Практические руководства

Learn to manually calculate the number of days, weeks, and months until any future date, including handling leap years and determining the target weekday.

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4 steps6 min

How to Calculate Your Next Menstrual Periods: Step-by-Step Guide

Learn to manually predict your next 6 menstrual periods using your last period start date and average cycle length. Understand the formula and avoid common errors.

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5 steps5 min

How to Calculate Lean Body Mass: Step-by-Step Guide

Learn to manually calculate Lean Body Mass (LBM) with our step-by-step guide. Understand the formula, worked examples, and common pitfalls.

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5 steps6 min

How to Manually Calculate Animal Gestation Period and Due Date: A Step-by-Step Guide

Learn to manually calculate animal gestation periods and expected due dates. Understand the formula, worked examples, common pitfalls, and when to use a calculator.

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7 min

How to Calculate Running Pace, Time, or Distance: Step-by-Step Guide

Learn to manually calculate running pace, finish time, or distance with step-by-step instructions, formulas, and real-world examples. Understand the math behind your runs.

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4 steps4 min

How to Calculate Calories Burned During Exercise: Step-by-Step Guide

Learn to manually calculate calories burned during exercise using MET values. Step-by-step guide with formula, examples, and common pitfalls. Understand your energy expenditure.

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6 steps5 min

How to Calculate Your Conception Date: Step-by-Step Guide

Learn to manually calculate your conception date from your last menstrual period (LMP) or estimated due date (EDD) with formulas and examples.

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4 steps5 min

How to Calculate Your Pregnancy Due Date and Track Progress: Step-by-Step Guide

Learn to manually calculate your pregnancy due date, current week, and trimesters using clinical formulas like Naegele's Rule. Understand the process.

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5 steps6 min

How to Calculate Your Target Heart Rate: Step-by-Step Guide

Learn to manually calculate your Target Heart Rate (THR) for exercise using the Karvonen formula. Understand MHR, RHR, HRR, and training zones for effective workouts.

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5 steps5 min

How to Calculate Ideal Weight: A Step-by-Step Guide Using Medical Formulas

Calculate your ideal weight manually using the Devine, Robinson, Miller, and Hamwi formulas. Understand the steps, formulas, and common pitfalls.

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5 steps4 min

How to Calculate Daily Protein Intake: Step-by-Step Guide

Learn to manually calculate your daily protein needs based on weight, activity level, and fitness goals. Understand the formula and see a worked example.

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5 steps5 min

How to Calculate Basal Metabolic Rate (BMR): Step-by-Step Guide

Learn to manually calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation. Understand daily calorie needs and avoid common pitfalls.

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5 steps6 min

How to Calculate Body Fat Percentage: Step-by-Step Guide

Calculate body fat percentage manually using the US Navy method. Learn the formulas, take accurate measurements, and interpret your results with a step-by-step guide.

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6 steps3 min