NEW RACER TOOL

DRC Race Weather

Trackside weather, density altitude, racing air and hourly trends—at your location or any dragstrip.

OPEN RACE WEATHER →

NEW RACER TOOL

Racer Logbook & ET Slip Predictor

Save every run, automatically capture weather and density altitude, review past performance, and predict your next run.

OPEN RACER LOGBOOK →

THE DRAG RACING CONNECTION

DRC RACER TOOLS

Fast, practical estimates for racers, crews and fans. Choose a calculator, enter your numbers and compare the result with real track data.

ET & Trap-Speed Estimator

Estimate 60-foot, 1/8-mile and 1/4-mile performance from weight and horsepower.

Race weight with driver lb Horsepower hp

Horsepower measurement Wheel HP Flywheel HP

—60 FT—1/8 ET—1/4 ET—1/4 MPH

1/8 ↔ 1/4 Conversion

Convert ET and MPH between common track distances.

Known ET secKnown MPH mph

Known distance 1/8 mile 1/4 mile

—ESTIMATED ET—ESTIMATED MPH

ET-to-Horsepower Estimator

Estimate wheel horsepower from race weight and quarter-mile ET.

Race weight lb1/4-mile ET sec

—WHEEL HP—FLYWHEEL HP*

Density Altitude Calculator

Calculate approximate density altitude from track elevation and current weather.

Track elevation ftTemperature °FBarometer inHgHumidity %

—DENSITY ALTITUDE—AIR DENSITY—RACING AIR

Tire, Gear & RPM Calculator

Calculate tire diameter, engine RPM at speed, or required rear-gear ratio.

Tire size

Width mmAspect ratio %Wheel in

Driveline

Speed mphRear gear ratioTransmission ratio

—TIRE DIAMETER—ENGINE RPM*

Two-Lane Reaction Package

Compare reaction time plus over-dial performance. Breakouts are identified automatically.

YOUR LANE

Reaction timeDial-inET

OTHER LANE

Reaction timeDial-inET

—YOUR PACKAGE—OTHER PACKAGE—ADVANTAGE

Bracket & Super Comp Dial Tool

Review recent runs, consistency and a neutral statistical baseline. Your final dial remains a racing decision.

Recent ETs 3–8 runs, separated by commasClass target optional

—MEDIAN ET—AVERAGE ET—TOTAL SPREAD—VS. TARGET