All 178 data types
Every Apple Health type, grouped the way Apple Health groups them.
Activity28
- Active Energy BurnedkcalMeasures the energy expended through physical activity and movement above resting metabolic rate.
- Apple Exercise TimeminMeasures the amount of time the user spent exercising at or above a brisk walk intensity.
- Apple Move TimeminFull active movement minutes used by minute-based Move rings for younger Apple Watch users.
- Apple Stand TimeminMeasures the amount of time the user has spent standing throughout the day.
- Basal Energy BurnedkcalMeasures the resting energy expenditure (calories burned at rest) to maintain basic physiological functions.
- Cycling Cadencecount/minPedal rotation rate in Apple Health, measured in revolutions per minute.
- Cycling Functional Threshold PowerWAn estimate of the maximum average cycling power sustainable for 60 minutes.
- Cycling PowerWCycling power in watts, recorded separately from speed, heart rate and FTP estimates.
- Cycling Speedm/sCycling travel speed in Apple Health, with distinctions between samples and empty summary buckets.
- Cycling DistancemCycling distance in Apple Health: cumulative intervals, source-aware totals and real recording examples.
- Downhill Snow Sports DistancemDistance recorded during downhill skiing or snowboarding, with run boundaries, source differences and lift context.
- Swimming DistancemUnderstand swimming distance in Apple Health, pool length, interval recording and an example swim.
- Walking + Running DistancemMeasures the distance the user has moved by walking or running.
- Wheelchair DistancemMeasures the distance the user has moved using a wheelchair.
- Flights ClimbedcountCounts recorded stair flights climbed during an interval.
- Nike FuelcountNikeFuel activity points in Apple Health, with cumulative totals, historical records and source limitations.
- Physical Effortkcal/(kg*hr)Estimated task metabolic intensity in METs, recorded as a discrete quantity rather than a perceived effort score.
- Wheelchair Push CountcountMeasures the number of wheelchair pushes performed by the user for mobility and exercise.
- Running Ground Contact TimemsUnderstand Apple Watch ground contact time, example millisecond ranges, recording intervals and pace context.
- Running PowerWUnderstand Apple Watch running power in watts, example ranges, workout trends and the relationship with pace and heart rate.
- Running Speedm/sUnderstand Apple Health running speed, convert metres per second to pace and interpret real workout recording intervals.
- Running Stride LengthmUnderstand Apple Watch running stride length per single step, with example metre ranges and speed context.
- Running Vertical OscillationcmHow much your body moves up and down while running, with real Apple Health examples of ranges, recording intervals and pace context.
- Step CountcountUnderstand Apple Health step counts, overlapping sources, daily totals and why workout records have a different cadence.
- Swimming Stroke CountcountRead swimming stroke counts in Apple Health, interval cadence, distance pairing and limits of efficiency comparisons.
- Underwater DepthmUnderwater depth in Apple Health, with units, session boundaries, sampling gaps and device limits.
- VO2 MaxmL/kg/minMaximum oxygen uptake during exercise, a key indicator of cardiorespiratory fitness.
- Water TemperaturedegCWater temperature in Apple Health, with Celsius/Fahrenheit units, session coverage and sampling nuances.
Activity and Heart10
- Apple Stand HourCategoryRecords whether the user stood and moved for at least one minute during a given hour.
- Apple Walking Steadiness EventCategoryApple Health Walking Steadiness notifications: initial and repeat Low or Very Low events, recording cadence and differences from fall detection.
- Audio Exposure EventCategoryLegacy category for a loud-environment notification, superseded by Environmental Audio Exposure Event.
- Headphone Audio Exposure EventCategoryCategory recording a seven-day headphone exposure notification.
- High Heart Rate EventCategoryRecords Apple Watch notifications for heart rate above a chosen threshold during apparent inactivity.
- Irregular Heart Rhythm EventCategoryRecords Apple Watch notifications for an irregular pulse pattern that may suggest atrial fibrillation.
