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Calculators

The Calculators section of the health dashboard in the Famalth ONE App provides a wide range of health and lifestyle calculators (40+ tools) to help you better understand your body, nutrition, fitness, and wellness.
These calculators simplify complex health metrics into clear, actionable insights.

Overview​

With Calculators, you can:

  • Calculate BMI, BMR, Body Fat %, and Lean Body Mass.
  • Estimate ideal weight, calorie needs, and macronutrient split.
  • Track hydration, carbs, protein, and fat intake.
  • Monitor fitness progress with tools like One-Rep Max, Pace, Calories Burned.
  • Explore women’s health calculators like Period, Ovulation, Conception, Pregnancy, Due Date.
  • Access specialized calculators under Skin & Hair, Water/Hardness, Chemistry/Other.

How to Use Calculators​

  1. Open the Famalth ONE App.
  2. Go to the Health Dashboard → Calculators card.
  3. Tap View All to explore all available calculators.
  4. Choose a calculator category:
    • Fitness (BMI, BMR, Strength, Calories Burned, etc.)
    • Nutrition (Macros, Protein, Hydration, Carbs, etc.)
    • Women’s Health (Cycle, Ovulation, Pregnancy, etc.)
    • Skin & Hair, Water, Chemistry/Other for extended tools.
  5. Enter the required values (e.g., height, weight, age, activity level).
  6. Tap Calculate to view results.

Calculator Categories​

Fitness​

  • BMI (Body Mass Index)
  • BMR (Basal Metabolic Rate)
  • Body Fat % (Adiposity Estimator)
  • Army Body Fat (Circumference Method)
  • Lean Body Mass (LBM)
  • Ideal Weight (Devine / Hamwi formulas)
  • Healthy Weight (Range by Height)
  • One-Rep Max (Strength Estimate)
  • Pace (Run Time & Splits)
  • Calories Burned (By Activity)

Nutrition​

  • Calorie (Daily Target)
  • TDEE (Total Daily Energy Expenditure)
  • Macro Split (Carbs, Protein, Fat)
  • Protein (Daily Grams)
  • Hydration (Daily Water Intake)
  • Carbohydrate (Daily Grams)
  • Fat Intake (Daily Grams)

Women’s Health​

  • Period (Cycle Tracker)
  • Ovulation (Fertility Window)
  • Conception (Likely Date)
  • Pregnancy (EDD & Milestones)
  • Pregnancy Conception (Back-Calculation)
  • Due Date (EDD from LMP)
  • Pregnancy Weight Gain (Recommended Gain)

Skin & Hair​

  • Fitzpatrick Skin Type (Phototype Scale)

Water / Hardness​

  • Water-related calculations (daily use & hardness checks).

Chemistry / Other​

  • BAC (Blood Alcohol Content)
  • All-In-One (Multi-tool Suite)
  • Other specialized tools.

Benefits​

  • Helps you understand health metrics instantly.
  • Provides personalized insights for fitness, diet, and lifestyle.
  • Supports daily decision-making (e.g., hydration needs, calorie intake).
  • Assists in tracking long-term goals like weight, strength, and pregnancy milestones.

Best Practices​

  • Update your height, weight, and age regularly for accurate results.
  • Use calculators together with other health trackers (steps, sleep, food).
  • Check nutrition and fitness calculators daily for balanced health.
  • Use women’s health calculators for cycle and pregnancy planning.

Common Questions​

Do I need internet to use calculators?

No. Most calculators work offline.

Are results medically accurate?

Results are based on scientific formulas but should be treated as guidelines only, not medical advice.

How many calculators are available?

The app offers 40+ calculators covering Fitness, Nutrition, Women’s Health, and more.

The Calculators in the Famalth ONE App are your smart toolkit for better health, fitness, nutrition, and wellness tracking.

What's Next​

Explore types of calculators for a detailed to understand your health trends.

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