---
title: HKQuantityTypeIdentifier
framework: healthkit
role: symbol
role_heading: Structure
path: healthkit/hkquantitytypeidentifier
---

# HKQuantityTypeIdentifier

The identifiers that create quantity type objects.

## Declaration

```swift
struct HKQuantityTypeIdentifier
```

## Overview

Overview To create an HKQuantityType instance, pass an HKQuantityTypeIdentifier value to the quantityType(forIdentifier:) method.

## Topics

### Activity

- [stepCount](healthkit/hkquantitytypeidentifier/stepcount.md)
- [distanceWalkingRunning](healthkit/hkquantitytypeidentifier/distancewalkingrunning.md)
- [runningGroundContactTime](healthkit/hkquantitytypeidentifier/runninggroundcontacttime.md)
- [runningPower](healthkit/hkquantitytypeidentifier/runningpower.md)
- [runningSpeed](healthkit/hkquantitytypeidentifier/runningspeed.md)
- [runningStrideLength](healthkit/hkquantitytypeidentifier/runningstridelength.md)
- [runningVerticalOscillation](healthkit/hkquantitytypeidentifier/runningverticaloscillation.md)
- [distanceCycling](healthkit/hkquantitytypeidentifier/distancecycling.md)
- [pushCount](healthkit/hkquantitytypeidentifier/pushcount.md)
- [distanceWheelchair](healthkit/hkquantitytypeidentifier/distancewheelchair.md)
- [swimmingStrokeCount](healthkit/hkquantitytypeidentifier/swimmingstrokecount.md)
- [distanceSwimming](healthkit/hkquantitytypeidentifier/distanceswimming.md)
- [distanceDownhillSnowSports](healthkit/hkquantitytypeidentifier/distancedownhillsnowsports.md)
- [basalEnergyBurned](healthkit/hkquantitytypeidentifier/basalenergyburned.md)
- [activeEnergyBurned](healthkit/hkquantitytypeidentifier/activeenergyburned.md)
- [flightsClimbed](healthkit/hkquantitytypeidentifier/flightsclimbed.md)
- [nikeFuel](healthkit/hkquantitytypeidentifier/nikefuel.md)
- [appleExerciseTime](healthkit/hkquantitytypeidentifier/appleexercisetime.md)
- [appleMoveTime](healthkit/hkquantitytypeidentifier/applemovetime.md)
- [appleStandTime](healthkit/hkquantitytypeidentifier/applestandtime.md)
- [vo2Max](healthkit/hkquantitytypeidentifier/vo2max.md)
- [crossCountrySkiingSpeed](healthkit/hkquantitytypeidentifier/crosscountryskiingspeed.md)
- [cyclingCadence](healthkit/hkquantitytypeidentifier/cyclingcadence.md)
- [cyclingFunctionalThresholdPower](healthkit/hkquantitytypeidentifier/cyclingfunctionalthresholdpower.md)
- [cyclingPower](healthkit/hkquantitytypeidentifier/cyclingpower.md)
- [cyclingSpeed](healthkit/hkquantitytypeidentifier/cyclingspeed.md)
- [distanceCrossCountrySkiing](healthkit/hkquantitytypeidentifier/distancecrosscountryskiing.md)
- [distancePaddleSports](healthkit/hkquantitytypeidentifier/distancepaddlesports.md)
- [distanceRowing](healthkit/hkquantitytypeidentifier/distancerowing.md)
- [distanceSkatingSports](healthkit/hkquantitytypeidentifier/distanceskatingsports.md)
- [estimatedWorkoutEffortScore](healthkit/hkquantitytypeidentifier/estimatedworkouteffortscore.md)
- [paddleSportsSpeed](healthkit/hkquantitytypeidentifier/paddlesportsspeed.md)
- [physicalEffort](healthkit/hkquantitytypeidentifier/physicaleffort.md)
- [rowingSpeed](healthkit/hkquantitytypeidentifier/rowingspeed.md)
- [workoutEffortScore](healthkit/hkquantitytypeidentifier/workouteffortscore.md)

### Body measurements

- [height](healthkit/hkquantitytypeidentifier/height.md)
- [bodyMass](healthkit/hkquantitytypeidentifier/bodymass.md)
- [bodyMassIndex](healthkit/hkquantitytypeidentifier/bodymassindex.md)
- [leanBodyMass](healthkit/hkquantitytypeidentifier/leanbodymass.md)
- [bodyFatPercentage](healthkit/hkquantitytypeidentifier/bodyfatpercentage.md)
- [waistCircumference](healthkit/hkquantitytypeidentifier/waistcircumference.md)
- [appleSleepingWristTemperature](healthkit/hkquantitytypeidentifier/applesleepingwristtemperature.md)

