Convert MOA (minutes of angle) to MIL (milliradians / MRAD) and back with exact math. Built for long-range shooters, hunters, and competitors who need fast, reliable scope adjustments.
Formula used: 1 MIL = 3.43774677 MOA and 1 MOA = 0.29088821 MIL.
Find how much an adjustment moves impact at a given distance.
The MOA to MIL calculator on this page is designed to solve one of the most common real-world problems in long-range shooting: converting between two angular adjustment systems quickly and correctly. Whether you run a MOA-based scope, a MIL-based optic, or regularly exchange data with shooters using different systems, precise conversion matters. A small mistake in conversion can mean missing steel, dropping points in competition, or taking an uncertain shot in the field.
Both MOA and MIL are angular units. They do not directly represent inches, centimeters, or any fixed linear distance by themselves. Instead, they represent an angle that grows in linear size as range increases. That is why understanding the angle first, then translating to linear movement at distance, is critical for repeatable corrections.
MOA stands for minute of angle. A full circle has 360 degrees, each degree has 60 minutes, and each minute is one MOA. Because it is angular, one MOA subtends a larger linear size as distance increases. At 100 yards, 1 MOA is approximately 1.047 inches. Many shooters round this to 1 inch at 100 yards for quick field math, but exact work should use 1.047 inches.
MOA is common in many hunting and precision scopes, especially in the U.S. Typical turret click values are 1/4 MOA, 1/8 MOA, or sometimes 1/2 MOA. A 1/4 MOA click at 100 yards moves point of impact by roughly 0.26175 inches (often rounded to 0.25 inch in practical language).
MIL in modern optics typically means milliradian (MRAD). One radian is an angular measure based on circle geometry, and one milliradian is one-thousandth of a radian. In shooting terms, 1 MIL subtends exactly 10 cm at 100 meters, and 3.6 inches at 100 yards (approximately 3.438 MOA). This clean metric relationship is one reason MIL is popular in tactical, law enforcement, and PRS-style environments.
Most MIL scopes adjust in 0.1 MIL clicks, meaning each click equals 1 cm at 100 meters or roughly 0.36 inch at 100 yards. MIL systems are often favored for faster communication and easier spotter-shooter correction in mixed terrain and varying distances.
The exact conversion constants are:
To convert MOA to MIL: MIL = MOA ÷ 3.43774677
To convert MIL to MOA: MOA = MIL × 3.43774677
Example: If your correction is 6.8 MOA and your scope is MIL, then 6.8 ÷ 3.43774677 = 1.978 MIL, usually dialed as 2.0 MIL depending on precision and environment.
In practical shooting, conversion errors stack up. A small rounding error at short range may be irrelevant, but at 800, 1,000, or 1,200 yards, even minor angular mistakes can become misses. Wind calls, unstable positions, target movement, and environmental shifts already make long-range shooting difficult. Conversion errors are avoidable and should not be part of your miss budget.
Using a dedicated calculator helps when:
Neither system is universally “better.” The best system is the one that matches your optic, reticle, and workflow. Consistency is more important than ideology. If your scope turrets and reticle use the same unit (MOA/MOA or MIL/MIL), your corrections become faster and less error-prone.
MOA advantages often include familiar inch-based intuition for U.S. shooters and very fine click options like 1/8 MOA on certain scopes. MIL advantages include clean decimal turret values (0.1, 0.2, 0.3), metric compatibility, and common usage in team communication. In competition and tactical settings, MIL is extremely common because fast math and concise calls are useful under time pressure.
Example 1: Your spotter gives 2.5 MOA up. Your MIL scope needs the equivalent. 2.5 ÷ 3.43774677 = 0.727 MIL. You could dial 0.7 MIL and hold a touch extra if needed.
Example 2: You see 1.2 MIL right wind hold in your reticle but need to explain it in MOA to a teammate. 1.2 × 3.43774677 = 4.125 MOA.
Example 3: You dial 0.6 MIL elevation at 400 yards and want linear movement estimate. Since 1 MIL at 100 yards is 3.6 inches, at 400 yards it is 14.4 inches. So 0.6 MIL is about 8.64 inches.
| MOA | MIL | MIL | MOA |
|---|---|---|---|
| 1 | 0.291 | 0.1 | 0.344 |
| 2 | 0.582 | 0.2 | 0.688 |
| 3 | 0.873 | 0.3 | 1.031 |
| 5 | 1.454 | 0.5 | 1.719 |
| 8 | 2.327 | 0.8 | 2.750 |
| 10 | 2.909 | 1.0 | 3.438 |
| 15 | 4.363 | 1.5 | 5.157 |
| 20 | 5.818 | 2.0 | 6.875 |
A reliable long-range process is not only about having good gear. It is about repeatable habits: verify zero, confirm data at known distances, track atmospherics, and communicate corrections clearly. Unit consistency is one of the easiest process improvements you can make. If your team uses both systems, designate a conversion method and standard rounding policy before the stage or hunt begins.
The best outcomes come from a complete workflow:
In modern rifle optics, MIL generally refers to milliradian (MRAD). In practical use for scope adjustments, they are treated the same.
1 MIL equals 3.43774677 MOA.
1 MOA equals 0.29088821 MIL.
Choose the system you will use consistently with your reticle, turret, spotter calls, and ballistic app. Consistency beats theory.
Yes, but convert the angular value first, then map to your click increment. For example, 0.1 MIL per click or 1/4 MOA per click.
This MOA to MIL calculator is built to be fast, accurate, and practical. Use it before matches, during training, and in your field workflow whenever mixed-unit data appears. Precision shooting is a game of small margins. Clean conversion protects those margins and helps you make better decisions under pressure.