Health & Fitness Calculators — Free BMI, Calorie & Wellness Tools
BMI, calorie, and fitness tracking tools.
121
Tools Available
About These Health & Fitness Tools
Explore our free UK health and fitness calculators. Calculate your BMI, daily calorie needs, ideal weight, water intake, and more — all based on NHS and UK health guidelines. No account needed.
Start With Popular Health & Fitness Tools
Follow this health & fitness calculator silo from the category hub into the most useful tools, then move between related calculators from each tool page.
All Health & Fitness Tools (121)
BMI Calculator
Calculate your Body Mass Index (BMI) to see if you are in a healthy weight range.
Love Calculator
Discover your compatibility score with our fun and interactive Love Calculator.
Calorie Calculator
Calculate your daily calorie needs for weight loss, maintenance, or weight gain based on the Mifflin-St Jeor Equation.
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) to find out how many calories your body burns at rest.
Water Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate.
Ideal Weight Calculator
Find your ideal body weight range based on the Robinson formula and your height.
Dog Age Calculator
Convert your dog's age to human years accurately based on their size and weight.
Bra Size Calculator UK
Estimate a UK bra size from underbust and full-bust measurements.
Child Growth Chart Calculator UK
Explore a child growth measurement estimate.
Life Expectancy Calculator UK
Explore a general life expectancy estimate.
Drink Drive Limit Calculator UK
Understand alcohol-unit guidance before driving.
Pet Transport Cost Calculator UK
Estimate the cost of transporting a pet.
Calorie Calculator To Gain Weight
Estimate a daily calorie target for weight gain.
Resting Calorie Calculator
Estimate calories burned while at rest.
Dog Calorie Calculator
Estimate a dog's daily calorie needs.
Sleep Time Calculator
Plan a sleep schedule around sleep cycles.
Pregnancy Due Date Calculator
Estimate a due date from a last menstrual period.
Ovulation Calculator
Estimate a fertile window from cycle information.
Protein Intake Calculator
Estimate a daily protein target.
Frailty Score Calculator Uk
Use this free Frailty Score Calculator Uk for a quick, clear estimate.
Reverse Bmi Calculator
Use this free Reverse Bmi Calculator for a quick, clear estimate.
Pregnancy Bmi Calculator
Use this free Pregnancy Bmi Calculator for a quick, clear estimate.
Breastfeeding Calorie Calculator
Use this free Breastfeeding Calorie Calculator for a quick, clear estimate.
Rucking Calorie Calculator
Use this free Rucking Calorie Calculator for a quick, clear estimate.
Ivf Due Date Calculator
Use this free Ivf Due Date Calculator for a quick, clear estimate.
Love Compatibility Calculator By Date Of Birth
Use this free Love Compatibility Calculator By Date Of Birth for a quick, clear estimate.
Cat Due Date Calculator
Use this free Cat Due Date Calculator for a quick, clear estimate.
Puppy Weight Calculator
Use this free Puppy Weight Calculator for a quick, clear estimate.
Walking Weight Loss Calculator
Use this free Walking Weight Loss Calculator for a quick, clear estimate.
Horse Weight Calculator
Use this free Horse Weight Calculator for a quick, clear estimate.
Aluminium Weight Calculator
Use this free Aluminium Weight Calculator for a quick, clear estimate.
Rebar Weight Calculator
Use this free Rebar Weight Calculator for a quick, clear estimate.
Paper Weight Calculator
Use this free Paper Weight Calculator for a quick, clear estimate.
Horse Rider Weight Calculator
Use this free Horse Rider Weight Calculator for a quick, clear estimate.
Birth Chart Calculator
Use this free Birth Chart Calculator for a quick, clear estimate.
Calorie Deficit Calculator
Use this free Calorie Deficit Calculator for a quick, clear estimate.
Calorie Maintenance Calculator
Use this free Calorie Maintenance Calculator for a quick, clear estimate.
Daily Calorie Intake Calculator
Use this free Daily Calorie Intake Calculator for a quick, clear estimate.
Baby Percentile Calculator Uk
Use this free Baby Percentile Calculator Uk for a quick, clear estimate.
Creatinine Clearance Calculator
Use this free Creatinine Clearance Calculator for a quick, clear estimate.
Bradford Score Calculator
Use this free Bradford Score Calculator for a quick, clear estimate.
Bpm Calculator
Use this free Bpm Calculator for a quick, clear estimate.