- Low Cardio Fitness EventCategoryRecords notifications when estimated VO2 max consistently falls in the Low cardio-fitness classification.
- Low Heart Rate EventCategoryRecords Apple Watch notifications for heart rate below a chosen threshold during apparent inactivity.
- Mindful SessionCategoryApple Health mindful sessions: recorded duration, app sources, overlapping entries and careful comparisons with heart rate and HRV.
- Sleep AnalysisCategoryUnderstand Apple Health sleep stages, interval timing, missing nights and how to calculate time asleep without double-counting.
Body Measurements7
- Sleeping Wrist TemperaturedegCAbsolute wrist skin temperature recorded overnight by Apple Watch; Apple Health displays changes relative to a personal baseline.
- Body Fat Percentage%The proportion of total body mass composed of adipose tissue, expressed as a percentage.
- Body Mass (Weight)kgThe user's total body weight, typically measured using a scale.
- Body Mass IndexcountA calculated ratio of weight to height used to classify weight status and assess health risks.
- HeightmA measurement of the user's standing height, a fundamental anthropometric parameter used for health assessment, growth monitoring, and clinical calculations.
- Lean Body MasskgThe total body mass minus all fat tissue, including muscle, bone, organs, and water.
- Waist CircumferencecmApple Health waist circumference: consistent measurement technique, length units, recording frequency and waist-to-height interpretation.
Characteristics6
- Activity Move ModeCharacteristicThe current setting that determines whether the Move ring measures active energy or Apple Move Time.
- Biological SexCharacteristicA user-controlled Health profile characteristic with female, male, other and unavailable states.
- Blood TypeCharacteristicThe ABO/Rh blood-group label entered in the user’s Health profile, rather than a verified laboratory result.
- Date of BirthCharacteristicThe Gregorian calendar birth date entered in the user’s Health profile, read as date components.
- Fitzpatrick Skin TypeCharacteristicA Health profile classification based on the skin’s tendency to burn and tan with sun exposure.
- Wheelchair UseCharacteristicA current Health profile setting indicating wheelchair use, with a separate unavailable state.
Correlations2
Hearing and Environment4
- Environmental Audio ExposuredBASPLEquivalent sound-level intervals describing surrounding noise in A-weighted decibels.
- Environmental Sound ReductiondBASPLEstimated attenuation of environmental sound while wearing supported headphones.
- Headphone Audio ExposuredBASPLEquivalent sound-level intervals describing headphone playback exposure.
- Time in DaylightminCumulative minutes of estimated outdoor daylight recorded by Apple Watch.
Lab and Test Results9
- Blood Alcohol Content%Read blood alcohol content in Apple Health with the right percent conversion, source method and sampling context.
- Electrodermal ActivitymcSUnderstand skin conductance units, source-dependent recording and the limits of interpreting electrodermal activity as stress.
- Forced Expiratory Volume (FEV1)LAir volume exhaled in the first second of a forced breathing test.
- Forced Vital CapacityLTotal air volume exhaled during a forced breathing test after a full inhalation.
- Inhaler UsagecountRecorded number of inhaler puffs; medication identity and technique need separate context.
- Insulin DeliveryIURead insulin delivery amounts in IU, separate basal and bolus metadata, and avoid duplicate or incomplete totals.
- Number of Times FallencountUnderstand saved fall counts, Apple Watch detection coverage, recording delays and the difference between missing records and zero falls.
- Peak Expiratory Flow RateL/minMaximum airflow during a forceful exhalation, recorded as a volume-per-time rate.
- UV ExposurecountUV index records in Apple Health, explaining sample duration, exposure intensity and differences from daylight time.
Mobility8
- Apple Walking Steadiness%A weekly iPhone estimate of walking quality and mobility-related fall risk.
- Six-Minute Walk Test DistancemA distance from a six-minute walk test or an Apple Watch estimate of expected test performance.
