endurance performance tool
Training Zone Calculator
Calculate your accurate anaerobic and aerobic cardiovascular workout boundaries using your Threshold Heart Rate.
Interactive Calculator System
172
110 210
Real-time Calculated Outputs
Zone 2 Aerobic (Base)
146
Zone 4 Lactate Threshold163 - 170 bpm
Zone 5 Anaerobic Capacity> 175 bpm
Use these cardiovascular zones to program your training: • Zone 2 (Aerobic Stamina): 146 - 153 bpm • Zone 4 (Lactate Threshold): 163 - 170 bpm • Zone 5 (Anaerobic Speed): > 175 bpm.
Methodology & Formula: Lactate Threshold Cardiac Model
Calculates boundaries based on LTHR: Zone 1 (Recovery) < 85%, Zone 2 (Aerobic) 85-89%, Zone 3 (Tempo) 90-94%, Zone 4 (Sub-Threshold) 95-99%, Zone 5 (Anaerobic) >= 100%.
Standard Reference Calculations
Threshold HR of 170 bpm
Inputs: LTHR: 170
Output: Zone 2 (Aerobic): 145-151 bpm
Frequently Asked Questions
Get answers to common queries based on clinical literature and fitness research.
LTHR represents your actual cellular metabolism threshold, making it infinitely more precise than general formulas like "220 minus age" for serious athletes.