10
64 base 16100 base 10
7F base 16127 base 10
80 base 16128 base 10
FF base 16255 base 10
100 base 16256 base 10
1F4 base 16500 base 10
200 base 16512 base 10
3E8 base 161000 base 10
400 base 161024 base 10
1000 base 164096 base 10
FFFF base 1665535 base 10
7FFFFFFF base 162147483647 base 10

Common Hex to Decimal conversions

  • 255 in hexadecimal is 255 in decimal
  • A base 16 = 10 base 10
  • FF base 16 = 255 base 10
  • 100 base 16 = 256 base 10
  • FFFF base 16 = 65535 base 10
  • 7FFFFFFF base 16 = 2147483647 base 10

Popular numbers converters

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How to Use the Hex to Decimal Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How do I convert Hex to Decimal?

Read the digits as a base-16 number and rewrite the same whole number in base 10. For example, 255 in hexadecimal is 255 in decimal. Type any hexadecimal number in the converter above to get the decimal value instantly.

What is the Hex to Decimal formula?

Read the digits as a base-16 number and rewrite the same whole number in base 10..

What is A in decimal?

A in hexadecimal = 10 in decimal.

What is FF in decimal?

FF in hexadecimal = 255 in decimal.

What is 100 in decimal?

100 in hexadecimal = 256 in decimal.

What is FFFF in decimal?

FFFF in hexadecimal = 65535 in decimal.

What is 7FFFFFFF in decimal?

7FFFFFFF in hexadecimal = 2147483647 in decimal.

How do I convert Decimal back to Hex?

Use the swap button in the converter above, or open our Decimal to Hex converter. Read the digits as a base-10 number and rewrite the same whole number in base 16..

Is this Hex to Decimal converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert Hex to other numbers units?

Yes — pick any unit in the From and To lists above, or open the full Numbers Converter, which handles 39 numbers units.

Is the Hex to Decimal converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.