About Gearhead Light
This simple Gearhead Light app is the free version that calculates engine compression ratio, speed, RPM, tire size, etc. There are still no ads or special phone access. If you are a hobby gearhead, you’ll want Gearhead...
This simple Gearhead Light app is the free version that calculates engine compression ratio, speed, RPM, tire size, etc. There are still no ads or special phone access.
If you are a hobby gearhead, you’ll want Gearhead Light! Gearhead Light is the free calculator app that us gearheads use for performance automotive parameters. It calculates engine, gearing & tire parameters. Gearhead Light works in both standard and metric units so you can select the most compatible parts for your application.
Gearhead Light 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 ads or use invasive phone permissions
Previous Versions
Here you can find the changelog of Gearhead Light since it was posted on our website on 2023-09-07 09:17:22.
The latest version is and it was updated on 2024-04-22 14:17:18. See below the changes in each version.
Gearhead Light version -
Updated At: 2023-10-28
Disclaimer
Official App Store Link
We do not host Gearhead Light on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
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