Rifle Scope MOA Adjustment Calculator
Convert bullet drop at any range to MOA or MIL scope adjustments.
Enter impact error and range to get exact click counts for your turrets.
MOA stands for Minute of Angle — 1/60th of a degree. At 100 yards, 1 MOA equals 1.047 inches. At 200 yards it equals 2.094 inches; at 500 yards, 5.235 inches. Many shooters round to “1 inch per 100 yards” for quick mental math — close enough for most hunting ranges.
To find the MOA correction for a given impact error:
MOA = (error in inches / range in yards) × 95.49
Simplified: MOA ≈ error_inches × (100 / range_yards)
MIL (milliradian) is the other common unit. 1 MIL = 3.438 MOA = 3.6 inches at 100 yards. Tactical scopes often use MIL/MIL (MIL reticle, MIL turrets). Most American hunting scopes use MOA/MOA.
Common turret click sizes: 1/4 MOA per click: standard for most hunting and target scopes 1/8 MOA per click: finer, common on benchrest and precision long-range scopes 1/2 MOA per click: older military and budget scopes 0.1 MIL per click: standard for MIL-based tactical scopes
Click count = total correction / click size
Always move the point of impact in the direction you want the bullet to go. If your shot hits low and left, you need up and right adjustment. On most scopes, elevation turret: counter-clockwise is up. Windage turret: counter-clockwise is left. Labels on the turret confirm direction.
After applying your corrections, fire a 3-shot confirmation group before hunting or competition. The confirmation group tells you whether the adjustment landed where the math predicted.