MOA vs MRAD: Which Scope Units Should You Choose?
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The short answer
MOA and MRAD (often called "mil") are both just units for measuring angles through a scope. Neither one makes you more accurate on its own. MOA clicks are traditionally finer, adjusting in 1/4 MOA steps, while mil-based scopes use clean base-10 math, adjusting in 0.1 mil steps. The real rule that matters more than which system you pick is this: match your reticle and your turrets. If your reticle is marked in mils, your turrets should adjust in mils. If your reticle is marked in MOA, your turrets should adjust in MOA. Mixing the two forces you to do conversion math in your head while an animal or a timer is running, and that's where mistakes happen.
What MOA means
MOA stands for "minute of angle," and it's 1/60 of a degree — the same way a minute is 1/60 of an hour. At 100 yards, 1 MOA works out to about 1.047 inches, which shooters almost always round to a simple 1 inch for quick field math. That rounding is close enough for most hunting and target work, though it's worth knowing the actual number creeps a bit larger at distance (about 10.47 inches at 1,000 yards, not a flat 10).
What MRAD (mil) means
MRAD, or "milliradian," works on a different logic: 1 mil equals 1/1000 of whatever distance you're looking at. At 100 yards, that's 3.6 inches. At 1,000 yards, it's 36 inches. The beauty of mils is that the math scales cleanly with the metric system too — at 100 meters, 1 mil equals 10 centimeters, which follows directly from that same 1/1000 definition. If you already think in meters and centimeters, mils tend to feel more natural.
Quick comparison table
| Unit | Size at 100 yd | Size at 100 m | Typical click | Click size at 100 yd | Common with |
|---|---|---|---|---|---|
| MOA | 1.047 in | ~2.9 cm | 1/4 MOA | ~0.26 in | Hunting scopes, inch/yard shooters |
| MRAD (mil) | 3.6 in | 10 cm | 0.1 mil | 0.36 in | Tactical/PRS-style scopes, metric shooters |
Why matching reticle and turrets matters
This isn't just a tidiness preference. Guns & Ammo has documented what happens when a shooter uses a mil reticle paired with MOA turrets: every holdover or correction read off the reticle has to be converted to MOA before dialing, and in their example, a 1 mil error in that conversion cost the shooter 3 to 4 extra clicks to correct — clicks that could mean the difference between a hit and a miss, or worse, an errant shot you can't account for. The lesson is simple: whatever system your reticle speaks, your turrets need to speak it too.
First vs second focal plane and why it matters for holdovers
Where your reticle sits inside the scope also affects how you use those MOA or mil markings. In a first focal plane (FFP) scope, the reticle grows and shrinks with magnification, so the subtensions (the spacing between hash marks) stay accurate at any power setting. In a second focal plane (SFP) scope, the reticle stays the same size as you zoom, which means the markings are only true at one specific magnification — usually the highest. If you plan to hold over or hold off for wind at various zoom levels, this distinction matters as much as MOA vs. MRAD does. We cover this in more depth in our FFP vs SFP guide.
Which should you choose?
If your shooting buddies, local club, or long-range mentor all run mils, it's worth going mils yourself — consistency helps when you're borrowing gear, comparing dope cards, or getting coached. If you think naturally in inches and yards and mostly hunt inside 300 yards, MOA is perfectly fine and arguably more intuitive for that use case. But the single most important decision isn't MOA vs. MRAD — it's making sure your reticle and turret units match on whatever scope you buy. Check today's options on our scope deals page, and if you're working with a tighter budget, our budget scope buying guide can help you avoid other common mistakes.
Whichever system you pick, practice good range habits: always know your target and what's beyond it, confirm your zero before you rely on holdovers or dialed corrections, and treat every firearm as if it's loaded.
FAQ
Is MRAD better than MOA for long range?
Not inherently. Both are accurate angular measurements; MRAD's base-10 math is often considered faster for quick mental conversions, but a correctly matched MOA setup works just as well.
How many clicks is 1 MOA?
At the common 1/4 MOA click value, it takes 4 clicks to equal 1 MOA.
How many inches is 0.1 mil at 100 yards?
0.1 mil equals 0.36 inches at 100 yards.
Can I convert between MOA and MRAD?
Yes — 1 mil equals approximately 3.438 MOA. Conversion is possible, but it's easier and safer to simply match your reticle and turret units from the start.