Golf Tutorials

How to Find Swing Speed in Golf

By Spencer Lanoue
July 24, 2025

Knowing your golf swing speed is fundamental to hitting the ball farther and choosing the right equipment, but finding that number often feels out of reach. It doesn't have to be. This guide will walk you through the most accurate high-tech methods, some clever low-tech estimations, and what to do with that information once you have it to genuinely improve your game.

What is Golf Swing Speed, and Why Does It Matter?

In simple terms, swing speed is the velocity of your clubhead at the precise moment it makes contact with the golf ball. Think of it as the engine of your golf shot. While factors like solid contact and launch angle are very important, swing speed is the primary source of power and sets the absolute ceiling on how far you can possibly hit the ball. The faster you can swing the club, the more energy you transfer to the ball, and the greater your potential distance.

But it's not just about bragging rights for bombing drives. Your swing speed is a critical piece of data that influences major decisions about your equipment. The most important of these is your shaft flex. Playing a shaft that's too stiff for your swing speed can lead to a low, weak shot that leaks to the right (for a right-handed golfer). Conversely, using a shaft that's too flexible can result in high, ballooning shots that often hook to the left. Knowing your speed helps you get into the right ballpark, allowing your equipment to work for you, not against you.

The Gold Standard: Using a Launch Monitor

The most direct and accurate way to measure your swing speed is with a launch monitor. These devices were once exclusive to PGA Tour pros and high-end fitting studios, but advancements in technology have made them surprisingly accessible to the everyday golfer.

Launch monitors use high-speed cameras or Doppler radar to track the club and ball through impact, delivering a treasure trove of precise data, including your clubhead speed.

High-End Professional Units

You’ll find devices like the Foresight GCQuad or TrackMan in professional fitting bays and luxury golf simulators. They are the pinnacle of accuracy and provide tour-level data. If you book a club fitting at a reputable shop or spend time at an indoor golf facility, you’ll almost certainly be hitting on one of these machines. This is a fantastic way to get perfectly accurate numbers without buying the unit yourself.

Personal Launch Monitors

This is where the game has really changed for amateur golfers. Companies like Bushnell, SkyTrak, Rapsodo, and Garmin now offer personal launch monitors that connect to your smartphone or tablet. They offer incredible value and are more than accurate enough for the vast majority of players looking to understand their numbers.

How to Use a Personal Launch Monitor:

  1. Set Up: Position the device at a driving range or into a practice net at home. Every unit has a specific distance it needs to be placed behind the ball (e.g., 6-8 feet), so read the quick-start guide carefully.
  2. Connect: Pair the launch monitor with its corresponding app on your phone or tablet via Bluetooth or Wi-Fi.
  3. Calibrate: Align the device with your target line. Most apps have a very simple camera-based alignment tool to make this easy.
  4. Swing Away: Start hitting shots. The app will display your swing speed, ball speed, carry distance, and other metrics instantly. To get a true sense of your speed, make sure you're properly warmed up and hitting 10-15 shots with your driver. Don't just take the fastest one, look for a consistent average of your good swings.

Low-Tech Estimations: Finding Your Speed Without a Monitor

Don't have access to a launch monitor? No problem. While you won't get a perfectly precise reading, you can get a very solid estimate using some simple methods.

Method 1: The Carry Distance Formula

This is a widely used rule of thumb in the club-fitting world and it’s surprisingly effective. It relies on the relationship between how fast you swing and how far the ball travels through the air (carry distance, not total distance including roll).

The calculation is simple:

(Your Average Driver Carry Distance in Yards) / 2.3 = Estimated Swing Speed in MPH

For example, if you stand on the range and find that your solid drives consistently fly about 230 yards before they land, the math would be:

230 / 2.3 = 100 MPH

Your estimated driver swing speed would be around 100 mph. Is it perfect? No. Factors like the quality of your strike, the spin rate, and launch angle will influence the efficiency of your speed. But as a baseline to guide your equipment choices, it's an excellent starting point.

