Wind Holdover Calculator

Enter your distance, wind speed and angle, ballistic coefficient, and muzzle velocity to estimate wind drift and the correction needed in MOA or milliradians using a lag-time ballistic model.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Enter the Distance to Target
Input the range to your target in yards. Long-range shooting often involves distances from 300 to over 1000 yards.
2
Provide the Wind Speed
Specify the observed or estimated wind speed in miles per hour. This is the speed of the wind blowing across the bullet's path.
3
Input the Wind Angle
Enter the angle of the wind relative to your line of fire in degrees. A 90° angle represents a full crosswind, while 0° or 180° means no crosswind effect.
4
Define the Ballistic Coefficient (G1)
Provide the G1 ballistic coefficient (BC) from your bullet manufacturer. This value indicates how aerodynamically efficient the bullet is, with higher numbers meaning less drag.
5
Enter the Muzzle Velocity
Input the velocity of your bullet at the muzzle in feet per second. This is a critical factor for determining time of flight and wind interaction.
6
Review your results
The calculator will display the estimated wind drift in inches, MOA, and MRAD, along with time of flight and crosswind component.

Example Calculation

A competitive shooter in 2025 needs to compensate for wind when engaging a target 600 yards away. The observed wind speed is 10 mph at a 90° angle to the shot, using a bullet with a G1 ballistic coefficient of 0.5 and a muzzle velocity of 2,800 fps.

Distance to Target (yd)

600

Wind Speed (mph)

Wind Angle (°)

Ballistic Coefficient (G1)

0.5

Muzzle Velocity (fps)

2,800

Results

72.8 inches

Tips

Master Wind Reading Techniques

Wind speed and angle are dynamic. Learn to read mirage, flags, and vegetation at various points along the bullet's path. A slight error in wind estimation can lead to significant misses at long range; for example, at 600 yards, a 1 mph wind error can shift impact by 7-8 inches.

Understand Ballistic Coefficient Limitations

The G1 ballistic coefficient is an approximation. For extreme long-range shooting, consider using G7 BCs for boat-tail bullets or custom drag models if available, as they more accurately model bullet behavior at longer distances and varying velocities.

Practice with a Spotter

Working with a skilled spotter who can call wind changes and observe bullet trace (vapor trail) and impacts is invaluable. This feedback loop helps you refine your wind calls and understand how corrections translate into actual bullet path, improving your precision at the range.

Mastering Wind Holdover for Precision Shooting Accuracy

The Wind Holdover Calculator is an indispensable tool for long-range shooters, hunters, and competitive marksmen aiming for precision. It quantifies the exact wind drift a bullet will experience, providing crucial data in inches, Minutes of Angle (MOA), and Milliradians (MRAD). This calculation is vital for making accurate hold-off estimates, ensuring that a 10 mph crosswind at 600 yards, which can push a bullet over 70 inches off target, doesn't result in a missed shot. Mastering wind compensation is a key skill for success in challenging shooting scenarios.

Why Wind Compensation is Critical for Marksmanship

For precision shooting, wind compensation is not merely an adjustment—it's a fundamental aspect of marksmanship that separates casual shooters from experts. Even a light breeze can cause significant bullet deflection over long distances, making accurate hits impossible without correction. Understanding how wind speed, direction, bullet ballistics, and target distance interact allows a shooter to predict and counteract these forces, ensuring the bullet consistently reaches the intended point of impact. This foresight is critical for ethical hunting, competitive success, and tactical applications where every shot counts.

The Ballistic Physics of Wind Drift

Calculating wind drift involves understanding how a bullet's flight path is affected by aerodynamic drag and lateral wind forces. The key to wind drift is the "lag time"—the difference between a bullet's actual time of flight and its theoretical time of flight in a vacuum. The longer the bullet is in the air, the more time the wind has to act upon it.

The simplified logic involves:

Calculate Crosswind Component: Crosswind Speed = Wind Speed × sin(Wind Angle)
Estimate Time of Flight (TOF): This considers the bullet's muzzle velocity and ballistic coefficient (BC) to model velocity decay due to drag.
Determine Lag Time: Lag Time = Actual TOF - Vacuum TOF
Calculate Wind Drift: Wind Drift = Crosswind Speed × Lag Time

The result is then converted into angular units like MOA or MRAD for scope adjustments.

💡 To improve your overall shooting consistency and endurance, consider tracking your physical performance. Our Stride Length Calculator, while for running, highlights the importance of consistent measurement in athletic pursuits.

