 ## Reticle Ranging Formulas

by Linden B. (Lindy) Sisk

Written February 6, 2008

This page shows ranging formulas for various reticles and dimensional units. Thanks to Robert Simeone, mathematician and rifleman, for compiling the formulas shown here.

 (1) Distance to Target(Yards)  = Height of Target (Yards)Image Size(mils) * 1000

 (2) Distance to Target(Yards)  = Height of Target (Inches)Image Size(mils) * 27.77

 (3) Distance to Target(Meters)  = Height of Target (Inches)Image Size(mils) * 25.4

 (4) Distance to Target(Meters)  = Height of Target (Meters)Image Size(mils) * 1000

 (5) Distance to Target(Meters)  = Height of Target (cm)Image Size(mils) * 10

### Minute of Angle-based Reticles

 (6) Distance to Target(Yards)  = Height of Target (inches)Image Size(MOA) * 95.5

 (7) Distance to Target(Meters)  = Height of Target (inches)Image Size(MOA) * 87.3

 (8) Distance to Target(Meters)  = Height of Target (Meters)Image Size(MOA) * 3438

 (9) Distance to Target(Meters)  = Height of Target (cm)Image Size(MOA) * 34.38

### One Inch Per Hundred Yard-based Reticles

 (10) Distance to Target(Yards)  = Height of Target (Inches)Image Size(IPHY) * 100

 (11) Distance to Target(Meters)  = Height of Target (Inches)Image Size(IPHY) * 91.44

 (12) Distance to Target(Meters)  = Height of Target (Meters)Image Size(IPHY) * 3600

 (13) Distance to Target(Meters)  = Height of Target (cm)Image Size(IPHY) * 36