Health & Fitness Calculators
Explore BMI, calories, body measurements, pregnancy dates, and fitness estimates with free health calculators.
Health & Fitness Calculators list
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Peptide Dose Calculator
Concentration per syringe unit in micrograms = peptide milligrams × 1000 / diluent milliliters / syringe units per milliliter. The result is concentration, not a prescribed dose.
BMI
BMI = kilograms / meters². Convert pounds by 0.45359237 and inches by 0.0254 before calculating; displayed ranges are adult screening categories.
Daily Calorie
Calculate Mifflin–St Jeor BMR: 10 × kg + 6.25 × cm − 5 × age + sex constant (−161 female, +5 male). Multiply BMR by the selected activity factor for maintenance calories.
Body Fat
The adult screening estimate uses 1.2 × BMI + 0.23 × age − 16.2 for males, or −5.4 for females. BMI uses pounds / inches² × 703.0696; no circumference measurements are used.
Water Intake
The implemented rule is daily fluid ounces = body weight in pounds × 0.5. It is a rough planning rule, not a personalized hydration prescription.
Sleep
Add exactly eight hours to the entered bedtime and wrap the clock at midnight. This tool does not calculate sleep cycles, sleep latency or an age-specific sleep requirement.