Method 2: Shaft Flex Feedback

You can also use your current equipment to make an educated guess. The flex of your golf shaft is designed to match a certain speed range. If you have a significant mismatch, your ball flight will often tell the story.

  • Struggling with a Regular (R-Flex) Shaft? If you use a regular flex shaft and your common miss is a low slice or a shot that just won't get airborne properly, it’s possible your swing speed is too slow for the shaft. Your speed is likely below 90 mph and you might benefit from a Senior (A-Flex) or even Ladies (L-Flex) shaft.
  • Ballooning a Stiff (S-Flex) Shaft? If you play a stiff shaft and your shots tend to fly very high with a hard-to-control hook, you may actually be swinging faster than that shaft is designed for. Your speed could be creeping above 105 mph, and an Extra Stiff (X-Flex) shaft might straighten out your flight.

This method is more about diagnostics than finding a hard number, but it helps you understand if you're in the right category.

What Do the Numbers Mean? A Swing Speed & Shaft Flex Guide

Once you have an idea of your driver swing speed, you can use it to select the right shaft flex. This chart provides a strong general guideline. Remember, a professional fitting is always the best way to dial in your exact needs, but this will get you on the right track.

Swing Speed (MPH with Driver) Common Player Profile Recommended Shaft Flex Below 75 MPH Beginners, juniors, many senior players, or those with very smooth tempos. Ladies (L-Flex) or Senior (A-Flex) 75 - 90 MPH The majority of average male amateur golfers fall into this range. Regular (R-Flex) 90 - 105 MPH Faster amateurs, lower-handicap players, and many athletic golfers. Stiff (S-Flex) 105 MPH and Above Highly skilled amateurs, collegiate players, and professionals. Extra Stiff (X-Flex) or heavier

How to Increase Your Swing Speed

Finding your number is the first step, improving it is the next. If you feel like you aren't maximizing your speed潛力, focus on these three areas.

1. Improve Your Swing Sequence

Raw power is one thing, but efficient power is better. The fastest swings aren't made with just the arms and hands. Speed is generated from the ground up: your hips lead the downswing, your torso unwinds, and the arms and club are the last things to deliver that stored energy. Work with a coach to improve your kinematic sequence. Focusing on a proper weight shift and letting your body - not your arms - drive the downswing will help you create effortless speed.

2. Boost Your Golf Fitness

Modern golfers are athletes. You don't have to look like Bryson DeChambeau, but improving your strength and mobility will pay huge dividends. Focus on:

  • Core Strength: Planks, Russian twists, and medicine ball throws will stabilize your swing and allow for a more forceful rotation.
  • Mobility: Better hip and thoracic (upper back) spine mobility allows for a deeper and more powerful turn away from the ball.
  • Explosive Power: Exercises like box jumps or kettlebell swings can train your muscles to fire more quickly, which translates directly to the golf swing.

3. Try Overspeed Training

This is a popular technique used by players at every level. The idea is to swing a club that is lighter than your regular driver as fast as you can. This trains your brain and central nervous system to move your body faster than it’s used to. When you then pick up your actual driver, your body "remembers" that faster motion, and you're able to swing your normal club at a higher speed. Training aids like SuperSpeed Golf are designed specifically for this, but even just turning your driver upside down and swinging the grip-end can have a similar effect.

Final Thoughts

Finding your swing speed, whether through a launch monitor or a smart estimation, removes the guesswork from your game. It empowers you to choose the right clubs and provides a clear metric for tracking your improvement as you work on your technique and fitness.

Knowing your numbers is the first half of the battle, using them to make better decisions on the course is the second. For that part, I created Caddie AI to act as a 24/7 on-demand golf expert. Once you know how far you hit each club, you can get instant, expert advice on club selection and strategy for any shot you face, helping you turn that newfound data into real confidence and lower scores.

Spencer has been playing golf since he was a kid and has spent a lifetime chasing improvement. With over a decade of experience building successful tech products, he combined his love for golf and startups to create Caddie AI - the world's best AI golf app. Giving everyone an expert level coach in your pocket, available 24/7. His mission is simple: make world-class golf advice accessible to everyone, anytime.

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