Lift Tool
Plate Calculator
Load a barbell with standard plates, visualize each side, and check the total instantly.
Tools
Quick, public utilities from Kai for focused calculations and training support.
Explore focused calculators and training utilities without signing in.
Fuel Tool
TDEE Estimator
Estimate daily calorie needs from body weight, body-fat percentage, and activity level.
Pace Tool
Pace Calculator
VDOT race prediction, pace↔speed conversion, and finish-time splits — built on Jack Daniels' formulas.