The UtilityApps Blog
Deep dives, calculators, and practical tutorials for the tools you actually use. Free, no signup, written by people who use them daily.
DEV-MID · rectangleWaking up mid-cycle is why you feel groggy even after 8 hours. Here's how 90-minute sleep cycles work, and a free calculator to find your ideal bedtime or wake time.
The healthy BMI range for men explained — why muscular men often get flagged 'overweight', how waist measurement fills the gap, and when the number matters less than it looks.
How much water you actually need per day — where the 8-glasses rule came from, what changes the number, and how to calculate your own target.
The healthy BMI range for women explained — what the numbers mean, how BMI shifts with age, its limitations, and when to look beyond BMI for health.
How to calculate daily calorie needs for weight loss — TDEE, the calorie deficit math, protein targets and the common mistakes that stall progress.
What your BMI really says about your health — the history of the formula, why it fails athletes, and better measures like body fat and waist-to-hip ratio.
BMI is the most-used and most-criticized health metric. We dug through the research to find when BMI is reliable, when it lies, and what to use instead.