Health & Fitness Calculators
Tools to track your calories, sleep cycles, BMI, and overall wellness goals.
Calorie Calculator
Calculate exactly how many calories you need daily.
Calorie Deficit
Calculate your TDEE and daily calorie target.
BMI Calculator
Check your Body Mass Index score and category.
1RM Calculator
Calculate your one-rep max and get weight tables.
Bench Press Calc
Estimate your bench press max safely.
Sleep Cycle
Optimize bedtime based on 90-minute REM cycles.
BAC Estimator
Estimate blood alcohol levels based on biological factors.
Pregnancy Due Date
Calculate your baby's arrival date and track pregnancy weeks.
Free health calculators for BMI, calorie needs, BAC estimation, sleep cycles, and pregnancy planning. All tools run in your browser — your health data stays on your device.
Frequently Asked Questions
What health calculators are available?
BMI calculator, calorie calculator (Mifflin-St Jeor), BAC calculator, sleep cycle calculator, calorie deficit calculator, pregnancy due date calculator, and pet age calculator.
Are these tools medically accurate?
They use validated formulas (Mifflin-St Jeor for calories, standard BAC formulas) but provide population-average estimates. They are not substitutes for medical advice.
Is my health data private?
Yes. Every calculation runs locally in your browser. Your age, weight, height, and other health inputs are never sent to a server.
Should I use these tools for medical decisions?
No — use them for general wellness awareness and planning. Always consult a licensed healthcare provider for medical decisions.