Best Health Calculators Apps

0+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated July 2026

Out of 0+ health calculators apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Health Calculators Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Health calculator: weight, BMIHealth calculator: weight, BMIFree4.6★ (47)YesNoAug 2026
2Nutrition Tracker: FoodnomsNutrition Tracker: FoodnomsFree4.7★ (7.5K)NoYesAug 2026
3Calculate by QxMDCalculate by QxMDFree4.8★ (5.1K)YesNoAug 2026
4DR.EPIC HEALTH CALCULATORDR.EPIC HEALTH CALCULATORFree5.0★ (2)YesNoMay 2026
5WithingsWithingsFree4.6★ (362K)NoYesAug 2026
6BMI Calculator‰BMI Calculator‰Free4.9★ (24K)YesNoAug 2026
7MDCalc Medical CalculatorMDCalc Medical CalculatorFree4.9★ (52K)NoNoAug 2026
8Peptides CalculatorPeptides CalculatorFree was $2.994.3★ (168)NoYesAug 2026

Top Picks for Health Calculators

Health calculator: weight, BMI#1

Health calculator: weight, BMI by Hoang Tue

Weight gain / loss, pregnancy
Editor's Choice
💪 Health & Fitness
4.6(47 ratings)
FreeAds
Health calculator: weight, BMI screenshot 1
Health calculator: weight, BMI screenshot 2
Health calculator: weight, BMI screenshot 3
Health calculator: weight, BMI screenshot 4

This app helps you manage your health by calculating key metrics like BMI, daily calorie needs, and target heart rate zones. It also assists with pregnancy planning and hydration goals based on your personal data.

Nutrition Tracker: Foodnoms#2

Nutrition Tracker: Foodnoms by Algebraic Labs, LLC

Calorie Counter & Protein Log
Strong Contender
💪 Health & Fitness
4.7😊(7.5K ratings)
FreeIn-App Purchases
Nutrition Tracker: Foodnoms screenshot 1
Nutrition Tracker: Foodnoms screenshot 2
Nutrition Tracker: Foodnoms screenshot 3
Nutrition Tracker: Foodnoms screenshot 4
Nutrition Tracker: Foodnoms screenshot 5
Nutrition Tracker: Foodnoms screenshot 6

Easily log your meals and track your progress towards custom nutrition goals. This app offers fast food logging, detailed insights into your eating habits, and seamless integration with Apple Health. Monitor calories, macros, and more to achieve your health and fitness objectives.

What We Love

  • 🚀 Easy to use
  • 🔒 Privacy-focused
  • 👍 Intuitive interface
  • 👍 Seamless Apple ecosystem integration

Room to Improve

  • 🐛 Limited food database, especially for non-US items
  • 🐛 Occasional syncing issues
  • 🐛 Inability to edit existing food entries
Calculate by QxMD#3

Calculate by QxMD by WebMD

Medical Calculator
Worth Considering
🏥 Medical
4.8😊(5.1K ratings)
FreeAds
Calculate by QxMD screenshot 1
Calculate by QxMD screenshot 2
Calculate by QxMD screenshot 3
Calculate by QxMD screenshot 4
Calculate by QxMD screenshot 5

This clinical calculator and decision support tool offers over 200 medical calculators and tools for diagnosis, treatment, and prognosis. It adapts to your practice and provides detailed references, integrating with PubMed and Read by QxMD.

What We Love

  • ⭐ Excellent app
  • 📋 Comprehensive set of calculators
  • 🔍 Helpful references and explanations
  • 🔧 Useful for daily practice

Room to Improve

  • 🐛 App freezes or crashes
  • 🔍 Some calculators not working
  • 🔑 Repeated login requests

More Health Calculators apps to explore

4
DR.EPIC HEALTH CALCULATOR
DR.EPIC HEALTH CALCULATOR
DR.EPIC HEALTH CALCULATOR
Pregnancy/BMI/Weight Loss Calc
Free

This app provides educational health calculations including BMI, calorie needs, body fat percentage, and pregnancy due dates. It uses established mathematical equations for estimations and is intended for informational and motivational purposes.

