Data Types

The following table summarizes the Visual Basic data types.

Open table as spreadsheet

Type	Size	Values
Boolean	2 bytes	True or False
Byte	1 byte	0 to 255 (unsigned byte)
SByte	1 byte	-128 to 127 (signed byte)
Char	2 bytes	0 to 65,535 (unsigned character)
Short	2 bytes	-32,768 to 32,767
UShort	2 bytes	0 through 65,535 (unsigned short)
Integer	4 bytes	-2,147,483,648 to 2,147,483,647
UInteger	4 bytes	0 through 4,294,967,295 (unsigned integer)
Long	8 bytes	-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
ULong	8 bytes	0 through 18,446,744,073,709,551,615 (unsigned long)
Decimal	16 bytes	0 to +/-79,228,162,514,264,337,593,543,950,335 with no decimal point 0 to +/-7.9228162514264337593543950335 with 28 places
Single	4 bytes	-3.4028235E+38 to -1.401298E-45 (negative values) 1.401298E-45 to 3.4028235E+38 (positive values)
Double	8 bytes	-1.79769313486231570E+308 to -4.94065645841246544E-324 (negative values) 4.94065645841246544E-324 through 1.79769313486231570E+308 (positive values)
String	variable	Depending on the platform, approximately 0 to 2 billion Unicode characters
Date	8 bytes	January 1, 0001 0:0:00 to December 31, 9999 11:59:59 pm
Object	4 bytes	Points to any type of data.
Structure	variable	Structure members have their own ranges.