Template:DataTypeTable

Numerical types

Type Name	Type suffix symbol	Minimum value	Maximum value	Size in Bytes
_BIT	`	-1	0	1/8
_BIT * n	`n	-128	127	n/8
_UNSIGNED _BIT	~`	0	1	1/8
_BYTE	%%	-128	127	1
_UNSIGNED _BYTE	~%%	0	255	1
INTEGER	%	-32,768	32,767	2
_UNSIGNED INTEGER	~%	0	65,535	2
LONG	&	-2,147,483,648	2,147,483,647	4
_UNSIGNED LONG	~&	0	4,294,967,295	4
_INTEGER64	&&	-9,223,372,036,854,775,808	9,223,372,036,854,775,807	8
_UNSIGNED _INTEGER64	~&&	0	18,446,744,073,709,551,615	8
SINGLE	! or none	-2.802597E-45	+3.402823E+38	4
DOUBLE	#	-4.490656458412465E-324	+1.797693134862310E+308	8
_FLOAT	##	-1.18E−4932	+1.18E+4932	32(10 used)
_OFFSET	%&	-9,223,372,036,854,775,808	9,223,372,036,854,775,807	Use LEN
_UNSIGNED _OFFSET	~%&	0	18,446,744,073,709,551,615	Use LEN
_MEM	none	combined memory variable type	N/A	Use LEN

Note: For the floating-point numeric types SINGLE (default when not assigned), DOUBLE and _FLOAT, the minimum values represent the smallest values closest to zero, while the maximum values represent the largest values closest to ±infinity. OFFSET dot values are used as a part of the _MEM variable type in QB64 to return or set the position in memory.

String text type

Type Name	Type suffix symbol	Minimum length	Maximum length	Size in Bytes
STRING	$	0	2,147,483,647	Use LEN
STRING * n	$n	1	2,147,483,647	n

Note: For the fixed-length string type STRING * n, where n is an integer length value from 1 (one) to 2,147,483,647.