BMI CalculatorCalorie CalculatorBody Fat Calculator
💪 Health & Fitness
(2)
ad-supported
5
Withings
Withings
Withings
THE NEXUS OF YOUR HEALTH
Free

This app serves as a central hub for managing your health, consolidating data from various devices and apps. It provides insights, educational content, and tools to track progress towards goals like weight loss, activity, and sleep. Share your health data securely with your doctor for informed medical decisions.

Unified health data from devices and appsWeight and body composition monitoringActivity and sleep tracking
💪 Health & Fitness
(362K)
free with in-app purchases
6
BMI Calculator‰
BMI Calculator‰
BMI Calculator‰
Body Mass Index Calculator
Free

Easily calculate your Body Mass Index (BMI) with this straightforward application. It provides a quick way to understand your weight status based on your height and weight.

BMI calculationInput heightInput weight
💪 Health & Fitness
(24K)
ad-supported
7
MDCalc Medical Calculator
MDCalc Medical Calculator
MDCalc Medical Calculator
Clinical Decision Support
Free

This app provides over 900 evidence-based medical calculators, risk scores, and clinical tools for healthcare professionals. It offers offline functionality, expert insights, and CME tracking to support patient care at the bedside. Tools are developed and validated by board-certified physicians.

900+ evidence-based calculatorsOffline functionalityExpert insights and commentary
🏥 Medical
(52K)
free
8
Peptides Calculator
Peptides Calculator
Peptides Calculator
Reconstitution Calculator
Free
$2.99 | 100% OFF

This app helps users log, organize, and manage their peptide preparation process. It offers features for calculating reconstitution details, saving vial records, and accessing educational content. An optional subscription unlocks unlimited entries, enhanced tracking, and multi-device sync.

Log and calculate reconstitution detailsSave and organize vial recordsBrowse peptide reference library
💪 Health & Fitness
(168)
freemium
9
BMI Calculator – Weight Loss
BMI Calculator – Weight Loss
BMI Calculator – Weight Loss
Calculate your ideal weight
Free

Calculate and track your Body Mass Index (BMI) with this user-friendly app. It provides personalized health insights, ideal weight recommendations, and supports various units and classification systems. Monitor your weight journey and understand health risks.

Instant BMI calculation with animated gaugePersonalized health insightsIdeal weight recommendations
💪 Health & Fitness
(28K)
free with in-app purchases
10
BMI Calculator + Weight Loss
BMI Calculator + Weight Loss
BMI Calculator + Weight Loss
Lose weight. Improve your BMI.
Free

This app helps users achieve their weight and body goals through a comprehensive suite of tracking and analysis tools. It offers a BMI calculator, weight diary, and detailed body measurements to visualize progress and stay motivated on the journey to better health.

Professional BMI CalculatorSmart Weight TrackerBody Data Analytics
💪 Health & Fitness
(1.6K)
free with in-app purchases
11
FITTR: Health & Fitness App
FITTR: Health & Fitness App
FITTR: Health & Fitness App
Health Tests, Workouts & Diets
Free

This app helps you proactively manage your health through a science-backed ecosystem. It integrates wearables, smart tools, and lab tests to help you understand your body, diagnose potential issues, and implement personalized lifestyle interventions for long-term well-being.

Health and lifestyle tracking via wearablesCalorie, protein, and body fat calculatorsSmart scale with 50+ health metrics
💪 Health & Fitness
(2.4K)
free with in-app purchases
12
Health Calculator
Health Calculator
Health Calculator
34 Formulas and Calculators
$0.99
💪 Health & Fitness
(0)
13
Health Checkup Fitness Test
Health Checkup Fitness Test
Health Checkup Fitness Test
Fitness test - Fitness tracker
Free

This app helps you monitor your health with various calculators and tests. It offers tools for tracking blood sugar, blood pressure, BMI, and more, aiding in regular health checkups for adults and children. Analyze your data and gain insights into your well-being.

