4x4 Crawl Ratio Calculator
The Crawl Ratio is a critical number for off-road enthusiasts, especially in rock crawling. It represents the total gear reduction of your vehicle in 4-Low. A higher crawl ratio means more torque at the wheels and better control at ultra-low speeds without stalling the engine.
Drivetrain Reduction Tool
What is a good Crawl Ratio?
- 30:1 to 40:1: Standard for most factory 4x4s. Good for sand and light trails.
- 50:1 to 70:1: Excellent for technical off-roading and moderate rock crawling.
- 80:1 to 100:1+: Extreme rock crawling territory for custom-built rigs.
Disclaimer: This ratio calculates mechanical leverage only. It does not account for tire size, engine torque, or torque converter slip in automatic transmissions. Always verify your drivetrain specs from the manufacturer service manual.