Calculating Bullet Drift: A Long-Range Scenario

Consider a marksman preparing for a long-range competition in 2025, needing to hit a target 600 yards away. The wind is blowing at 10 mph directly across the range (90° angle). The shooter is using a bullet with a G1 ballistic coefficient of 0.5 and a muzzle velocity of 2,800 feet per second (fps).

Here's how the wind drift is determined:

Convert Distance to Feet: 600 yards × 3 ft/yd = 1800 feet.
Calculate Crosswind Component: With a 90° wind angle, the full 10 mph wind is a crosswind. Convert to fps: 10 mph × 1.467 fps/mph ≈ 14.67 fps.
Estimate Time of Flight (TOF) and Lag Time: Using the ballistic coefficient and muzzle velocity, the calculator determines an actual TOF of approximately 1.056 seconds and a vacuum TOF of 0.643 seconds. The resulting lag time is 0.413 seconds.
Calculate Wind Drift in Inches: 14.67 fps (Crosswind) × 0.413 s (Lag Time) × 12 in/ft ≈ 72.8 inches.
Convert to MOA and MRAD: 72.8 inches at 600 yards converts to approximately 11.60 MOA and 3.37 MRAD.

For this scenario, the bullet will drift approximately 72.8 inches, requiring a hold of 11.60 MOA or 3.37 MRAD.

💡 To optimize your performance in sports that require precise control over distance and time, like triathlon, our Triathlon Finish Time Calculator helps analyze how various factors contribute to overall results.

Ballistics and Precision Shooting for Fitness Enthusiasts

Understanding wind holdover is a critical skill in competitive long-range shooting, which demands intense focus, exceptional core strength, and physical stability. This discipline challenges participants to maintain a steady shooting position, often under pressure, while making precise adjustments for environmental factors like wind. The mental fitness aspects, such as breath control, visualization, and rapid calculation of ballistics data, are as crucial as physical endurance. Consistent practice with tools like this calculator and real-world range time can significantly improve scores in disciplines like the Precision Rifle Series (PRS), where wind compensation is paramount. For example, a 10 mph crosswind at 600 yards, causing over 6 feet of drift, underscores the need for both physical steadiness and accurate data application.

Interpreting Wind Drift for Long-Range Marksmen

Experienced long-range marksmen interpret wind drift calculations as a crucial input for their firing solution. They first identify the "full value" crosswind component, which is the effective wind speed perpendicular to the bullet's path. This value is then translated into a "windage" adjustment, typically in Minutes of Angle (MOA) or Milliradians (MRAD), which they apply to their scope turrets or use as a hold-off on their reticle. Competitive shooters often keep detailed "dope" (data on previous engagements) charts, recording these corrections for various conditions and ranges. For instance, a calculated 11.6 MOA of wind drift at 600 yards means they must aim 11.6 MOA into the wind. It's understood that a small 1-inch error at 100 yards compounds into a 6-inch error at 600 yards, emphasizing the absolute necessity of precise wind calls and consistent application of calculated adjustments.

Frequently Asked Questions

What is wind holdover in long-range shooting?

Wind holdover, also known as windage, refers to the adjustment a shooter makes to their aiming point to compensate for the effect of wind pushing the bullet sideways. Because wind causes a bullet to drift horizontally from its intended path, shooters must aim 'into' the wind by a calculated amount (either by holding off the target or adjusting scope turrets) to ensure the bullet impacts the target precisely. This compensation is crucial for accuracy, especially at extended distances.

How does ballistic coefficient affect wind drift?

The ballistic coefficient (BC) significantly affects wind drift by quantifying a bullet's ability to overcome air resistance. A higher BC indicates a more aerodynamically efficient bullet that retains its velocity better and is less affected by both gravity and wind. Bullets with higher BCs will experience less wind drift over a given distance compared to lower BC bullets, requiring smaller windage corrections for precision shooting.

Why is time of flight (TOF) important for wind holdover?

Time of flight (TOF) is crucial for wind holdover because the longer a bullet is in the air, the more time the wind has to act upon it, causing greater drift. Even if two bullets start with the same muzzle velocity, differences in their ballistic coefficients or distances to target will result in different TOFs, directly influencing the amount of wind drift experienced and thus the necessary holdover adjustment. A longer TOF equates to increased wind sensitivity.

What is the difference between MOA and MRAD for wind adjustments?

MOA (Minutes of Angle) and MRAD (Milliradians or Mils) are angular units used to quantify adjustments on rifle scopes for windage and elevation. MOA typically represents approximately 1 inch per 100 yards (1.047 inches, precisely), while 1 MRAD represents 3.6 inches per 100 yards. Both are equally precise; the choice depends on the shooter's preference and scope's reticle/turret system. Understanding the conversion is vital for accurate wind calls.