Convert hexadecimal to decimal, binary, octal and text — instantly, in both directions, with no digit limit and no signup.
Built to handle everything a developer, student or hardware engineer needs from a single page.
Hex, decimal, binary, octal and text stay in sync — type in any field and the rest update instantly.
Arbitrary-precision math means 128-bit keys and long hash values convert correctly, not just 32-bit integers.
Toggle two's complement mode with 8, 16, 32 or 64-bit width to correctly read negative hex values.
Paste a whole list of values and convert every line in one pass — no repeating single conversions.
Decode hex byte pairs straight into readable text, or encode any string back into hex.
Nothing you type is uploaded anywhere — all conversion happens locally in JavaScript.
Most hex tools convert one pair of bases at a time and stop at 32-bit integers.
| Feature | SEOTriggers | KeyCDN | RapidTables | Calculator.net | BinaryHexConverter |
|---|---|---|---|---|---|
| Hex ↔ Decimal ↔ Binary ↔ Octal ↔ Text | ✓ | ✗ | ✗ | ✗ | ✗ |
| Unlimited digit length | ✓ | ✗ | ✗ | ✗ | ✗ |
| Signed / two's complement | ✓ | ✗ | ✗ | ✗ | ✗ |
| Bulk / list conversion | ✓ | ✗ | ✗ | ✗ | ✗ |
| No ads on tool area | ✓ | ✓ | ✗ | ✗ | ✗ |
| Free, no signup | ✓ | ✓ | ✓ | ✓ | ✓ |
Type into Hex, Decimal, Binary, Octal or Text — any field works as the starting point.
The other four fields update in real time as you type, with no convert button to click.
Turn on Signed mode and choose a bit width if you're working with negative values.
Use the copy icon on any field, or switch to bulk mode to convert an entire list at once.
Common hex values and their decimal / binary equivalents.
| Hex | Decimal | Binary |
|---|
Type or paste the hexadecimal value into the Hex field. The Decimal field updates instantly using base-16 to base-10 conversion, with no page reload or button click needed.
Enter your hex value once and the Binary and Octal fields populate automatically alongside Decimal and Text, since every field on this page stays in sync in real time.
Yes. Turn on Signed mode and pick a bit width (8, 16, 32 or 64-bit) to interpret values using two's complement, which is how negative numbers are represented in hexadecimal in most programming languages.
No. Unlike calculator-style tools capped at 32 or 64-bit integers, this converter uses arbitrary-precision arithmetic, so values of any length convert correctly.
Yes. Use the bulk converter below the main tool to paste one value per line and convert an entire list to decimal, binary, octal or text in a single pass.
Yes. The Text field decodes hex byte pairs as UTF-8 characters, and typing text into that field encodes it back into hex automatically.