### Reproductive health

- [basalBodyTemperature](healthkit/hkquantitytypeidentifier/basalbodytemperature.md)

### Hearing

- [environmentalAudioExposure](healthkit/hkquantitytypeidentifier/environmentalaudioexposure.md)
- [environmentalSoundReduction](healthkit/hkquantitytypeidentifier/environmentalsoundreduction.md)
- [headphoneAudioExposure](healthkit/hkquantitytypeidentifier/headphoneaudioexposure.md)

### Vital signs

- [heartRate](healthkit/hkquantitytypeidentifier/heartrate.md)
- [restingHeartRate](healthkit/hkquantitytypeidentifier/restingheartrate.md)
- [walkingHeartRateAverage](healthkit/hkquantitytypeidentifier/walkingheartrateaverage.md)
- [heartRateVariabilitySDNN](healthkit/hkquantitytypeidentifier/heartratevariabilitysdnn.md)
- [heartRateRecoveryOneMinute](healthkit/hkquantitytypeidentifier/heartraterecoveryoneminute.md)
- [atrialFibrillationBurden](healthkit/hkquantitytypeidentifier/atrialfibrillationburden.md)
- [oxygenSaturation](healthkit/hkquantitytypeidentifier/oxygensaturation.md)
- [bodyTemperature](healthkit/hkquantitytypeidentifier/bodytemperature.md)
- [bloodPressureDiastolic](healthkit/hkquantitytypeidentifier/bloodpressurediastolic.md)
- [bloodPressureSystolic](healthkit/hkquantitytypeidentifier/bloodpressuresystolic.md)
- [respiratoryRate](healthkit/hkquantitytypeidentifier/respiratoryrate.md)

### Lab and test results

- [bloodGlucose](healthkit/hkquantitytypeidentifier/bloodglucose.md)
- [electrodermalActivity](healthkit/hkquantitytypeidentifier/electrodermalactivity.md)
- [forcedExpiratoryVolume1](healthkit/hkquantitytypeidentifier/forcedexpiratoryvolume1.md)
- [forcedVitalCapacity](healthkit/hkquantitytypeidentifier/forcedvitalcapacity.md)
- [inhalerUsage](healthkit/hkquantitytypeidentifier/inhalerusage.md)
- [insulinDelivery](healthkit/hkquantitytypeidentifier/insulindelivery.md)
- [numberOfTimesFallen](healthkit/hkquantitytypeidentifier/numberoftimesfallen.md)
- [peakExpiratoryFlowRate](healthkit/hkquantitytypeidentifier/peakexpiratoryflowrate.md)
- [peripheralPerfusionIndex](healthkit/hkquantitytypeidentifier/peripheralperfusionindex.md)

### Mindfulness and Sleep

- [appleSleepingWristTemperature](healthkit/hkquantitytypeidentifier/applesleepingwristtemperature.md)

