DragCalc

Real physics, real numbers. Dial in your build and know what it'll run before you ever stage on the line.

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