Miscarriage Calculator
Use this free Miscarriage Calculator for a quick, clear estimate.
Dog Chocolate Calculator
Use this free Dog Chocolate Calculator for a quick, clear estimate.
Lambing Calculator
Use this free Lambing Calculator for a quick, clear estimate.
Cat Years Calculator
Use this free Cat Years Calculator for a quick, clear estimate.
Dog Heat Cycle Calculator
Use this free Dog Heat Cycle Calculator for a quick, clear estimate.
Steroid Conversion Calculator
Use this free Steroid Conversion Calculator for a quick, clear estimate.
Intermittent Fasting Calculator
Use this free Intermittent Fasting Calculator for a quick, clear estimate.
Water Fast Calculator
Use this free Water Fast Calculator for a quick, clear estimate.
How Long Should I Walk My Dog Calculator
Use this free How Long Should I Walk My Dog Calculator for a quick, clear estimate.
Sleep Debt Calculator
Use this free Sleep Debt Calculator for a quick, clear estimate.
Alcohol Dilution Calculator
Use this free Alcohol Dilution Calculator for a quick, clear estimate.
Epworth Sleepiness Scale Calculator
Use this free Epworth Sleepiness Scale Calculator for a quick, clear estimate.
Biorhythm Calculator
Use this free Biorhythm Calculator for a quick, clear estimate.
Dog Raisin Toxicity Calculator
Use this free Dog Raisin Toxicity Calculator for a quick, clear estimate.
Protein Intake Calculator Uk
Use this free Protein Intake Calculator Uk for a quick, clear estimate.
Heart Age Calculator Uk
Use this free Heart Age Calculator Uk for a quick, clear estimate.
The Morning After Calculator
Use this free The Morning After Calculator for a quick, clear estimate.
Baby Eye Color Calculator
Use this free Baby Eye Color Calculator for a quick, clear estimate.
Visceral Fat Calculator
Use this free Visceral Fat Calculator for a quick, clear estimate.
Puppy Feeding Calculator
Use this free Puppy Feeding Calculator for a quick, clear estimate.
Calving Calculator
Use this free Calving Calculator for a quick, clear estimate.
Keto Carb Calculator
Use this free Keto Carb Calculator for a quick, clear estimate.
Contact Lens Prescription Calculator
Use this free Contact Lens Prescription Calculator for a quick, clear estimate.
Ape Index Calculator
Use this free Ape Index Calculator for a quick, clear estimate.
Dog To Human Years Calculator
Use this free Dog To Human Years Calculator for a quick, clear estimate.
Kg To Calories
Use this free Kg To Calories for a quick, clear estimate.
Blood Pressure Chart Calculator
Use this free Blood Pressure Chart Calculator for a quick, clear estimate.
Weight In Full English Breakfasts
Use this free Weight In Full English Breakfasts for a quick, clear estimate.
Calories To Steps Mince Pie
Use this free Calories To Steps Mince Pie for a quick, clear estimate.
Pub Calories To Gym Hours
Use this free Pub Calories To Gym Hours for a quick, clear estimate.
Sugar Intake Tooth Decay Risk
Use this free Sugar Intake Tooth Decay Risk for a quick, clear estimate.
Uk Winter Vitamin D Sunlight Hours
Use this free Uk Winter Vitamin D Sunlight Hours for a quick, clear estimate.
Adoption Vs Ivf Cost Calculator Uk
Use this free Adoption Vs Ivf Cost Calculator Uk for a quick, clear estimate.
Burnout Recovery Income Loss Calculator
Use this free Burnout Recovery Income Loss Calculator for a quick, clear estimate.
Cat Litter Annual Cost Calculator
Use this free Cat Litter Annual Cost Calculator for a quick, clear estimate.
Dog Lifetime Cost Uk
Use this free Dog Lifetime Cost Uk for a quick, clear estimate.
Maternity Allowance Calculator
Use this free Maternity Allowance Calculator for a quick, clear estimate.
Pip Calculator Uk
Use this free Pip Calculator Uk for a quick, clear estimate.
Ill Health Dismissal Payment Calculator Uk
Use this free Ill Health Dismissal Payment Calculator Uk for a quick, clear estimate.
Sitting Hours Health Risk
Use this free Sitting Hours Health Risk for a quick, clear estimate.
Calories To Kj
Use this free Calories To Kj for a quick, clear estimate.
Glass Weight Calculator
Use this free Glass Weight Calculator for a quick, clear estimate.
