Signed & Unsigned Numbers

Fixed-width integers

Enter a decimal value for each type independently. Binary and hexadecimal show the stored bit pattern — two’s complement for signed types.

Signed values use two’s complement. Decimal entry is limited to each type’s range.

• 8-bit unsigned — 0 to 255 (0 to 2⁸ − 1)
• 8-bit signed — −128 to 127 (−2⁷ to 2⁷ − 1)
• 16-bit unsigned — 0 to 65,535 (0 to 2¹⁶ − 1)
• 16-bit signed — −32,768 to 32,767 (−2¹⁵ to 2¹⁵ − 1)
• 32-bit unsigned — 0 to 4,294,967,295 (0 to 2³² − 1)
• 32-bit signed — −2,147,483,648 to 2,147,483,647 (−2³¹ to 2³¹ − 1)
• 64-bit unsigned — 0 to 18,446,744,073,709,551,615 (0 to 2⁶⁴ − 1)
• 64-bit signed — −9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (−2⁶³ to 2⁶³ − 1)

Related: Bits, Bytes and More, Boolean Truth Tables, Byte Storage Order, Number Base Conversions, Data Storage, Character Sets.