Double to string with max one digit after dot

Question

How do I format a Double to String:

1715 --> 1.7K
500 --> 0.5k

Answer 1

Read for example about Numeric Format String, then use with proper value:

double value = 1715.0;
string result = (value / 1000.0).ToString("F1", CultureInfo.InvariantCulture) + "K";

Answer 2

You can do it like this:

 Console.WriteLine("{0:0.0}K", 1715/1000d);

Here is the fiddle

Further reading

• The "0" Custom Specifier