Fitness calculators.

Fit-o-Meter

Take a guided fitness and health check in about five minutes. Fit-o-Meter scores body metrics, lifestyle risk factors, health questions, and motor fitness into one clear report.

Body Mass Index (BMI)

Calculate your Body Mass Index (BMI) from height and weight. BMI estimates whether your weight is in a healthy range for your height — useful as a quick screening tool, not a direct measure of body fat.

Basal Metabolic Rate (BMR)

Estimate your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest to power vital organs. Use it as a baseline for daily calorie targets.

Calories per day

Find your daily calorie needs for weight loss, maintenance, or muscle gain. The calculator combines your size, age, sex, activity level, and goal into a practical target.

12 Minute Run (MET & VO2 Max)

Estimate VO2 max and MET from the Cooper 12-minute run test. Enter age, sex, and distance covered to gauge cardiovascular fitness.

Greek Proportions

Explore classical “ideal” body proportions from Greek sculpture ratios. Enter your wrist circumference to see estimated chest, waist, arm, and leg sizes — for curiosity, not medical advice.

Hidden Carbs

Estimate “hidden” carbohydrates on US-style nutrition labels. Rounding rules can show 0g carbs when a food still contains carbs — this tool helps spot the gap.

Shuttle Run / Bleep Test

Convert your 20-metre shuttle run (bleep test) level and shuttle count into a result score. Useful for coaches, PE tests, and aerobic fitness checks.

Predicting your One-Rep Max

Estimate your one-rep max (1RM) from a submaximal set. Enter the weight you lifted and how many reps you completed to get 1RM and common training percentages.

Fat Burner

Estimate calories burned for common exercises and sports. Pick an activity, enter your weight and duration, and get a rough calorie burn guide.

Body Composition

Estimate body fat percentage, lean mass, and fat mass using simple circumference-style inputs for triceps and calf. A quick body composition check alongside BMI.