Steel Weight Calculator
Use this free Steel Weight Calculator for a quick, clear estimate.
Body Fat Estimate Calculator Navy Method Uk
Use this free Body Fat Estimate Calculator Navy Method Uk for a quick, clear estimate.
Blood Alcohol Elimination Calculator
Use this free Blood Alcohol Elimination Calculator for a quick, clear estimate.
Baby Formula Cost Calculator
Use this free Baby Formula Cost Calculator for a quick, clear estimate.
Attendance Allowance Calculator
Use this free Attendance Allowance Calculator for a quick, clear estimate.
Alcohol Units To Grams Converter
Use this free Alcohol Units To Grams Converter for a quick, clear estimate.
Alcohol Units Per Week Calculator
Use this free Alcohol Units Per Week Calculator for a quick, clear estimate.
Calorie Burn Walking Calculator Uk Pace
Use this free Calorie Burn Walking Calculator Uk Pace for a quick, clear estimate.
Caffeine Half Life Calculator
Use this free Caffeine Half Life Calculator for a quick, clear estimate.
Carers Allowance Overlap Calculator
Use this free Carers Allowance Overlap Calculator for a quick, clear estimate.
Cholesterol Mmol Per Litre To Mg Per Dl Converter
Use this free Cholesterol Mmol Per Litre To Mg Per Dl Converter for a quick, clear estimate.
Creatinine Micromol Per Litre To Mg Per Dl Converter
Use this free Creatinine Micromol Per Litre To Mg Per Dl Converter for a quick, clear estimate.
Creatine Loading Calculator
Use this free Creatine Loading Calculator for a quick, clear estimate.
Creatine Kinase Ukat Per Litre To Iu Per Litre Converter
Use this free Creatine Kinase Ukat Per Litre To Iu Per Litre Converter for a quick, clear estimate.
Dental Treatment Cost Calculator Uk
Use this free Dental Treatment Cost Calculator Uk for a quick, clear estimate.
Dog Walker Cost Calculator
Use this free Dog Walker Cost Calculator for a quick, clear estimate.
Dog Holiday Boarding Budget Calculator
Use this free Dog Holiday Boarding Budget Calculator for a quick, clear estimate.
Dog Grooming Cost Calculator
Use this free Dog Grooming Cost Calculator for a quick, clear estimate.
Dog Daycare Cost Calculator
Use this free Dog Daycare Cost Calculator for a quick, clear estimate.
Dog Crate Size Calculator
Use this free Dog Crate Size Calculator for a quick, clear estimate.
Dog Boarding Cost Calculator
Use this free Dog Boarding Cost Calculator for a quick, clear estimate.
Fibre Intake Calculator
Use this free Fibre Intake Calculator for a quick, clear estimate.
Flea Treatment Annual Cost Calculator
Use this free Flea Treatment Annual Cost Calculator for a quick, clear estimate.
Horse Worming Schedule Calculator
Use this free Horse Worming Schedule Calculator for a quick, clear estimate.
Horse Rug Size Calculator
Use this free Horse Rug Size Calculator for a quick, clear estimate.
Horse Arena Surface Calculator
Use this free Horse Arena Surface Calculator for a quick, clear estimate.
Horse Livery Cost Calculator
Use this free Horse Livery Cost Calculator for a quick, clear estimate.
Horse Hay Cost Calculator
Use this free Horse Hay Cost Calculator for a quick, clear estimate.
Grams Protein To Calories Converter
Use this free Grams Protein To Calories Converter for a quick, clear estimate.
Grams Fat To Calories Converter
Use this free Grams Fat To Calories Converter for a quick, clear estimate.
Grams Carbs To Calories Converter
Use this free Grams Carbs To Calories Converter for a quick, clear estimate.
Pet Cremation Cost Calculator
Use this free Pet Cremation Cost Calculator for a quick, clear estimate.
Pet Insurance Excess Calculator
Use this free Pet Insurance Excess Calculator for a quick, clear estimate.
Pet Medication Cost Calculator
Use this free Pet Medication Cost Calculator for a quick, clear estimate.
Physiotherapy Session Budget Calculator
Use this free Physiotherapy Session Budget Calculator for a quick, clear estimate.
Uk Baby Clothing Size To Eu Converter
Use this free Uk Baby Clothing Size To Eu Converter for a quick, clear estimate.
Uk Baby Shoe Size To Cm Foot Length Converter
Use this free Uk Baby Shoe Size To Cm Foot Length Converter for a quick, clear estimate.