❤️Calculators
Heart Rate Calculator
Compute max HR (220 − age) and training zones (fat burn, aerobic, anaerobic) using the Karvonen method.
- Max HR
- HR reserve
Training zones
How does it work?
Max HR is estimated by the classic formula 220 − age. Training zones are percentages of that HR.
If you provide resting HR we use the Karvonen method: zone = rest + (max − rest) × percentage. More accurate because it considers your fitness.
Estimate. Professional athletes should do an ergometric test.
Related Tools
🏠
Rent Adjustment Calculator
Compute annual rent adjustment by IGP-M or IPCA accumulated in the last 12 months (manually configurable).
🤰
Pregnancy Calculator
Compute estimated due date (EDD), gestational age and trimester from the last menstrual period (LMP).
🌷
Fertile Period Calculator
Compute fertile window and ovulation day from the first day of the last cycle and the average cycle length.