What Converts to Long Data Type?


Scott Campbell

When working with data in programming, it is important to understand the different data types and how they behave. One commonly used data type is the long data type. In this article, we will explore what converts to a long data type and how to use it effectively in your code.

What is a Long Data Type?

A long data type is a 64-bit signed integer in most programming languages. It can hold larger values than other integer types, such as int or short. The range of values that a long can hold depends on the specific programming language you are using.

Converting to a Long Data Type

There are several ways to convert other data types to a long:

  • Implicit Conversion: In some cases, the programming language will automatically convert certain data types to a long without any explicit conversion needed. This can happen when assigning a value within the range of a long to a variable of that type.
  • Explicit Conversion: If you have a value of another data type that you want to convert to a long, you can use an explicit conversion method provided by the programming language. This ensures that the conversion is intentional and avoids any potential loss of precision or truncation.

Examples of Conversions:

Let’s take a look at some examples of converting different data types to a long:

  • Converting an int:
        int myInt = 100;
        long myLong = (long)myInt;
  • Converting a double:
        double myDouble = 3.14;
        long myLong = (long)myDouble;
  • Converting a string:
        String myString = "12345";
        long myLong = Long.parseLong(myString);

Using the Long Data Type

Once you have converted a value to a long data type, you can perform various operations on it. These include mathematical calculations, comparisons, and more. It is important to note that when performing calculations involving a long and another data type, the result will be of the larger data type.


Let’s see an example of using the long data type in a simple mathematical calculation:

long number1 = 1000L;
int number2 = 500;
long result = number1 + number2; // The result will be a long

In this example, both number1 and number2 are added together. Since number1 is a long and number2 is an int, the result will be promoted to a long as well.


The long data type is useful when working with large integer values that exceed the range of other integer types. Understanding how to convert other data types to a long and how to use it effectively in your code will help you manipulate and store large numbers accurately.

Remember to consider any potential loss of precision or truncation when converting from other data types to a long. Use explicit conversion methods when necessary to ensure accurate results.

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