Enter your age to instantly estimate your maximum heart rate and see five training zones (Warm‑up, Fat Burn, Aerobic, Anaerobic, and VO₂ Max) with target beats per minute. Optionally add your resting heart rate for a more personalized Karvonen‑formula zone calculation. math master tool Target Heart Rate Calculator 🌙 Age Resting Heart Rate (optional) Measure…

Enter the weight you lifted and how many reps you performed to instantly estimate your one‑rep max using four proven formulas (Epley, Brzycki, Lombardi, and O’Conner). The calculator also gives a multi‑formula average and supports both kilograms and pounds. math master tool One Rep Max Calculator 🌙 Weight Lifted kglb Reps Performed 💡 Most accurate…

Select an activity from the list (each with a MET value), enter your weight and duration in minutes or hours, and the calculator instantly shows the total calories burned plus per‑minute and per‑hour estimates. mathmastertool.online Calories Burned Calculator 🌙 Activity Weight kglb Duration minuteshours Calculate Reset Total Calories Burned 📋 Copy ⬇️ Download ✉️ Email…

Enter your height in centimeters or inches, and the calculator instantly determines your healthy weight range based on the standard BMI range of 18.5 to 24.9. It shows the minimum, maximum, and midpoint healthy weights in both kilograms and pounds. math master tool Healthy Weight Calculator 🌙 Height cmin Based on a healthy BMI range…

Select your gender, enter your weight and height in metric or imperial units, and optionally add your age. The calculator instantly estimates your lean body mass using the Boer formula, then shows your fat mass and estimated body fat percentage. mathmastertool.online Lean Body Mass Calculator 🌙 Gender MaleFemale Age (optional) Weight kglb Height cmin 💡…

Select your gender, enter your age, weight, height, waist (abdomen), neck, and hip measurements (for females). The calculator instantly computes your body fat percentage using the official U.S. Army tape test formula, compares it to the age‑adjusted maximum, and tells you whether you pass or fail. math master tool Army Body Fat Calculator 🌙 Gender…

Choose whether to calculate from your last menstrual period, due date, or a known conception date, then optionally adjust your cycle length and luteal phase. The calculator instantly shows your estimated conception date, a fertile window, and your projected due date. math master tool Conception Calculator 🌙 Calculate based on Last Menstrual PeriodDue DateConception Date…

Enter the first day of your last menstrual period and your cycle length (typically 28 days). The calculator instantly estimates your due date, current gestational age in weeks and days, the trimester you’re in, days remaining until delivery, and both the conception and trimester end dates. math master tool Pregnancy Calculator 🌙 First Day of…

Choose whether you want to calculate pace, total time, or distance, then enter the two known values (e.g., distance and time to get pace). The calculator instantly shows your result, along with your speed in km/h and mph, and a splits table for common race distances. Math master tool Pace Calculator 🌙 Calculate Pace (time…