Data types in Rust are specified or identified as the data storage format that tells the compiler or interpreter how the programmer enters the data and what type of data they enter into the program. Data types are used to define a variable before use in a program. Data types determine the size of the variable, space it occupies in storage.

Data types are divided into following three categories:

• Primitive Data Types
• Derived Data Types
• User Defined Data Types

Integer Types

Integer Types

Type	Sign	Length(bit)	Value
i8	Signed	8	-128 to 128
u8	Unsigned	8	0 to 256
i16	Signed	16	-32.768 to 32.768
u16	Unsigned	16	0 to 65.535
i32	Signed	32	-2.147.483.648 to 2.147.483.648
u32	Unsigned	32	0 to 4.294.967.295
i64	Signed	64	-9,223.372.036.854.775.808 to 9,223.372.036.854.775.808
u64	Unsigned	64	0 to 18.446.744.073.709.551.615
i128	Signed	128	-170.141.183,460.469,231.731.687.303.715.884.105.728    to 170.141.183,460.469,231.731.687.303.715.884.105.728
u128	Unsigned	128	0 to 340.282.366.920.938.463.463.374.607.431.768.211.455
isize	Signed	arch	Depends on architecture (32/64-bit)
usize	Unsigned	arch	Depends on architecture (32/64-bit)

Floating-Point Types

Type	Value	Absolute minimum (non-zero)
f32	±1,175494351e-38 to ±3,402823466e+38	1,401298464e-45
f64	±2.2250738585072014e-308 to ±1.7976931348623157e+308	4.9406564584124654e-324

Boolean Type

Boolean type in Rust has two possible values: true and false.

Booleans are one byte in size.

The Boolean type in Rust is specified using bool.

Character Type

Rust’s char type is the language’s most primitive alphabetic type.

Tuple Type

Array Type