The QuickFitnessTools Blog
Plain language guides that turn health science into action. No hype, no jargon.
How Do You Calculate Your BAC?
Learn how blood alcohol content is estimated with the Widmark formula, what raises it, and how to read your number safely.
Read article →How To Calculate Body Surface Area?
A clear guide to body surface area, the Mosteller formula, and why doctors use BSA more than weight for dosing.
Read article →How To Calculate Your Body Fat Percentage?
Measure your body fat percentage with the US Navy tape method, learn healthy ranges, and see how to lower it.
Read article →How To Calculate Ideal Body Weight?
Estimate a healthy body weight with the Devine and Robinson formulas, and learn why a sensible range beats one number.
Read article →How To Calculate Macros For Fat Loss?
Build macros for fat loss step by step, from calories to protein, carbs, and fat, with a worked example.
Read article →How To Calculate Metabolic Age?
Understand metabolic age, how it compares your BMR to age averages, and the habits that lower it.
Read article →How To Calculate One Rep Max?
Estimate your one rep max safely with the Epley formula, then use it to set smart training loads.
Read article →How To Calculate Pregnancy Week By Week?
Count pregnancy week by week from your last period, learn the trimesters, and see when dates can shift.
Read article →How Do You Calculate Date Of Conception?
Find your likely date of conception from your last period or your due date, with a simple worked example.
Read article →How To Calculate Next Period Date?
Predict your next period date from your cycle length, learn why cycles drift, and track them with ease.
Read article →How To Calculate How Much Protein I Need?
Work out how much protein you need from your weight and goals, with clear per kilogram targets.
Read article →How To Calculate Water Intake?
Set a daily water intake target from your weight and activity, and learn how to replace what you sweat.
Read article →How To Calculate Chronological Age?
Calculate your exact chronological age in years, months, and days, including how leap years are handled.
Read article →How To Calculate Adjusted Age?
Learn adjusted age for premature babies, why it matters, and how to work it out from gestational weeks.
Read article →How To Calculate Lunar Age?
Understand lunar age, the East Asian counting system, and why it often runs a year or two ahead.
Read article →How To Calculate Biological Age?
Estimate your biological age from lifestyle and health markers, and learn the habits that lower it.
Read article →How To Calculate Age Of A Dog?
Calculate a dog's age the modern way, beyond the seven year myth, with size and breed in mind.
Read article →How Do You Calculate A Due Date With IVF?
Calculate an IVF due date from the transfer date and embryo age, with a clear worked example.
Read article →How To Calculate Lean Body Weight?
Estimate lean body weight with the Hume formula, see why it matters, and learn how to build it.
Read article →How To Calculate Body Shape?
Find your body shape from bust, waist, and hip measurements, and learn what each of the five shapes means.
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