# Convert an int to a hex String in Python

In this Python tutorial, we will learn how to convert an int to a hex string.

## Convert int to a hex string using the hex() function.

The hex() method converts the given integer to a Hexadecimal string.

syntax:

```hex(value)
```

Where parameter value is an integer value and it returns a string containing the hexa decimal version of the given integer value.

Example:

Convert integer 12 to hex string.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
hex_value = hex(value)

print("Hex value: ",hex_value)
print("Type: ",type(hex_value))
```

Output:

```Original Value:  12
Hex value:  0xc
Type:  <class 'str'>
```

We can say that 12 is converted to hex string – 0xc by checking with the type() method. It returned str, which refers to the string class.

## Convert int to a hex string using format() in lowercase

The format() method converts the given value into a hex string.

Syntax:

```format(value, '#x')
format(value, 'x')
```

It takes two parameters and returns the hexadecimal string of given integer.

Parameters:

1. The value represents the integer value.
2. The ‘#x’ returns the hex string in lowercase with the prefix- 0x. If we specify it as ‘x’, then it won’t return the prefix- 0x.

Example:

Convert integer value 12 to hex string into lowercase using format() method with and without prefix.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
print("Hex value: ",format(value, '#x'))
# Get the type
print("Type: ",type(format(value, '#x')))

# Convert integer to hex
print("Hex value: ",format(value, 'x'))
# Get the type
print("Type: ",type(format(value, 'x')))
```

Output:

```Original Value:  12
Hex value:  0xc
Type:  <class 'str'>
Hex value:  c
Type:  <class 'str'>
```

You can see that the hex string is in lowercase.

## Convert int to a hex string using format() in uppercase

The format() and convert the given value into a hex string.

Syntax:

```format(value, '#X')
format(value, 'X')
```

It takes two parameters and returns the hexadecimal string of given integer.

Parameters:

1. The value represents the integer value
2. The ‘#X’ returns the hex string in the Upper case with prefix- 0X. If we specify it as ‘X’, then it won’t return the prefix- 0X.

Example:

Convert integer value 12 to hex string in uppercase using format() method with and without prefix.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
print("Hex value: ",format(value, '#X'))
# Get the type
print("Type: ",type(format(value, '#X')))

# Convert integer to hex
print("Hex value: ",format(value, 'X'))
# Get the type
print("Type: ",type(format(value, 'X')))
```

Output:

```Original Value:  12
Hex value:  0XC
Type:  <class 'str'>
Hex value:  C
Type:  <class 'str'>
```

You can see that the hex string is in uppercase.

## Convert int to a hex string using f-strings in lowercase

The f-string convert the given value into a hex string.

Syntax:

```f'{value:#x}'
f'{value:x}'
```

Where,
1. The value represents the integer value
2. The ‘#x’ returns the hex string in lowercase with the prefix- 0x. If we specify it as ‘x’, then it won’t return the prefix- 0x.

Example:

Convert integer value 12 to hex string using f-strings with and without prefix.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
strValue = f'{value:#x}'

print("Hex value: ", strValue)
# Get the type
print("Type: ", type(strValue) )

# Convert integer to hex
strValue = f'{value:x}'

print("Hex value: ", strValue)
# Get the type
print("Type: ", type(strValue) )
```

Output:

```Original Value:  12
Hex value:  0xc
Type:  <class 'str'>
Hex value:  c
Type:  <class 'str'>
```

You can see that the hex string is in lowercase.

## Convert int to a hex string using f-strings in uppercase

The f-string convert the given value into a hex string. here we will see how to convert hex string in upper case.

Syntax:

```f'{value:#X}'
f'{value:X}'
```

Where,

1. value represents the integer value
2. ‘#X’ returns the hex string in uppercase with prefix- 0X. If we specify it as ‘X’, then it won’t return the prefix- 0X.

Example:

Convert integer value -12 to hex string in uppercase using f-strings with and without prefixes.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
print("Hex value: ",f'{value:#X}')
# Get the type
print("Type: ",type(f'{value:#X}'))

# Convert integer to hex
print("Hex value: ",f'{value:X}')
# Get the type
print("Type: ",type(f'{value:X}'))
```

Output:

```Original Value:  12
Hex value:  0XC
Type:  <class 'str'>
Hex value:  C
Type:  <class 'str'>
```

You can see that the hex string is in uppercase.

## Convert int to a hex string using % operator in lowercase

The % operator will return the value by taking format specifier. If you want to convert an integer to a hex string, you need to specify the format specifier as x. It will get the hex string in lowercase.

Syntax:

```"%#x" % value
"%x" % value
```

Where
1. value represents the integer value
2. ‘#x’ returns the hex string in lowercase with the prefix- 0x. If we specify it as ‘x’, then it won’t return the prefix- 0x.

Example:

Convert integer value -12 to hex string using % operator with and without prefix in lowercase.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
print("Hex value: ","%#x" % value)
# Get the type
print("Type: ",type("%#x" % value))

# Convert integer to hex
print("Hex value: ","%x" % value)
# Get the type
print("Type: ", type("%x" % value))
```

Output:

```Original Value:  12
Hex value:  0xc
Type:  <class 'str'>
Hex value:  c
Type:  <class 'str'>
```

You can see that the hex string is in lowercase.

## Convert int to a hex string using % operator in uppercase

The % operator will return the value by taking format specifier. If you want to convert an integer to a hex string, you need to specify the format specifier as x. It will get the hex string in uppercase.

Syntax:

```"%#X" % value
"%X" % value
```

Where
1. value represents the integer value
2. ‘#X’ returns the hex string in uppercase with prefix- 0X. If we specify it as ‘X’, then it won’t return the prefix- 0X.

Example:

Convert integer value -12 to hex string using % operator with and without prefix in uppercase.

```# Consider an integer
value=12

print("Original Value: ",value)

# Convert integer to hex
print("Hex value: ","%#X" % value)
# Get the type
print("Type: ",type("%#X" % value))

# Convert integer to hex
print("Hex value: ","%X" % value)
# Get the type
print("Type: ",type("%X" % value))
```

Output:

```Original Value:  12
Hex value:  0XC
Type:  <class 'str'>
Hex value:  C
Type:  <class 'str'>
```

You can see that the hex string is in uppercase.

## Summary

In this article, we learned about seven different ways to convert int to hex string in python. The x is used to get the hex string in lowercase and X is used to return the hex string in upper case. Thanks.

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