Lactate Zones Converter - Convert between 3, 5 and 6 lactate zones
Visual lactate zone converter: drag boundaries to adjust, auto-convert between 3, 5, and 6 zone models. Free tool for endurance athletes.
What is a Lactate Zones Converter?
The Lactate Zones Converter translates blood lactate concentration zone boundaries between 3, 5, and 6-zone training models. Lactate-based zones provide direct insight into metabolic intensity and are the gold standard for endurance training prescription.
How to Use the Lactate Zones Converter
Enter your maximum lactate value and zone boundaries for any model. The converter automatically calculates equivalent boundaries for the other systems. Drag zone boundaries on the visual bar for interactive adjustment.
Benefits of Lactate Zone Training
- Direct measurement of metabolic stress and energy system engagement
- Most accurate method for setting training intensity thresholds
- Track aerobic development through lactate curve changes over time
- Precisely target LT1 and LT2 thresholds for endurance improvement
Frequently Asked Questions
What lactate values define the key thresholds?
LT1 (aerobic threshold) typically occurs around 1.5-2.0 mmol/L, while LT2 (anaerobic threshold) is usually around 3.5-4.0 mmol/L. However, these values are highly individual and should be determined through proper lactate testing.
How often should I retest lactate zones?
Every 6-8 weeks during structured training, or whenever you notice significant fitness changes. Lactate curves shift as aerobic fitness improves, so regular testing ensures your zones remain accurate.