Common Data Types
Data type Storage size Range
Boolean 2 bytes True or False
Integer 2 bytes -32,768 to 32,767
Long 4 bytes -2,147,483,648 to 2,147,483,647
Single 4 bytes -3.402823E38 to -1.401298E-45 for negative values; 1.401298E-45 to 3.402823E38 for positive values
Double 8 bytes -1.79769313486231E308 to -4.94065645841247E-324 for negative values; 4.94065645841247E-324 to 1.79769313486232E308 for positive values
Date 8 bytes January 1, 100 to December 31, 9999
Object 4 bytes Any Object reference
String 10 bytes 0 to approximately 2 billion
Variant numbers 16 bytes Any numeric value up to the range of a Double
Variant characters) 22 bytes Same range as for variable-length String
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