Free VIN Decoder & Car Calculators
Plain Car Tools decodes any 17-character VIN for free using the U.S. government's NHTSA vPIC database, then checks NHTSA recall campaigns for that make, model and year. It also compares tire sizes and calculates engine RPM from gear ratios. Everything runs in your browser with no sign-up.
Year, make, model, engine and plant from any VIN.Recall check
NHTSA recalls by make, model and year.Tire size calculator
Diameter, sidewall, revs per mile and speedometer error.Gear ratio calculator
Highway RPM for any axle ratio and tire size.
Not a government site. Plain Car Tools is an independent, free tool. Vehicle and recall data come from the U.S. National Highway Traffic Safety Administration (NHTSA) public APIs (vPIC and Recalls). NHTSA does not endorse this site. For official recall status by VIN, use nhtsa.gov/recalls. Results are general information, not mechanic advice. Have a qualified mechanic or dealer inspect your vehicle before acting on them.
FAQ
Is this VIN decoder free?
Yes. Every tool here is free, with no account or sign-up. Ads keep the site running.
Where does the vehicle data come from?
VIN details and recalls come from NHTSA's public vPIC and Recalls APIs. Your browser asks NHTSA directly; we don't store VINs.
Is this an official government site?
No. It's an independent site that uses free public NHTSA data. For official recall status by VIN, use nhtsa.gov/recalls.