Fitness & Health Tools
Quick calculators for BMI, calories, body fat, basal metabolic rate, ideal weight, pace, and pregnancy timelines—built for clarity and speed.
BMI Calculator
Body Mass Index with healthy ranges and unit switching.
Calorie Calculator
Daily calories for maintenance, loss or gain using activity level.
Body Fat Calculator
Estimate body fat % from tape measurements or US Navy method.
BMR Calculator
Basal metabolic rate using Mifflin-St Jeor & alternatives.
Ideal Weight Calculator
Healthy weight ranges by height using multiple formulas.
Pace Calculator
Convert distance, time, and pace—per km/mi with splits.
Pregnancy Calculator
Gestational age from LMP/conception with trimester dates.
Pregnancy Conception Calculator
Estimate conception window from due date or LMP.
Due Date Calculator
Predict due date using Naegele’s rule and cycle length.
Need a calculator we don’t have yet?
Request a fitness/health tool and we’ll prioritize it.
Suggest a ToolFitness & Health Tools FAQ
Are results medical advice?
No. These are educational estimates. For medical decisions, consult a qualified professional.
Do these tools support metric & imperial?
Yes—each calculator will let you choose units (kg/cm or lb/ft-in, km/mi, etc.).
How accurate is BMI?
BMI is a population-level screen and doesn’t separate fat from muscle. Use with other measures like waist, body fat %, and clinical guidance.