Data type

Storage size

Range

Byte

1 byte

0 to 255

Boolean

2 bytes

True or False

Integer

2 bytes

-32,768 to 32,767

Long
(long integer)

4 bytes

-2,147,483,648 to 2,147,483,647

Single
(single-precision floating-point)

4 bytes

-3.402823E38 to -1.401298E-45 for negative values;
1.401298E-45 to 3.402823E38 for positive values

Double
(double-precision floating-point)

8 bytes

-1.79769313486231E308 to
-4.94065645841247E-324 for negative values; 4.94065645841247E-324 to 1.79769313486232E308 for positive values

Currency
(scaled integer)

8 bytes

-922,337,203,685,477.5808 to 922,337,203,685,477.5807

Decimal

14 bytes

+/-79,228,162,514,264,337,593,543,950,335 with no decimal point;
+/-7.9228162514264337593543950335 with 28 places to the right of the decimal;
smallest non-zero number is +/-0.0000000000000000000000000001

Date

8 bytes

January 1, 100 to December 31, 9999

Object

4 bytes

Any Object reference

String
(variable-length)

10 bytes + string length

0 to approximately 2 billion

String
(fixed-length)

Length of string

1 to approximately 65,400

Variant
(with numbers)

16 bytes

Any numeric value up to the range of a Double

Variant
(with characters)

22 bytes + string length

Same range as for variable-length String

User-defined
(using Type)

Number required by elements

The range of each element is the same as the range of its data type.