How to convert an int type value to any float type value in Go or Golang?

Published August 17, 2022

To convert an int type value to any float type value in Go or Golang, you can either use the float32() or the float64() built-in functions depending upon the size you need to allocate for it.

For example, let's say we need to convert an int value of 3000 to a float type value.

Converting int to float32 type

Let's say we need to allocate only a 32-bit size for it, so we can use the float32() built-in function and pass the int value as an argument to the function like this,

package main

import "fmt"

func main() {
    // an `int` type value
    intNum := 3000

    // convert `int` to `float32`
    // using the `float32()` function
    float32Num := float32(intNum)


    // log to the console
    fmt.Println(float32Num) // 3000 and the type is `float32`
}

As you can see from the above code the int type value of 3000 is converted into a float32 type value.

Converting int to float64 type

If we need to allocate a 64-bit size, then we can use the float64() built-in function and pass the int value as an argument to the function like this,

package main

import "fmt"

func main() {
    // an `int` type value
    intNum := 3000

    // convert `int` to `float64`
    // using the `float64()` function
    float64Num := float64(intNum)

    // log to the console
    fmt.Println(float64Num) // 3000 and the type is `float64`
}

As you can see from the above code the int type value of 3000 is converted into a float64 type value.

Note: If you need to learn more about types in Go, see the blog on What are the basic types in Go or Golang?.

See the above codes live in The Go Playground.

That's all 😃!

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