Decimal to Hexadecimal
Turn Decimal numbers into Hexadecimal in your browser. Every digit is converted exactly, even for very long values, and nothing is sent to a server.
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Binary
11111111Octal
377Decimal
255Hexadecimal
FFSpaces and underscores are ignored; 0b, 0o and 0x prefixes are supported.
Common conversions
| Decimal | Hexadecimal |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 4 | 4 |
| 8 | 8 |
| 10 | A |
| 16 | 10 |
| 255 | FF |
Leading zeros are dropped; longer values follow the same digit weights.
Frequently asked questions
How do I convert Decimal to Hexadecimal?
Each Decimal digit is multiplied by its place value, then the total is written using Hexadecimal digits. The table above shows the pattern for small values.
Can I convert fractions?
No. This converter works with unsigned integers only. Convert the integer part first and handle the fraction separately.
How large can the numbers be?
Up to 200 characters, which covers values far beyond 64-bit range. Precision stays exact because the conversion uses big integers.
Related conversions
Hexadecimal to Decimal Decimal to Binary Decimal to Octal Binary to Decimal Octal to Decimal Binary to Hexadecimal
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