❤️ Health Calculators
10 free tools — no signup, no paid tier
Use simple health calculators for everyday estimates such as calories, BMR, body fat, ideal weight, water intake and pace. These tools are useful for planning and tracking, but they are not medical advice.
Calorie Calculator
Daily calorie needs based on age, weight, activity.
Heart Rate Zones Calculator
Target heart rate zones for fat burn, cardio.
Water Intake Calculator
Daily water intake based on weight and activity.
Body Fat Calculator
Estimate body fat percentage.
Ideal Weight Calculator
Ideal body weight by height.
Pregnancy Due Date Calculator
Calculate due date from last period.
Running Pace Calculator
Calculate pace, time or distance for any run.
BMR Calculator
Basal Metabolic Rate — calories burned at rest.
One Rep Max Calculator
Calculate 1RM for bench, squat, deadlift.
Ovulation Calculator
Calculate fertile window and ovulation date.
Free health calculators for everyday estimates
Use these tools to estimate calories, metabolism, hydration, body composition and pace. They are helpful for planning, but they do not replace medical guidance.
Popular health workflows
- Calorie Calculator for daily energy estimates.
- BMR Calculator for basal metabolic rate.
- Body Fat Calculator for body composition estimates.
- Ideal Weight Calculator for broad weight ranges.
- Water Intake Calculator for hydration planning.
Health calculators FAQ
Are these tools medical advice?
No. They provide general estimates only. For medical decisions, ask a doctor or qualified health professional.
Why can results differ from other calculators?
Different formulas and assumptions can produce different estimates, so treat results as a planning range.