Automotive Tools
Free automotive, mechanical, fuel, tire, and vehicle calculators.
9 tools in this category
Bolt Pattern Measurement Tool
Estimate wheel bolt pattern diameter from lug count and measurement.
Car Depreciation Estimator
Estimate vehicle value after annual depreciation.
Engine Compression Ratio Calculator
Calculate static compression ratio from swept and clearance volume.
Engine Displacement Calculator
Calculate engine displacement from bore, stroke, and cylinder count.
Gear Ratio Calculator
Calculate gear ratio and estimated speed from RPM, tire size, and final drive.
Horsepower to Weight Calculator
Calculate horsepower-to-weight ratio for cars, bikes, and performance comparisons.
Tire Size Comparison Calculator
Compare tire diameter, sidewall, circumference, and speedometer difference.
Towing Capacity Calculator
Estimate remaining towing margin from rating, trailer weight, cargo, and passengers.
Trip Fuel Cost Calculator
Estimate trip fuel cost from distance, fuel economy, and price per gallon.
Popular Automotive Tools tools
Start with these frequently used tools in this category, or browse the full list above.
- Bolt Pattern Measurement Tool — Estimate wheel bolt pattern diameter from lug count and measurement.
- Car Depreciation Estimator — Estimate vehicle value after annual depreciation.
- Engine Compression Ratio Calculator — Calculate static compression ratio from swept and clearance volume.
- Engine Displacement Calculator — Calculate engine displacement from bore, stroke, and cylinder count.
- Gear Ratio Calculator — Calculate gear ratio and estimated speed from RPM, tire size, and final drive.
- Horsepower to Weight Calculator — Calculate horsepower-to-weight ratio for cars, bikes, and performance comparisons.
- Tire Size Comparison Calculator — Compare tire diameter, sidewall, circumference, and speedometer difference.
- Towing Capacity Calculator — Estimate remaining towing margin from rating, trailer weight, cargo, and passengers.
About Automotive Tools
Explore our collection of free automotive tools tools. All tools run directly in your browser, keeping your data private and secure. No sign-up required.
Whether you need to bolt pattern measurement tool, car depreciation estimator, engine compression ratio calculator, our tools are designed to be fast, simple, and effective. Bookmark your favorites for quick access.