Gearhead Free - No Ads

If you are a hobby gearhead, you’ll want Gearhead Free! Gearhead Free is the free calculator app that us gearheads use for performance automotive parameters. It calculates engine, gearing & tire parameters. Gearhead Free works in both standard and metric units so you can select the most compatible parts for your application.

Gearhead Free calculates or estimates:

Speed/Gearing
- Engine RPM from vehicle speed, gearing, tire size
- Vehicle Speed from engine RPM, gearing, tire size
- Tire Diameter and Cross section width from sidewall size
- Simple gear ratios based on drive and driven tooth count

Engine
- Displacement from cylinders, bore, and stroke
- Bore/Stroke ratio
- Static Compression Ratio
- Compression Height (piston wrist pin height)
- Head gasket volume (from bore and compressed thickness if round)

If you are looking for more please check out our paid “Gearhead" apps.
None of our apps have adds or use special permissions.
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Information pages access more intuitive.
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Additional Information

Updated
April 12, 2019
Size
4.1M
Installs
100+
Current Version
2.1
Requires Android
4.0 and up
Content Rating
Everyone
Permissions
Offered By
Innovate Engineering LLC
Developer
116 N 3RD ST STE 529 PALMYRA, WI 53156-9347
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