Health Tools
Free health tools: macro calculator, BMI calculator, unit converter, and eye break timer (20-20-20 rule). Privacy-first.
Health Tools on WebRecast
- Macro & Calorie - Calculate your daily macros, BMR & TDEE with the Mifflin-St Jeor formula. Metric & imperial – free, private, no account. Start now!
- BMI Calculator - Calculate your BMI and ideal weight range instantly. Metric & imperial supported – browser-based, private, no signup needed. Check now!
- Unit Converter - Convert length, weight, temperature, data & more instantly. Dozens of units covered – browser-based, no download, 100% free. Convert now!
- Eye Break 20-20-20 - Protect your eyes with the 20-20-20 rule. Get gentle reminders during long screen sessions – browser-based, no install needed. Start now!
- Calorie Calculator - Calculate daily calorie needs with the Mifflin-St Jeor equation. Get BMR, maintenance, deficit and surplus calories. Free online tool.
- Water Intake Calculator - Calculate your daily water intake based on weight, activity, and climate. Get recommendations in liters and glasses. Free online tool.
- Sleep Calculator - Calculate the best bedtime or wake-up time based on sleep cycles. Wake up refreshed with 90-minute cycle planning. Free tool.
- Heart Rate Zone Calculator - Calculate target heart rate zones for exercise. Get personalized training zones with the Karvonen formula. Free online calculator.
- Body Fat Calculator - Calculate body fat percentage with the US Navy method. Get fat mass, lean mass, and fitness category. Free online calculator.
- Pregnancy Calculator - Calculate your due date and track pregnancy milestones. See current week, trimester, and key dates. Free online pregnancy calculator.
