Follow guided breathing patterns to reduce stress, improve focus, or fall asleep faster. Pick a technique and follow the animated guide.
Used by Navy SEALs to reduce stress and improve focus.
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Box Breathing Pattern
Yes, Breathing Exercise Timer is completely free to use on UtilityCove.
No. Breathing Exercise Timer runs in your browser, so your input stays on your device.
Yes. Breathing Exercise Timer works on modern mobile and desktop browsers.
BMI Calculator
Calculate your Body Mass Index using metric or imperial units with category breakdown.
Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed with this free sleep cycle calculator.
TDEE Calculator
Calculate your Total Daily Energy Expenditure using the Mifflin-St Jeor formula. Find calorie targets for weight loss, maintenance, or muscle gain.
Ideal Weight Calculator
Calculate your ideal body weight using four clinical formulas: Devine, Robinson, Miller, and Hamwi. Supports metric and imperial units.
Heart Rate Zone Calculator
Find your 5 heart rate training zones based on age or max heart rate. Includes the Karvonen formula with fat burn, aerobic, and VO₂ max zones.
Body Fat Calculator
Estimate body fat percentage using the US Navy circumference method. Enter height, neck, waist, and hip measurements to see your body fat category. Metric and imperial supported.