Decimal.ToInt64() Method in C# Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report This method is used to convert the value of the specified Decimal to the equivalent 64-bit signed integer. A user can also convert a Decimal value to a 64-bit integer by using the Explicit assignment operator. Syntax: public static long ToInt64 (decimal d); Here, the value is the decimal number which is to be converted. Return Value: It returns a 64-bit signed integer equivalent to the specified value. Exception: This method will give OverflowException if the specified value is less than MinValue or greater than MaxValue. Below programs illustrate the use of the above-discussed method: Example 1: csharp // C# program to demonstrate the // Decimal.ToInt64(Decimal) Method using System; class GFG { // Main Method public static void Main() { try { // Taking decimal variables Decimal dec1 = -926534668654775808.859m; Decimal dec2 = 4897498545.2364654M; // using Decimal.ToInt64(Decimal) Method // Here long means Int64 long val1 = Decimal.ToInt64(dec1); // using Decimal.ToInt64(Decimal) Method // Here long means Int64 long val2 = Decimal.ToInt64(dec2); // Printing the Int64 value Console.WriteLine("The Int64 value " + "is : {0}", val1); // Printing the Int64 value Console.WriteLine("The Int64 value " + "is : {0}", val2); } catch (OverflowException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } } Output: The Int64 value is : -926534668654775808 The Int64 value is : 4897498545 Example 2: For OverflowException csharp // C# program to demonstrate the // Decimal.ToInt64(Decimal) Method using System; class GFG { // Main Method public static void Main() { try { // Taking decimal variables Decimal dec1 = Decimal.MinValue; // Taking the maximum value // of Decimal Decimal dec2 = Decimal.MaxValue; // using Decimal.ToInt64(Decimal) Method // Here long means Int64 // It will give error long val1 = Decimal.ToInt64(dec1); // using Decimal.ToInt64(Decimal) Method // Here long means Int64 // It will give error long val2 = Decimal.ToInt64(dec2); // Printing the Int64 value Console.WriteLine("The Int64 value " + "is : {0}", val1); // Printing the Int64 value Console.WriteLine("The Int64 value " + "is : {0}", val2); } catch (OverflowException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } } Output: Exception Thrown: System.OverflowException Reference: https://learn.microsoft.com/en-us/dotnet/api/system.decimal.toint64?view=netframework-4.7.2 Comment More infoAdvertise with us Next Article Decimal.ToUInt64() Method in C# K Kirti_Mangal Follow Improve Article Tags : C# CSharp-method CSharp-Decimal-Struct Similar Reads Decimal.ToUInt64() Method in C# This method is used to convert the value of the specified Decimal to the equivalent 64-bit unsigned integer. A user can also convert a Decimal value to a 64-bit unsigned integer by using the Explicit assignment operator. Syntax: public static ulong ToUInt64 (decimal d); Here, the d is the decimal nu 2 min read Decimal.ToInt16() Method in C# This method is used to convert the value of the specified Decimal to the equivalent 16-bit signed integer. A user can also convert a Decimal value to a 16-bit integer by using the Explicit assignment operator. Syntax: public static short ToInt16 (decimal value); Here, the value is the decimal number 2 min read Decimal.ToUInt16() Method in C# This method is used to convert the value of the specified Decimal to the equivalent 16-bit unsigned integer. A user can also convert a Decimal value to a 16-bit unsigned integer by using the Explicit assignment operator. Syntax: public static ushort ToUInt16 (decimal value); Here, the value is the d 2 min read Decimal.ToInt32() Method in C# This method is used to convert the value of the specified Decimal to the equivalent 32-bit signed integer. A user can also convert a Decimal value to a 32-bit integer by using the Explicit assignment operator. Syntax: public static int ToInt32 (decimal value); Here, the value is the decimal number w 2 min read Decimal.ToUInt32() Method in C# This method is used to convert the value of the specified Decimal to the equivalent 32-bit unsigned integer. A user can also convert a Decimal value to a 32-bit unsigned integer by using the Explicit assignment operator. Syntax: public static uint ToUInt32 (decimal d); Here, the d is the decimal num 2 min read Decimal.ToSingle() Method in C# This method is used to convert the value of the specified Decimal to the equivalent single-precision floating-point number. This method can produce round-off errors as a single-precision floating-point number has few significant digits than a Decimal. Syntax: public static float ToSingle (decimal d) 1 min read Like