UK Health & Fitness Calculators
UK health and fitness calculators aligned with NHS guidelines. Calculate BMI using NHS ranges, body fat percentage, metabolic rate, and more. All calculators use UK terminology and NHS-aligned health ranges.
Health & Fitness Calculators
BMI Calculator
Calculate your Body Mass Index to assess weight status
Body Fat Calculator
Estimate your body fat percentage
BMR Calculator
Calculate your Basal Metabolic Rate
BMR Online
Calculate BMR online with TDEE estimates
Macro Calculator
Calculate your macronutrient needs (protein, carbs, fats)
Omni Body Fat Calculator
Calculate body fat percentage using US Navy method
Weight Loss Percentage Calculator
Calculate your weight loss percentage
Body Fat Percentage Calculator
Estimate body fat percentage
Fat Percentage Calculator
Calculate body fat percentage
Bra Size Calculator UK
Calculate your UK bra size with accurate measurements
How Much Weight Have I Lost Calculator
Calculate how much weight you have lost
How Much Water to Drink a Day Calculator
Calculate daily water intake
When Can I Drive After Drinking Calculator
Estimate when it is safe to drive after alcohol
How Many Steps to Lose Weight Calculator
Calculate steps needed for weight loss
How Long Alcohol Leave System Calculator
Estimate how long alcohol stays in your system
TDEE Calculator
Calculate Total Daily Energy Expenditure
Calorie Deficit Calculator
Calculate calorie deficit for weight loss
Online Macro Calculator
Calculate macronutrients online
Macro Nutrient Calculator
Calculate macronutrient needs
Nutrition Calculator
Calculate nutrition and dietary needs
Calorie Calculator Online
Calculate daily calorie needs online
VO2 Max Calculator
Estimate VO2 max and fitness level
Marathon Pace Calculator
Calculate marathon pace and finish time
Golf Handicap Calculator
Calculate golf handicap
Body Composition Calculator
Estimate body composition metrics
Training Pace Calculator
Calculate training and running paces
RMR Calculator
Calculate Resting Metabolic Rate (Mifflin-St Jeor)
Ideal Body Weight Calculator
Estimate ideal body weight using Devine formula
Lean Body Mass Calculator
Calculate lean body mass from weight and body fat %
Body Surface Area Calculator
Calculate BSA using Mosteller formula
Harris Benedict Calculator
Calculate BMR using revised Harris-Benedict equation
How Many Weeks Pregnant Calculator
Work out how many weeks pregnant you are from LMP or due date
How Many Days After My Period Can I Get Pregnant Calculator
Estimate fertile window: days after period you can conceive
What are Health Calculators?
Health calculators are specialised tools designed to help you understand and track various health and fitness metrics. These calculators use established formulas and medical guidelines to provide insights into your body composition, metabolic rate, and overall health status.
Whether you're starting a fitness journey, monitoring your health progress, or simply curious about your body metrics, health calculators provide valuable information. They can help you set realistic goals, track progress, and make informed decisions about your diet and exercise routines.
Our collection includes calculators for BMI (Body Mass Index), body fat percentage, BMR (Basal Metabolic Rate), and weight loss tracking. These tools are based on widely accepted medical formulas and can serve as starting points for understanding your health metrics.
Frequently Asked Questions
What is BMI and why is it important?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It's used as a screening tool to identify potential weight problems. However, BMI doesn't directly measure body fat and may not be accurate for everyone, especially athletes with high muscle mass.
How accurate are online body fat calculators?
Online body fat calculators use formulas based on measurements like height, weight, age, and gender. While they provide estimates, they may not be as accurate as professional methods like DEXA scans or hydrostatic weighing. They're best used as general guidance.
What is BMR and how can I use it?
BMR (Basal Metabolic Rate) is the number of calories your body burns at rest. Knowing your BMR helps you understand your daily calorie needs and can guide your diet and exercise planning. It's the foundation for calculating your total daily energy expenditure.
Should I consult a healthcare professional?
While our health calculators provide useful information, they should not replace professional medical advice. Always consult with a healthcare provider for personalized health assessments and before making significant changes to your diet or exercise routine.