---
title: smallCalorie()
framework: healthkit
role: symbol
role_heading: Type Method
path: healthkit/hkunit/smallcalorie()
---

# smallCalorie()

Returns a HealthKit unit for measuring energy in small calories (cal).

## Declaration

```swift
class func smallCalorie() -> Self
```

## Discussion

Discussion This unit represents the gram calorie, or the amount of energy needed to raise 1 gram of water by 1 degree Celsius (1 cal = 4.1840 J). This unit is occasionally used in chemistry and other sciences, but it should not be confused with the kilocalorie, or large calorie, which is  used for measuring food energy in many regions.

## See Also

### Constructing energy units

- [joule()](healthkit/hkunit/joule().md)
- [jouleUnit(with:)](healthkit/hkunit/jouleunit(with:).md)
- [kilocalorie()](healthkit/hkunit/kilocalorie().md)
- [largeCalorie()](healthkit/hkunit/largecalorie().md)
- [calorie()](healthkit/hkunit/calorie().md)