JH

Juan Hernandez

Health, training and pregnancy · Calc UK

Body composition
Sport
Pregnancy
Everyday health

Juan works in exercise physiology and has spent years turning laboratory measurements into something a person can act on. He writes the body-composition, training and pregnancy calculators, and reviews anything on the site that converts a measurement into advice.

He is blunt about what these tools are. A body mass index is a ratio of two numbers and knows nothing about muscle; a calorie estimate is a population average applied to an individual; a due date is the middle of a distribution, not an appointment. Every page he writes says so, because the alternative is a visitor treating an estimate as a diagnosis.

What he does think is worth the effort: tracking a number over time rather than staring at one reading, and understanding which inputs actually move the result.

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Written by Juan Hernandez

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calculate 10 weight loss

Body fat percentage

Body surface area

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calculate 5 of body weight

calculate bmi nhs

calculate bmi online

calculate calories to lose weight

calculate conception date

calculate fertile window

calculate golf handicap

calculate half marathon pace

calculate heart rate zones

calculate how many weeks pregnant

calculate ideal body weight

calculate jeans size

calculate kcal per day

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calculate my calorie deficit

calculate my due date

calculate next period

calculate pregnancy weeks

calculate protein intake

calculate qrisk

calculate vo2 max

calculate weight loss percentage

calculate your bmi

calculate your calorie deficit

calculate your heart age

Celsius to Fahrenheit

Health Calculations

Pregnancy Health

Creatinine clearance

Cycling calories

Feels-like temperature

Fetal growth percentile

Gestational age

Heart rate reserve

Hiking calories

Implantation date

Maximum heart rate

Mean arterial pressure

Pregnancy trimester

Pregnancy weight gain

Relative humidity

Resting metabolic rate

Running calories

Reviewed by Juan Hernandez

calculate fuel consumption

calculate fuel cost for a trip

calculate fuel cost uk

calculate journey distance

calculate journey time

calculate oyster fare

calculate uber cost

Temperature converter

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