MOA / MRAD calculator: clicks, inches and mils
Quick answer: to turn a miss into a scope correction, divide how far you missed by what one unit covers at that range. 1 MOA is about 1.047 inches at 100 yards; 1 MRAD (mil) is 3.6 inches at 100 yards, and both grow with distance. Enter your distance and your miss below and the calculator returns the exact MOA, mils and turret clicks to dial, plus which way to turn each knob. It runs in your browser, in inches or centimeters, and needs no sign-up.
Calculate your adjustment
Turn on JavaScript for the live result. The reference table and worked example below give you the same math by hand.
Zero your rifle first, fire a group, then measure the center of that group to your point of aim. Feed that distance and offset into the tool. A calculator moves your dials to where the group already is, so it is only as good as a clean, repeatable group. See how to sight in a rifle scope for the full zeroing routine.
What one MOA and one MRAD cover at each distance
This is the reference the calculator uses. One MOA is about 1.047 inches at 100 yards and one MRAD is exactly 3.6 inches at 100 yards; both scale linearly, so you can read any range off the table or multiply the 100 yard figure by your distance in hundreds of yards.
| Distance | 1 MOA | 1 MRAD (mil) | 1/4 MOA click | 0.1 mil click |
|---|---|---|---|---|
| 100 yd | 1.05 in | 3.60 in | 0.26 in | 0.36 in |
| 200 yd | 2.09 in | 7.20 in | 0.52 in | 0.72 in |
| 300 yd | 3.14 in | 10.80 in | 0.79 in | 1.08 in |
| 400 yd | 4.19 in | 14.40 in | 1.05 in | 1.44 in |
| 500 yd | 5.24 in | 18.00 in | 1.31 in | 1.80 in |
Metric: 1 MRAD covers 10 cm at 100 m (and 1 cm at 10 m); 1 MOA covers about 2.91 cm at 100 m. One mil equals 3.438 MOA, so the two systems measure the same angles in different units. For which to run, see MOA vs MRAD explained.
Worked example (do it by hand)
Say your group prints 6 inches low at 200 yards. One MOA is 2.09 inches at 200 yards, so 6 divided by 2.09 is about 2.9 MOA up. On a 1/4 MOA turret that is roughly 11 clicks up (2.9 divided by 0.25). In mils, one mil is 7.2 inches at 200 yards, so 6 divided by 7.2 is about 0.83 mil up, which is about 8 clicks on a 0.1 mil turret. Because the group is low, you dial the elevation turret up to bring impact up to aim.
FAQ
How do you calculate a scope adjustment in MOA?
Divide how far your shot missed by what one MOA covers at that distance. One MOA is about 1.047 inches at 100 yards and scales with range, so it is roughly 2.09 inches at 200 yards and 5.24 inches at 500 yards. If you are 6 inches low at 200 yards, that is 6 divided by 2.09, or about 2.9 MOA up. On a 1/4 MOA turret each click is a quarter MOA, so 2.9 MOA is about 11 clicks up.
How do you calculate a scope adjustment in MRAD (mils)?
Divide the miss by what one mil covers at that distance. One MRAD is exactly 3.6 inches at 100 yards, 7.2 inches at 200 yards, and 18 inches at 500 yards, or 10 cm at 100 m. A 6 inch miss at 200 yards is 6 divided by 7.2, about 0.83 mil. On a 0.1 mil turret each click is a tenth of a mil, so 0.83 mil is about 8 clicks.
How many inches is 1 MOA and 1 MRAD at 100 yards?
One MOA covers about 1.047 inches at 100 yards, which almost everyone rounds to 1 inch. One MRAD (mil) covers 3.6 inches at 100 yards. Both scale linearly with distance, so at 300 yards 1 MOA is about 3.14 inches and 1 mil is 10.8 inches.
How many clicks is 1 MOA on a 1/4 MOA scope?
Four clicks. A 1/4 MOA turret moves your point of impact one quarter MOA per click, so four clicks equal 1 MOA, which is about 1 inch at 100 yards, 2 inches at 200 yards and so on. To dial 3 MOA you would turn 12 clicks.
Which way do I turn the turret to move my point of impact?
Move the point of impact toward the center of the target. If your group is low, dial the elevation turret up; if it is high, dial down. If the group is left, dial the windage turret right; if it is right, dial left. Most turrets are marked UP and R (right) with arrows, and the calculator on this page tells you the direction based on where your shot landed.
Does this calculator work in metric (cm and meters)?
Yes. Switch the units to metric and enter your miss in centimeters and your distance in meters. The math is the same: 1 MRAD covers 10 cm at 100 m, and 1 MOA covers about 2.91 cm at 100 m. The calculator returns MOA, mils and turret clicks either way.
Related: MOA vs MRAD · mil dot ranging calculator · MOA dot size (2 vs 3 vs 6 MOA) · how to adjust a rifle scope · how to sight in a rifle scope · best rifle scopes 2026.