c# Standard numeric format strings

Format specifier	Name	Description	Examples
"C" or "c"	Currency	Result: A currency value. Supported by: All numeric types. Precision specifier: Number of decimal digits. Default precision specifier: Defined by NumberFormatInfo.CurrencyDecimalDigits. More information: The Currency ("C") Format Specifier.	123.456 ("C", en-US) -> \$123.46 123.456 ("C", fr-FR) -> 123,46 € 123.456 ("C", ja-JP) -> ¥123 -123.456 ("C3", en-US) -> (\$123.456) -123.456 ("C3", fr-FR) -> -123,456 € -123.456 ("C3", ja-JP) -> -¥123.456
"D" or "d"	Decimal	Result: Integer digits with optional negative sign. Supported by: Integral types only. Precision specifier: Minimum number of digits. Default precision specifier: Minimum number of digits required. More information: The Decimal("D") Format Specifier.	1234 ("D") -> 1234 -1234 ("D6") -> -001234
"E" or "e"	Exponential (scientific)	Result: Exponential notation. Supported by: All numeric types. Precision specifier: Number of decimal digits. Default precision specifier: 6. More information: The Exponential ("E") Format Specifier.	1052.0329112756 ("E", en-US) -> 1.052033E+003 1052.0329112756 ("e", fr-FR) -> 1,052033e+003 -1052.0329112756 ("e2", en-US) -> -1.05e+003 -1052.0329112756 ("E2", fr-FR) -> -1,05E+003
"F" or "f"	Fixed-point	Result: Integral and decimal digits with optional negative sign. Supported by: All numeric types. Precision specifier: Number of decimal digits. Default precision specifier: Defined by NumberFormatInfo.NumberDecimalDigits. More information: The Fixed-Point ("F") Format Specifier.	1234.567 ("F", en-US) -> 1234.57 1234.567 ("F", de-DE) -> 1234,57 1234 ("F1", en-US) -> 1234.0 1234 ("F1", de-DE) -> 1234,0 -1234.56 ("F4", en-US) -> -1234.5600 -1234.56 ("F4", de-DE) -> -1234,5600
"G" or "g"	General	Result: The more compact of either fixed-point or scientific notation. Supported by: All numeric types. Precision specifier: Number of significant digits. Default precision specifier: Depends on numeric type. More information: The General ("G") Format Specifier.	-123.456 ("G", en-US) -> -123.456 -123.456 ("G", sv-SE) -> -123,456 123.4546 ("G4", en-US) -> 123.5 123.4546 ("G4", sv-SE) -> 123,5 -1.234567890e-25 ("G", en-US) -> -1.23456789E-25 -1.234567890e-25 ("G", sv-SE) -> -1,23456789E-25
"N" or "n"	Number	Result: Integral and decimal digits, group separators, and a decimal separator with optional negative sign. Supported by: All numeric types. Precision specifier: Desired number of decimal places. Default precision specifier: Defined by NumberFormatInfo.NumberDecimalDigits. More information: The Numeric ("N") Format Specifier.	1234.567 ("N", en-US) -> 1,234.57 1234.567 ("N", ru-RU) -> 1 234,57 1234 ("N1", en-US) -> 1,234.0 1234 ("N1", ru-RU) -> 1 234,0 -1234.56 ("N3", en-US) -> -1,234.560 -1234.56 ("N3", ru-RU) -> -1 234,560
"P" or "p"	Percent	Result: Number multiplied by 100 and displayed with a percent symbol. Supported by: All numeric types. Precision specifier: Desired number of decimal places. Default precision specifier: Defined by NumberFormatInfo.PercentDecimalDigits. More information: The Percent ("P") Format Specifier.	1 ("P", en-US) -> 100.00 % 1 ("P", fr-FR) -> 100,00 % -0.39678 ("P1", en-US) -> -39.7 % -0.39678 ("P1", fr-FR) -> -39,7 %
"R" or "r"	Round-trip	Result: A string that can round-trip to an identical number. Supported by: Single, Double, and BigInteger. Note: Recommended for the BigInteger type only. For Double types, use "G17"; for Single types, use "G9". Precision specifier: Ignored. More information: The Round-trip ("R") Format Specifier.	123456789.12345678 ("R") -> 123456789.12345678 -1234567890.12345678 ("R") -> -1234567890.1234567
"X" or "x"	Hexadecimal	Result: A hexadecimal string. Supported by: Integral types only. Precision specifier: Number of digits in the result string. More information: The HexaDecimal ("X") Format Specifier.	255 ("X") -> FF -1 ("x") -> ff 255 ("x4") -> 00ff -1 ("X4") -> 00FF