Binary Converter

Convert between Binary, Decimal, and Hex. Works with big numbers via BigInt. Copy buttons included.

Offline-friendly (no uploads)

Accepts 0b/0x prefixes

Ignores spaces/underscores

Converter

Decimal

Example: 42 or -13

Binary

Example: 101010 or 0b1010_0110

Hex

Example: 2A or 0xDEAD_BEEF

Tips: You can paste from anywhere. Binary/hex may include spaces or underscores for readability. Decimal may be negative. For binary/hex, a leading minus sign is also accepted.

Ready. Type into any field.

Text ↔ Bytes

Converts text using UTF-8 bytes. Note: “ASCII for emojis” doesn’t exist — emojis are Unicode.

Emoji Picker

Shows Unicode + bytes

Text

Paste a sentence

Binary (8-bit bytes)

Output

Hex (bytes)

Output

Decimal (bytes)

Output

Decode Bytes → Text

Hex, binary, or decimal byte list

Decoded Text

Output