---
title: dateOfBirth
framework: healthkit
role: symbol
role_heading: Type Property
path: healthkit/hkcharacteristictypeidentifier/dateofbirth
---

# dateOfBirth

A characteristic type identifier for the user’s date of birth.

## Declaration

```swift
static let dateOfBirth: HKCharacteristicTypeIdentifier
```

## See Also

### Related Documentation

- [HKCharacteristicType](healthkit/hkcharacteristictype.md)
- [HKCharacteristicTypeIdentifier](healthkit/hkcharacteristictypeidentifier.md)

### Characteristic identifiers

- [activityMoveMode](healthkit/hkcharacteristictypeidentifier/activitymovemode.md)
- [biologicalSex](healthkit/hkcharacteristictypeidentifier/biologicalsex.md)
- [bloodType](healthkit/hkcharacteristictypeidentifier/bloodtype.md)
- [fitzpatrickSkinType](healthkit/hkcharacteristictypeidentifier/fitzpatrickskintype.md)
- [wheelchairUse](healthkit/hkcharacteristictypeidentifier/wheelchairuse.md)