Life & health calculators

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• 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).

B

• BMI calculator – body mass index in metric units | CalcBE
  Enter your weight and height to calculate your BMI, see the WHO category, and copy a shareable result link. Informational only—no medical diagnosis.
• Body Fat Percentage Calculator | US Navy & BMI | CalcBE
  Estimate your body fat percentage using US Navy circumference and BMI (Deurenberg) methods. Switch between metric and US units, see estimated fat and lean mass, and use this free calculator to track your fitness and h…

C

• Calorie & Weight-loss Planner | TDEE, Targets, Timeline | CalcBE
  Estimate your TDEE, set a calorie target to hit your goal weight by a chosen date, or see how long it will take at your current intake. Includes macro split guidance. Informational only.

H

• 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.

I

• Ideal weight calculator – Devine, Hamwi and BMI ranges for adults | CalcBE
  Estimate ideal body weight with the Devine, Hamwi, Robinson and Miller formulas, set a custom BMI goal, and compare kg/lb outputs. Informational only.

P

• Pregnancy Due Date Calculator | EDD & Gestational Age | CalcBE
  Estimate your due date, track gestational age today, and see trimester and term milestones from LMP, conception, IVF transfer, or ultrasound inputs. Informational only.