Health
Tools & Analytics
Body composition, nutrition and wellness tracking. Explore our suite of precision health calculators.
Understanding your body starts with the right numbers. Calcuva's health calculators cover BMI and TDEE, BMR, body-fat percentage, ideal weight, daily macros, calorie deficits, target heart rate, water intake, and more. Each tool uses established formulas — like Mifflin-St Jeor for metabolism — so you get results you can trust as a starting point for fitness and nutrition goals. They are designed for quick, private self-tracking: no account, no data leaving your device. Health calculators give estimates for general guidance and are not medical advice, so always consult a professional for clinical decisions. Use them to set realistic targets, track progress over time, and understand how diet and activity translate into measurable change.
Calculate the exact calories needed to reach your target weight.
Body Mass Index, BMR and Total Daily Energy Expenditure.
Estimate body fat percentage using Navy or BMI methods.
Calculate your healthy weight range based on various formulas.
Calculate daily protein, carb and fat targets for your goals.
Plan your fasting and eating windows for weight loss.
Estimate your blood alcohol level after consuming drinks.
Calculate the financial and health cost of smoking.
Estimate due date, gestational week and fertile window.
Daily hydration target and ideal bedtime windows.
Estimate your one-rep max for any lift.
Calculate pace, time, or distance for your runs.
Track your pregnancy progress week by week.
Calculate your weekly sleep deficit and get a recovery plan.
Convert average blood glucose levels to HbA1c and assess risk.
Calculate your optimal heart rate zones for fat loss and cardio.
Calculate body fat percentage using the Navy Standard.
Calculate your Basal Metabolic Rate for energy planning.
Estimate your BAC from UK alcohol units and check it against UK drink-drive limits.
Estimate your BAC the Australian way and see your legal limit.
Estimate your BAC against Canada's 0.05 warn range and 0.08 limit.