DragCalc

Predict your quarter-mile time with real physics. Compare builds, analyze Dragy runs, and sync presets across devices.

DragCalc is the ultimate drag racing performance calculator. Predict your quarter-mile times, trap speeds, and acceleration metrics with physics-based simulation.

FEATURES: • AI-Powered Input — Describe any car and get instant specs • Quarter & Eighth Mile — Accurate ET and trap speed predictions • Compare Builds — Race up to 4 cars side-by-side with animated simulation • Slope Correction — Correct your times for track grade • Analyze Runs — Import Dragy CSV files or timeslips • Cloud Sync — Sign in to save presets across devices

PHYSICS ENGINE: • Real tire compounds (slicks, radials, street) • Surface grip modeling (prep, asphalt, concrete) • Drivetrain losses and transmission efficiency