Convert alignment toe from inches or mm to degrees, or degrees to inches, using your tire diameter; typical tire sizes included or enter your own.

Toe angle = arctan(toe รท diameter the toe is measured across). Total toe gives total degrees; per-wheel toe gives per-wheel degrees.

Fractions like 1/16 work. Negative means toe-out.

Alignment charts convert toe across the tire diameter. Typical diameters shown; pick Custom for your own tire or rim.

Optional settings

Alignment Inches To Degrees Formula

This calculator uses a simple proportional relationship. If you have defined (or measured) a conversion factor C for your specific setup (inches per degree), then the linear distance I and the angle D are related by:

I = D ร— C

Variables:

  • I is the linear distance (inches)
  • D is the angle (degrees)
  • C is the conversion factor for your measurement method (in/ยฐ)

To calculate the length in inches, multiply the angle in degrees by the conversion factor. Conversely, to find the angle in degrees, divide the length in inches by the conversion factor. (If you are converting a true geometric offset measured over a baseline length L, a common relationship is D = arctan(I/L) ร— 180/ฯ€; in that case C is not a universal constant and depends on L.)

Inches to Degrees Conversion Table (Example: assumes 10 in per 1ยฐ)
Inches (in) Degrees (ยฐ)
1/160.006
โ…›0.013
1/60.017
ยผ0.025
โ…“0.033
โ…œ0.038
ยฝ0.050
โ…0.063
โ…”0.067
ยพ0.075
โ…ž0.088
10.100
1ยผ0.125
1โ…“0.133
1ยฝ0.150
1ยพ0.175
20.200
2ยฝ0.250
30.300
40.400
*Illustrative factor only: enter 10 in/ยฐ explicitly to reproduce this table. Formula: degrees = inches รท 10. This is not a universal wheel-alignment constant.

What is Alignment Inches To Degrees?

โ€œInches to degreesโ€ is a way to translate a linear offset (inches) into an angular change (degrees) when you either (a) have a defined proportional factor (inches per degree) for a particular method, or (b) you know the geometry (a baseline length) and use trigonometry. In automotive alignment, linear toe measurements (inches or mm) and toe angles (degrees) are related by the wheel/tire measurement geometry, so the conversion depends on where and how the distance is measured.

How to Calculate Alignment Inches To Degrees?

The following steps outline how to calculate the alignment inches to degrees using a defined conversion factor.

  1. First, select what to find: toe degrees from inches or mm, toe inches from degrees, or a calibration factor.
  2. Enter the known length or angle using its matching unit control.
  3. Pick the tire diameter the toe is measured across, or enter your own diameter or inches-per-degree factor (C); enter both length and angle when solving for the factor.
  4. Select Calculate. Across a diameter, angle = arctan(toe รท diameter); with your own factor, I = D ร— C, D = I / C, or C = I / D.
  5. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Example (select Toe inches from degrees, then Own calibration):

Angle in degrees (D) = 2

Conversion factor (C) = 5 in/ยฐ

Calculated length in inches (I) = D ร— C = 2 ร— 5 = 10 in