### Nutrition

- [dietaryBiotin](healthkit/hkquantitytypeidentifier/dietarybiotin.md)
- [dietaryCaffeine](healthkit/hkquantitytypeidentifier/dietarycaffeine.md)
- [dietaryCalcium](healthkit/hkquantitytypeidentifier/dietarycalcium.md)
- [dietaryCarbohydrates](healthkit/hkquantitytypeidentifier/dietarycarbohydrates.md)
- [dietaryChloride](healthkit/hkquantitytypeidentifier/dietarychloride.md)
- [dietaryCholesterol](healthkit/hkquantitytypeidentifier/dietarycholesterol.md)
- [dietaryChromium](healthkit/hkquantitytypeidentifier/dietarychromium.md)
- [dietaryCopper](healthkit/hkquantitytypeidentifier/dietarycopper.md)
- [dietaryEnergyConsumed](healthkit/hkquantitytypeidentifier/dietaryenergyconsumed.md)
- [dietaryFatMonounsaturated](healthkit/hkquantitytypeidentifier/dietaryfatmonounsaturated.md)
- [dietaryFatPolyunsaturated](healthkit/hkquantitytypeidentifier/dietaryfatpolyunsaturated.md)
- [dietaryFatSaturated](healthkit/hkquantitytypeidentifier/dietaryfatsaturated.md)
- [dietaryFatTotal](healthkit/hkquantitytypeidentifier/dietaryfattotal.md)
- [dietaryFiber](healthkit/hkquantitytypeidentifier/dietaryfiber.md)
- [dietaryFolate](healthkit/hkquantitytypeidentifier/dietaryfolate.md)
- [dietaryIodine](healthkit/hkquantitytypeidentifier/dietaryiodine.md)
- [dietaryIron](healthkit/hkquantitytypeidentifier/dietaryiron.md)
- [dietaryMagnesium](healthkit/hkquantitytypeidentifier/dietarymagnesium.md)
- [dietaryManganese](healthkit/hkquantitytypeidentifier/dietarymanganese.md)
- [dietaryMolybdenum](healthkit/hkquantitytypeidentifier/dietarymolybdenum.md)
- [dietaryNiacin](healthkit/hkquantitytypeidentifier/dietaryniacin.md)
- [dietaryPantothenicAcid](healthkit/hkquantitytypeidentifier/dietarypantothenicacid.md)
- [dietaryPhosphorus](healthkit/hkquantitytypeidentifier/dietaryphosphorus.md)
- [dietaryPotassium](healthkit/hkquantitytypeidentifier/dietarypotassium.md)
- [dietaryProtein](healthkit/hkquantitytypeidentifier/dietaryprotein.md)
- [dietaryRiboflavin](healthkit/hkquantitytypeidentifier/dietaryriboflavin.md)
- [dietarySelenium](healthkit/hkquantitytypeidentifier/dietaryselenium.md)
- [dietarySodium](healthkit/hkquantitytypeidentifier/dietarysodium.md)
- [dietarySugar](healthkit/hkquantitytypeidentifier/dietarysugar.md)
- [dietaryThiamin](healthkit/hkquantitytypeidentifier/dietarythiamin.md)
- [dietaryVitaminA](healthkit/hkquantitytypeidentifier/dietaryvitamina.md)
- [dietaryVitaminB12](healthkit/hkquantitytypeidentifier/dietaryvitaminb12.md)
- [dietaryVitaminB6](healthkit/hkquantitytypeidentifier/dietaryvitaminb6.md)
- [dietaryVitaminC](healthkit/hkquantitytypeidentifier/dietaryvitaminc.md)
- [dietaryVitaminD](healthkit/hkquantitytypeidentifier/dietaryvitamind.md)
- [dietaryVitaminE](healthkit/hkquantitytypeidentifier/dietaryvitamine.md)
- [dietaryVitaminK](healthkit/hkquantitytypeidentifier/dietaryvitamink.md)
- [dietaryWater](healthkit/hkquantitytypeidentifier/dietarywater.md)
- [dietaryZinc](healthkit/hkquantitytypeidentifier/dietaryzinc.md)

### Alcohol consumption

- [bloodAlcoholContent](healthkit/hkquantitytypeidentifier/bloodalcoholcontent.md)
- [numberOfAlcoholicBeverages](healthkit/hkquantitytypeidentifier/numberofalcoholicbeverages.md)

### Mobility

- [appleWalkingSteadiness](healthkit/hkquantitytypeidentifier/applewalkingsteadiness.md)
- [sixMinuteWalkTestDistance](healthkit/hkquantitytypeidentifier/sixminutewalktestdistance.md)
- [walkingSpeed](healthkit/hkquantitytypeidentifier/walkingspeed.md)
- [walkingStepLength](healthkit/hkquantitytypeidentifier/walkingsteplength.md)
- [walkingAsymmetryPercentage](healthkit/hkquantitytypeidentifier/walkingasymmetrypercentage.md)
- [walkingDoubleSupportPercentage](healthkit/hkquantitytypeidentifier/walkingdoublesupportpercentage.md)
- [stairAscentSpeed](healthkit/hkquantitytypeidentifier/stairascentspeed.md)
- [stairDescentSpeed](healthkit/hkquantitytypeidentifier/stairdescentspeed.md)

### UV exposure

- [timeInDaylight](healthkit/hkquantitytypeidentifier/timeindaylight.md)
- [uvExposure](healthkit/hkquantitytypeidentifier/uvexposure.md)

### Diving

- [underwaterDepth](healthkit/hkquantitytypeidentifier/underwaterdepth.md)
- [waterTemperature](healthkit/hkquantitytypeidentifier/watertemperature.md)

### Initializers

- [init(rawValue:)](healthkit/hkquantitytypeidentifier/init(rawvalue:).md)

### Type Properties

- [appleSleepingBreathingDisturbances](healthkit/hkquantitytypeidentifier/applesleepingbreathingdisturbances.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Creating quantity types

- [quantityType(forIdentifier:)](healthkit/hkobjecttype/quantitytype(foridentifier:).md)