Blood sugar calculatorBlood pressure calculatorBMI and body fat calculator
💪 Health & Fitness
(5)
free
14
Calorie Deficit Calculator
Calorie Deficit Calculator
Calorie Deficit Calculator
Oatsy Macro Tracker Diet Coach
Free

This app helps you achieve your health and nutrition goals by tracking your food intake, water consumption, and exercise. It offers a comprehensive nutrition database, custom diet plans, and AI-powered food scanning to make logging easier.

Advanced food diary with large nutrition databaseCalorie and macro/micronutrient trackingCustomizable diet plans (Keto, Intermittent Fasting, etc.)
💪 Health & Fitness
(3.7K)
free with in-app purchases
15
MacrosFirst - Macro Tracker
MacrosFirst - Macro Tracker
MacrosFirst - Macro Tracker
Calorie Counter, Nutrition Log
Free

This app helps users track their food intake, calories, and macronutrients to achieve health and fitness goals. It offers features like custom goal setting, automatic serving size calculation, and quick food logging via barcode scanning or label analysis. Users can also monitor progress, share meals, and even convert alcohol calories into macro equivalents.

Custom macro goal settingAutomatic serving size calculationBarcode and label scanning for food logging
💪 Health & Fitness
(21K)
freemium
16
MacroFactor - Macro Tracker
MacroFactor - Macro Tracker
MacroFactor - Macro Tracker
Calorie Counter & Food Log
Free

This app uses a dynamic algorithm to adapt your calorie and macro targets based on your metabolism and progress. It offers tools for quick food logging, a verified database, and personalized coaching to help you achieve sustainable diet goals without stress or rigidity.

Dynamic metabolism adaptationPersonalized macro and calorie targetsVerified food database
💪 Health & Fitness
(21K)
free with in-app purchases
17
Mayo Clinic
Mayo Clinic
Mayo Clinic
Ranked #1 in the Nation
Free

Manage your health with tools for tracking information, scheduling appointments, and accessing medical records. Get health news, research-backed answers, and connect with care teams. Request appointments with experts and utilize online care options.

Track health informationSchedule and manage appointmentsAccess medical records and test results
🏥 Medical
(3.3K)
free
18
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
Body Mass Index & Ideal Weight
Free

Calculate your Body Mass Index (BMI) and ideal weight with this easy-to-use tool. Track your BMI to support weight loss efforts. Ideal for both men and women.

BMI calculationIdeal weight calculationWeight loss tracking support
💪 Health & Fitness
(2K)
ad-supported
19
Natural Cycles: Fertility App
Natural Cycles: Fertility App
Natural Cycles: Fertility App
Ovulation Tracker・FDA-cleared
Free

This app helps women track their hormonal health and fertility using body temperature data. It offers hormone-free contraception, pregnancy planning, and insights into various cycle stages. It adapts to individual cycles, even irregular ones, providing daily fertility status.

Hormone-free contraceptionOvulation tracking via temperaturePersonalized cycle adaptation
💪 Health & Fitness
(30K)
subscription
20
FunFit AI: Health Tracker
FunFit AI: Health Tracker
FunFit AI: Health Tracker
AI Scanner & Health Insights
Free

This AI-powered health companion offers personalized nutrition tracking, meal scanning, and workout planning. It provides detailed health and hormone scores for meals, and features gamified challenges to build healthier habits. A subscription is required to access all features, with a 7-day free trial available.

AI food scanner with nutrition dataPersonalized meal and workout plansSmart AI chat for health questions
💪 Health & Fitness
(108)
subscription

FAQ about Health Calculators

What are the best health calculators apps for iPhone?
Health calculator: weight, BMI tops our health calculators apps ranking as of July 2026, with a 4.6-star average from 47 App Store ratings, and it's free to download.
Yes — 19 of the top health calculators apps we rank are free to download, including Health calculator: weight, BMI and Nutrition Tracker: Foodnoms.
Health calculator: weight, BMI shows ads and has no in-app purchases, according to its App Store listing as of July 2026.
Health calculator can measure your BMI, daily calorie requirements for weight gain or loss, target heart rate training zones, blood volume, daily water intake, ideal weight, pregnancy due date, ovulation period, and blood donation eligibility.
The app uses your personal data, including height, weight, age, and gender, to provide accurate and personalized health calculations.