- Stair Ascent Speedm/sAverage speed during a recorded stair-ascent interval in Apple Health.
- Stair Descent Speedm/sAverage speed during a recorded stair-descent interval in Apple Health.
- Walking Asymmetry Percentage%Walking Asymmetry estimates the proportion of steps with different movement speeds between feet.
- Walking Double Support Percentage%Walking Double Support measures the fraction of a walking interval spent with both feet on the ground.
- Walking Speedm/sWalking Speed is the average speed estimated during a recorded interval of steady walking on flat ground.
- Walking Step LengthmWalking Step Length estimates the distance between the front and back feet during steady walking on flat ground.
Nutrition40
- Dietary Biotin (Vitamin B7)mcgUnderstand Apple Health biotin (B7) intake logs, mcg units, source coverage and daily totals.
- Dietary CaffeinemgTotal caffeine consumed from beverages, food, and supplements, measured in milligrams.
- Dietary CalciummgCalcium intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary CarbohydratesgTotal carbohydrate intake including sugars, starches, and fiber
- Dietary ChloridemgChloride intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary CholesterolmgLogged cholesterol intake, its units and daily coverage; distinct from blood cholesterol and LDL.
- Dietary ChromiummcgRecorded chromium intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary CoppermcgRecorded copper intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary Energy ConsumedkcalTotal caloric energy intake from food and beverages
- Monounsaturated FatgUnderstand monounsaturated fat grams, incomplete subtype logs and comparisons with total fat.
- Polyunsaturated FatgRead polyunsaturated fat logs and understand why PUFA totals cannot resolve omega-3, omega-6, EPA or DHA.
- Saturated FatgRead saturated-fat intake records, source coverage and the difference between grams and percent of energy.
- Dietary Fat (Total)gTotal fat intake from all dietary sources
- Dietary FibergUnderstand fiber grams, partial food logs and the difference between total fiber and carbohydrate detail.
- Dietary Folate (Vitamin B9)mcgUnderstand Apple Health folate (B9) intake logs, mcg units, source coverage and daily totals.
- Dietary IodinemcgRecorded iodine intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary IronmgIron intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary MagnesiummgMagnesium intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary ManganesemgRecorded manganese intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary MolybdenummcgRecorded molybdenum intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary Niacin (Vitamin B3)mgUnderstand Apple Health niacin (B3) intake logs, mg units, source coverage and daily totals.
- Dietary Pantothenic Acid (Vitamin B5)mgUnderstand Apple Health pantothenic acid (B5) intake logs, mg units, source coverage and daily totals.
- Dietary PhosphorusmgPhosphorus intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary PotassiummgPotassium intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary ProteingTotal protein intake from food and supplements
- Dietary Riboflavin (Vitamin B2)mgUnderstand Apple Health riboflavin (B2) intake logs, mg units, source coverage and daily totals.
- Dietary SeleniummcgRecorded selenium intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Dietary SodiummgSodium intake logged in Apple Health, with units, daily coverage and interpretation guidance.
- Dietary SugargRead sugar logs without confusing total sugar with added sugar, free sugar or blood glucose.
- Dietary Thiamin (Vitamin B1)mgUnderstand Apple Health thiamin (B1) intake logs, mg units, source coverage and daily totals.
- Dietary Vitamin AmcgUnderstand Apple Health vitamin A intake, micrograms versus RAE, food and supplement forms, and the limits of incomplete logs.
- Dietary Vitamin B12mcgUnderstand Apple Health vitamin B12 intake logs, mcg units, source coverage and daily totals.
- Dietary Vitamin B6mgUnderstand Apple Health vitamin B6 intake logs, mg units, source coverage and daily totals.
- Dietary Vitamin CmgRead Apple Health vitamin C intake in milligrams, compare logged portions, and distinguish dietary records from blood levels or iron absorption.
