- BMI calculator (kg/cm) – BMI & WHO category | CalcBE
Enter weight (kg) and height (cm) to get your BMI and WHO category instantly. Copy a shareable result link. Informational only—not medical advice.
- BMR & TDEE calculator – daily calorie needs and energy use | CalcBE
Estimate your basal metabolic rate and total daily energy expenditure with the Mifflin-St Jeor equation. Enter your age, sex, height, weight and activity level to see maintenance calories.
- 1RM (One-Rep Max) & Training Weight Calculator | CalcBE
Estimate your 1RM from weight and reps using common formulas, then convert to training weights by %1RM or target reps. Includes rounding options and Training Max (TM).
- Heart Rate Zone Calculator | CalcBE
Calculate heart rate training zones (Zone 1-5) with %HRmax, Karvonen (HRR), or optional %LTHR. Age-based HRmax estimates, Zone 2 highlight, copy/share, and custom boundaries included.
- Running Pace, Time and Distance Calculator | CalcBE
Solve running pace, time, or distance from the other two. Race presets (5K, 10K, half, marathon) with min/km or min/mile plus km/h speeds and lap splits.
- 2D geometry calculator – area & perimeter of shapes | CalcBE
Compute area and perimeter for rectangles, circles, triangles, trapezoids and regular polygons from side lengths, radii or heights, with formulas shown for homework and quick design checks.