VO2 Max & Jack Daniels VDOT Calculator - Training Paces & Race Time Predictor
Benchmark your running performance with the gold-standard Jack Daniels Daniels Running Formula methodology.
How to Use VO2 Max & VDOT in 3 Simple Steps
Step 1: Upload
Drag & drop your .FIT, .GPX, or .TCX activity file. All processing is 100% private in your browser.
Step 2: Process
FitCrop inspects telemetry streams, removes anomalies, recalibrates metrics, or fixes binary checksums.
Step 3: Export
Download your clean Strava, Garmin, and Zwift compatible file with 1 click. Zero server wait.
Frequently Asked Questions
What is Jack Daniels VDOT?
VDOT represents your effective running VO2 Max based on actual race performance, factoring in running economy alongside aerobic capacity.
How do I determine my Interval (I) pace?
Interval pace corresponds to 95-100% of VO2 max and is usually very close to your current 5K race pace.