- Dietary Vitamin DmcgInterpret Apple Health dietary vitamin D, micrograms and IU, D2 and D3 labels, and why daylight or intake cannot determine blood vitamin D.
- Dietary Vitamin EmgUnderstand Apple Health vitamin E intake, alpha-tocopherol and IU label differences, supplement logging, and why intake is not an oxidative-stress reading.
- Dietary Vitamin KmcgUnderstand Apple Health vitamin K intake, K1 and K2 form limits, food logging, and why dietary records cannot predict INR or clotting function.
- Dietary WatermLRecorded water intake from contributing apps or manual entries, stored in milliliters.
- Dietary ZincmgRecorded zinc intake from food and supplement logs, with mass units, source coverage and interpretation limits.
- Alcoholic BeveragescountRecorded standard-drink equivalents in Apple Health, with source-dependent serving normalization and logging coverage.
Other2
Reproductive Health14
- Cervical Mucus QualityCategoryUnderstand Apple Health cervical mucus categories, observation gaps and their limits for cycle interpretation.
- ContraceptiveCategoryUnderstand contraceptive method codes, start and end dates, and what Apple Health records cannot show about adherence or effectiveness.
- Infrequent Menstrual CyclesCategoryUnderstand infrequent periods in Apple Health: verified cycle-history assessments, recording intervals and interpretation limits.
- Intermenstrual BleedingCategoryRead Apple Health spotting records, distinguish them from menstrual flow and persistent-spotting notifications, and understand logging gaps.
- Irregular Menstrual CyclesCategoryUnderstand irregular cycles in Apple Health: verified cycle-history assessments, recording intervals and interpretation limits.
- LactationCategoryUnderstand lactation records in Apple Health, factor start and end dates, source-specific session logging, and the limits of duration data.
- Menstrual FlowCategoryUnderstand Apple Health menstrual flow values, period intervals and cycle-start markers without confusing missing days with no bleeding.
- Ovulation Test ResultCategoryUnderstand Apple Health LH and estrogen surge results, recorded testing cadence and limits of ovulation inference.
- Persistent Intermenstrual BleedingCategoryUnderstand persistent spotting in Apple Health: verified cycle-history assessments, recording intervals and interpretation limits.
- PregnancyCategoryUnderstand pregnancy intervals in Apple Health, source revisions and the limits of gestational dating from category records.
- Pregnancy Test ResultCategoryUnderstand Apple Health pregnancy-test categories, repeat-test timing and why results are not hCG measurements.
- Progesterone Test ResultCategoryUnderstand qualitative home progesterone test results in Apple Health, PDG versus serum measurements, and the limits of result timing.
- Prolonged Menstrual PeriodsCategoryUnderstand prolonged periods in Apple Health: verified cycle-history assessments, recording intervals and interpretation limits.
- Sexual ActivityCategoryUnderstand Apple Health sexual-activity entries, optional protection metadata and the difference between unknown and false.
Symptoms33
- Abdominal CrampsCategoryUnderstand abdominal cramps in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- AcneCategoryAcne in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- Appetite ChangesCategoryAppetite Changes in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- Bladder IncontinenceCategoryBladder Incontinence in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- BloatingCategoryUnderstand bloating in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- Chest Tightness or PainCategoryRead Apple Health chest tightness or pain reports, severity labels, recording intervals and limits of heart-data comparisons.
- ChillsCategoryChills in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- ConstipationCategoryUnderstand constipation in Apple Health: severity labels, useful symptom history and recording limitations.
- CoughingCategoryCoughing in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- DiarrheaCategoryUnderstand diarrhea in Apple Health: severity labels, useful symptom history and recording limitations.
- DizzinessCategoryUnderstand dizziness reports in Apple Health, subjective severity, missing entries and the difference between symptoms and measurements.
- Dry SkinCategoryDry Skin in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- FatigueCategoryUnderstand fatigue in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- FeverCategoryFever in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- Generalized Body AcheCategoryUnderstand generalized body ache in Apple Health: severity labels, useful symptom history and recording limitations.
