[C#] Format DateTime as String Examples

Some examples and tips on C# DateTime formatting using string.Format() or .ToString() methods.

Standard DateTime format

Standard formats are typically used when you need a fast string representation of your DateTime object based on current culture.

DateTime date = DateTime.Now;
// Short date:
string.Format("{0:d}", date)   // 10/20/2018
// Long date:
string.Format("{0:D}", date)   // Saturday, October 20, 2018 
// Short time:
string.Format("{0:t}", date)   // 11:16 AM
// Long time:
string.Format("{0:T}", date)   // 11:16:28 AM
// Full date/time (short time):
string.Format("{0:f}", date)   // Saturday, October 20, 2018 11:16 AM
// Full date/time (long time):
string.Format("{0:F}", date)   // Saturday, October 20, 2018 11:16:28 AM
// General  date/time (long time):
string.Format("{0:g}", date)   // 10/20/2018 11:16 AM
// General  date/time (long time):
string.Format("{0:G}", date)   // 10/20/2018 11:16:28 AM
// Sortable date/time:
string.Format("{0:s}", date)   // 2018-10-20T11:16:28

Custom DateTime format

Custom formats are useful when you need more flexibility on the output string format.

DateTime date = DateTime.Now;
string.Format("{0:MM/dd/yyyy}", date)   // 10/20/2018
string.Format("{0:MMMM dd, yyyy}", date)// October 20, 2018
string.Format("{0:MMM yyyy}", date)     // Oct 2018
string.Format("{0:hh:mm tt}", date)     // 11:16 AM

// Year patterns:
string.Format("{0:yy yyy yyyy}", date)  // 18 2018 2018
// Month patterns:
string.Format("{0:MM MMM MMMM}", date)  // 10 Oct October
// Day patterns:
string.Format("{0:dd ddd dddd}", date)  // 20 Sat Saturday
// Hour
string.Format("{0:hh HH tt}", date)     // 11 11 AM
// Minute, second, second fraction 
string.Format("{0:mm ss ffff}", date)   // 16 28 4863

Format DateTime for a specific culture

When you format a DateTime with DateTime.ToString() you can also specify the culture to use.


using System.Globalization;
// ...
DateTime date = DateTime.Now;
// InvariantCulture 
CultureInfo invC = CultureInfo.InvariantCulture;
date.ToString("f", invC)        // Saturday, 20 October 2018 11:16 
date.ToString("d", invC)        // 10/20/2018 
date.ToString("t", invC)        // 11:16 
// German CultureInfo 
CultureInfo deC = new CultureInfo("de-De");
date.ToString("f", deC)        // Samstag, 20. Oktober 2018 11:16 
date.ToString("d", deC)        // 20.10.2018 
date.ToString("t", deC)        // 11:16 
// French CultureInfo 
CultureInfo frC = new CultureInfo("fr-FR");
date.ToString("f", frC)        // samedi 20 octobre 2018 11:16 
date.ToString("d", frC)        // 20/10/2018 
date.ToString("t", frC)        // 11:16 
// Spanish CultureInfo 
CultureInfo esC = new CultureInfo("es-ES");
date.ToString("f", esC)        // sábado, 20 de octubre de 2018 11:16 
date.ToString("d", esC)        // 20/10/2018 
date.ToString("t", esC)        // 11:16

Character escape and text

Any characters not used by the formatter is reported in the result string. If you need to enter text with reserved characters that must be inserted between two ' (single quote).

DateTime date = DateTime.Now;
// Escaped date text
string.Format("{0:'y:' yyyy' m:' M 'd:' d}", date)  // y: 2018 m: 10 d: 20 
// Force time format to use ':' as separator ()
string.Format("{0:HH':'mm}", date)                  // 11:16

TOOL: Test you format string

A simple tool for test your format string.