Diff Gear Ratio Calculator
Diff Gear Ratio Calculator is #31 in Utilities Paid in United Arab Emirates and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
CategoryUtilities
Price7.99 AED
Released
Rating★ 0.0 (0)
Version1.0.2
Age rating4+
First seen by us
25 Sep 2026
Rating
0.0 ★
0 ratings
Measured
Best rank now
#31
Measured
Diff Gear Ratio Calculator on the App Store
App details
App ID
6761710388
Publisher
Shanghai Sheyuan Network Technology Co., Ltd.
Content rating
4+
Where Diff Gear Ratio Calculator's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| UtilitiesPaid | #31 |
Apps near Diff Gear Ratio Calculator on the chart
Utilities Paid, around #31.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Diff Gear Ratio Calculator
Changed tire sizes and need to know what diff ratio keeps your RPM in the sweet spot? Diff Gear Ratio Calculator finds the required differential ratio for any tire, speed, and RPM combination — so you pick the right ring and pinion before you buy.
Enter tire dimensions (width, aspect ratio, wheel diameter), engine RPM, vehicle speed, and transmission ratio. Get tire diameter, circumference, revolutions per mile, and the exact diff ratio you need.
WHAT IT CALCULATES:
- Overall tire diameter from metric tire size
- Tire circumference in inches
- Revolutions per mile
- Required differential ratio for your RPM and speed target
- Actual speed at a given RPM (with known diff ratio)
- Actual RPM at a given speed (with known diff ratio)
DRIVETRAIN INPUTS:
- Engine RPM
- Vehicle speed (mph)
- Transmission gear ratio
- Transfer case ratio (for 4WD vehicles)
TIRE SIZE INPUTS:
- Tire width (mm)
- Aspect ratio (%)
- Wheel diameter (inches)
OPTIONAL KNOWN DIFF RATIO:
Enter your current or planned diff ratio to see speed-at-RPM and RPM-at-speed calculations. Compare before and after a regear or tire swap.
Built for automotive enthusiasts, 4x4 builders, and drivetrain shops. Works completely offline — no internet required.
Enter tire dimensions (width, aspect ratio, wheel diameter), engine RPM, vehicle speed, and transmission ratio. Get tire diameter, circumference, revolutions per mile, and the exact diff ratio you need.
WHAT IT CALCULATES:
- Overall tire diameter from metric tire size
- Tire circumference in inches
- Revolutions per mile
- Required differential ratio for your RPM and speed target
- Actual speed at a given RPM (with known diff ratio)
- Actual RPM at a given speed (with known diff ratio)
DRIVETRAIN INPUTS:
- Engine RPM
- Vehicle speed (mph)
- Transmission gear ratio
- Transfer case ratio (for 4WD vehicles)
TIRE SIZE INPUTS:
- Tire width (mm)
- Aspect ratio (%)
- Wheel diameter (inches)
OPTIONAL KNOWN DIFF RATIO:
Enter your current or planned diff ratio to see speed-at-RPM and RPM-at-speed calculations. Compare before and after a regear or tire swap.
Built for automotive enthusiasts, 4x4 builders, and drivetrain shops. Works completely offline — no internet required.
Latest updates
1.0.2
Added a More Pro Tools section to discover related field calculators.