---
title: fastestEncoding
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nsstring/fastestencoding
---

# fastestEncoding

The fastest encoding to which the receiver may be converted without loss of information.

## Declaration

```swift
var fastestEncoding: UInt { get }
```

## Discussion

Discussion “Fastest” applies to retrieval of characters from the string. This encoding may not be space efficient.

## See Also

### Related Documentation

- [getCharacters(_:range:)](foundation/nsstring/getcharacters(_:range:).md)

### Working with Encodings

- [availableStringEncodings](foundation/nsstring/availablestringencodings.md)
- [defaultCStringEncoding](foundation/nsstring/defaultcstringencoding.md)
- [stringEncoding(for:encodingOptions:convertedString:usedLossyConversion:)](foundation/nsstring/stringencoding(for:encodingoptions:convertedstring:usedlossyconversion:).md)
- [localizedName(of:)](foundation/nsstring/localizedname(of:).md)
- [canBeConverted(to:)](foundation/nsstring/canbeconverted(to:).md)
- [data(using:)](foundation/nsstring/data(using:).md)
- [data(using:allowLossyConversion:)](foundation/nsstring/data(using:allowlossyconversion:).md)
- [description](foundation/nsstring/description.md)
- [smallestEncoding](foundation/nsstring/smallestencoding.md)
- [StringEncodingDetectionOptionsKey](foundation/stringencodingdetectionoptionskey.md)
- [NSString Handling Exception Names](foundation/nsstring-handling-exception-names.md)