| Visual Basic type |
Common language runtime type structure |
Nominal storage allocation |
Value range |
| Boolean |
Boolean |
Depends on implementing platform |
TrueFalse |
| Byte |
Byte |
1 byte |
0 through 255 (unsigned) |
| Char (single character) |
Char |
2 bytes |
0 through 65535 (unsigned) |
| Date |
class=SpellE>DateTime |
8 bytes |
0:00:00 (midnight) on January 1, 0001 through 11:59:59 PM on December 31, 9999 |
| Decimal |
Decimal |
16 bytes |
0 through +/-79,228,162,514,264,337,593,543,950,335 (+/-7.9…E+28) † with no decimal point; 0 through +/-7.9228162514264337593543950335 with 28 places to the right of the decimal; smallest nonzero number is +/-0.0000000000000000000000000001 (+/-1E-28) † |
| Double (double-precision floating-point) |
Double |
8 bytes |
-1.79769313486231570E+308 through -4.94065645841246544E-324 † for negative values; 4.94065645841246544E-324 through 1.79769313486231570E+308 † for positive values |
| Integer |
Int32 |
4 bytes |
-2,147,483,648 through 2,147,483,647 (signed) |
| Long (long integer) |
nt64 |
8 bytes |
-9,223,372,036,854,775,808 through 9,223,372,036,854,775,807 (9.2…E+18 †) (signed) |
| Object |
Object (class) |
4 bytes on 32-bit platform 8 bytes on 64-bit platform |
Any type can be stored in a variable of type Object |
| SByte |
SByte |
1 byte |
-128 through 127 (signed) |
| Short (short integer) |
Int16 |
2 bytes |
-32,768 through 32,767 (signed) |
| Single (single-precision floating-point) |
Single |
4 bytes |
-3.4028235E+38 through -1.401298E-45 † for negative values; 1.401298E-45 through 3.4028235E+38 † for positive values |
| String (variable-length) |
String (class) |
Depends on implementing platform |
0 to approximately 2 billion Unicode characters |
| UInteger |
UInt32 |
4 bytes |
0 through 4,294,967,295 (unsigned) |
| ULong |
UInt64 |
8 bytes |
0 through 18,446,744,073,709,551,615 (1.8…E+19 †) (unsigned) |
| User-Defined (structure) |
(inherits from ValueType) |
Depends on implementing platform |
Each member of the structure has a range determined by its data type and independent of the ranges of the other members |
| UShort |
UInt16 |
2 bytes |
0 through 65,535 (unsigned) |