- Hair LossCategoryHair Loss in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- HeadacheCategoryUnderstand headache in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- HeartburnCategoryUnderstand heartburn in Apple Health: severity labels, useful symptom history and recording limitations.
- Hot FlashesCategoryUnderstand hot flashes in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- Lower Back PainCategoryUnderstand lower back pain in Apple Health: severity labels, useful symptom history and recording limitations.
- Mood ChangesCategoryUnderstand mood changes in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- NauseaCategoryUnderstand nausea in Apple Health: severity labels, useful symptom history and recording limitations.
- Night SweatsCategoryNight Sweats in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- Pelvic PainCategoryPelvic Pain in Apple Health: saved category values, useful reporting context and limits of symptom histories.
- Rapid, Pounding, or Fluttering HeartbeatCategoryInterpret rapid, pounding or fluttering heartbeat reports in Apple Health and distinguish symptom severity from pulse readings and rhythm alerts.
- Runny NoseCategoryRunny Nose in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- Shortness of BreathCategoryRead shortness-of-breath reports in Apple Health, interpret subjective severity and separate breathlessness from respiratory and oxygen measurements.
- Sinus CongestionCategorySinus Congestion in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- Skipped HeartbeatCategoryUnderstand skipped-heartbeat symptom reports in Apple Health, severity labels, overlapping entries and limits of rhythm interpretation.
- Sleep ChangesCategoryUnderstand sleep changes in Apple Health: category labels, logging cadence, source intervals and limits of contextual comparisons.
- Sore ThroatCategorySore Throat in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
- VomitingCategoryUnderstand vomiting in Apple Health: severity labels, useful symptom history and recording limitations.
- WheezingCategoryWheezing in Apple Health: understand severity labels, logging intervals and the difference between reported symptoms and measurements.
Vital Signs15
- Atrial Fibrillation Burden%An estimate of the percentage of time a person's heart shows signs of atrial fibrillation over a defined monitoring period.
- Basal Body TemperaturedegCBasal body temperature in Apple Health, with waking measurements, cycle context and differences from wrist temperature.
- Blood Glucosemg/dLThe concentration of glucose in the blood, a key indicator for diabetes management and metabolic health.
- Blood Pressure (Diastolic)mmHgThe minimum arterial pressure between heartbeats when the heart relaxes, representing the lower number in a blood pressure reading.
- Blood Pressure (Systolic)mmHgThe maximum arterial pressure during heart contraction, representing the upper number in a blood pressure reading.
- Body TemperaturedegCAn absolute temperature reading whose interpretation depends on measurement site, method and source.
- Heart Ratecount/minHeart rate in beats per minute: understand Apple Health readings, changing recording cadence, workout and sleep context, and common interpretation pitfalls.
- Heart Rate Recovery (1 Minute)count/minHeart-rate reduction after exercise, interpreted with the test method, workout conditions and recovery timing.
- Heart Rate Variability (RMSSD)msBeat-to-beat heart-rate variability in milliseconds, with source and recording-window context for Apple Health Recovery HRV.
- Heart Rate Variability (SDNN)msSDNN measures variation between normal heartbeat intervals in milliseconds. Apple Watch stores short, discrete estimates; compare source, recording duration and context before interpreting a trend.
- Blood Oxygen Saturation (SpO2)%The percentage of hemoglobin in the blood that is saturated with oxygen.
- Peripheral Perfusion Index%Peripheral perfusion index in Apple Health, with percentage encoding, sensor-site context and interpretation limits.
- Respiratory Ratecount/minThe number of breaths taken per minute, typically measured during sleep.
- Resting Heart Ratecount/minMeasures the heart rate while the user is at rest and relaxed, typically the lowest heart rate during waking hours.
- Walking Heart Rate Averagecount/minMeasures the user's average heart rate while walking, providing insight into cardiovascular fitness during light activity.