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Free car tools
Quick calculators and checkers for everyday car decisions. Free, no sign-up, and every tool shows the formula or method it uses.
Vehicle Inspection Checklist
60+ checks and a printable report
Car Safety Checklist
For road trips, winter and new drivers
Fuel Cost Calculator
What a trip costs in fuel
Car Loan Calculator
Monthly payment and total interest
Tire Size Calculator
Compare sizes, see your real speed
Brake Fluid Checker
Can these two DOT fluids mix?
Shows its working
Each tool page explains how the result is calculated, so you can check it yourself.
Runs in your browser
Nothing you type is sent anywhere. No account, no email.
Linked to our guides
Each tool connects to in-depth CarAwareness articles on the same topic.