How to Measure Your Golf Swing Speed: 4 Methods Compared

There are four ways to measure your golf swing speed, and they cost between nothing and £7,788. A personal radar or launch monitor sitting on the ground behind the ball is the accurate option, and UK prices now start under £100. A booked fitting or simulator bay gives you tour-grade numbers for one session. A phone app estimates speed from video. And if you have a yardage book and twenty drives, you can estimate clubhead speed for free by dividing your average carry distance by 2.3 (Practical Golf).

That's the short answer. Which one you should use depends on whether you need a single number today or a number you'll retest every fortnight. I'm Harrison, a PGA Professional and co-founder of Strikely Performance Golf. I take players through this measurement every week, and the mistake is almost never the device. It's testing in a way that can't be repeated, then reading a change that was never there.

Key Takeaways

• Free method: average carry distance over 10 or more solid drives, divided by 2.3, gives clubhead speed to within a few mph (Practical Golf)
• Club speed is measured immediately before impact, and PGA Tour players average 115 mph against 94 mph for the average male amateur (TrackMan, 2024)
• If your device reports ball speed only, divide it by your smash factor. Tour drivers average 1.49 (TrackMan)
• The 2.3 divisor is a driver number. Applying it to a 7 iron gives you a made-up figure
• Whichever method you pick, retest the same way, same club, same conditions. The consistency matters more than the accuracy

If you're new to this topic, our swing speed training hub covers the fundamentals in one place.

What Swing Speed Actually Measures

TrackMan defines club speed as "the linear speed of the club head's geometric center just prior to first contact with the golf ball" (TrackMan, September 2024). It is not the speed of your hands, not the speed of the ball, and not how hard the swing feels.

Two numbers get confused constantly, so it's worth separating them before you measure anything:

• Club speed (or swing speed). How fast the club head is moving at impact. This is the number every swing speed chart refers to.
• Ball speed. How fast the ball leaves the face. Always higher than club speed on a solid strike.

The bridge between them is smash factor, which is ball speed divided by club speed. PGA Tour players average 1.49 with a driver (TrackMan). That relationship matters here for one practical reason: several budget devices report ball speed only. If yours does, divide ball speed by your smash factor to get club speed. A 149 mph ball speed at a tour-level 1.49 smash factor is a 100 mph swing.

Method 1: The Free Distance Formula

Cost: nothing. Accuracy: within a few mph. Best for: a first baseline.

Hit at least twenty drives, note the carry distance of each one, discard the mishits, then average ten or more solid carries and divide that average by 2.3. The result is your approximate clubhead speed in mph (Practical Golf).

Three details decide whether this works or produces nonsense:

1. Carry, not total. Carry is where the ball lands. Total includes roll, and roll varies with turf, slope and how wet the fairway is. Use total distance in this formula and your number comes out flattering and wrong.
2. A big enough sample. Twenty drives, ten good ones. One purely struck drive tells you what your ceiling is on a good day, not what you swing at.
3. It's an estimate. Practical Golf state it plainly: expect to be out by a few mph, because "driving efficiency can vary from golfer to golfer and equipment."

A sanity check on the maths, so you know what a normal answer looks like. TrackMan's average male amateur swings at 94 mph. Run that through the same formula in reverse and it implies roughly 216 yards of carry. Shot Scope's data has a 15 handicap averaging 236 yards off the tee, but that is a driving distance figure rather than carry, which is why it sits higher (Golf Monthly, citing Shot Scope, May 2026). If your calculation lands somewhere in the 85 to 100 mph band, you're in the normal range for a club golfer.

Why This Formula Breaks on Irons

Two of the most-asked questions on this topic are "what's my swing speed if I hit a driver 230 yards" and "what's my swing speed if I hit a 7 iron 150 yards". The first has an answer. The second does not, and most pages answer it anyway.

A 230 yard carry divided by 2.3 is roughly 100 mph. If your 230 yards includes roll, your real carry is shorter and your real speed is lower, so the honest answer is a range rather than a figure.

The 7 iron question is different. The 2.3 comes from the average yards per mph achieved with a driver. Irons launch higher, spin more and travel a different distance for the same clubhead speed, and we could not find a published, primary-sourced divisor for a 7 iron. So the accurate answer is no data. Measure your iron speed on a device, or don't quote a number for it.

Method 2: A Personal Radar or Launch Monitor

Cost: £99 to £7,788 in the UK. Accuracy: high, and repeatable. Best for: anyone training for speed.

This is a small Doppler radar or camera unit that sits behind or beside the ball and reads the club head directly. It's the only method on this list that gives you the same measurement conditions every session, which is what makes a training programme measurable.

The UK market splits into three tiers. These prices were read from Google Shopping listings in the UK on 18 September 2026, and prices in this category move constantly, so treat them as the shape of the market rather than today's checkout figure.

Prices from Google Shopping UK results, read 18 September 2026, lowest price shown from a named seller. Sellers at that moment included Major Golf Direct, Amazon.co.uk, Scottsdale Golf, GolfClubs4Cash, GolfBays, Golf Sim Solutions, Voice Caddie Europe, OpenGolfer, Clubhouse Golf and Garmin UK. The same device often showed at very different prices across sellers: the original SkyTrak ranged from £495.00 to £995.00.

For measuring swing speed specifically, the entry tier is enough. Our budget launch monitor guide compares the units in that tier, with dated UK prices and sellers. The extra money in the mid and premium tiers buys spin, launch angle and simulation, none of which change the club speed reading you came for. If your only goal is a repeatable speed number to train against, spending £1,500 instead of £150 buys you accuracy you won't use.

One thing to check before you buy: whether the unit reports club speed or ball speed only. Some budget devices give ball speed and let you infer the rest. That's usable via the smash factor conversion above, but it's a conversion, not a measurement, and it will move around with strike quality.

Method 3: A Fitting or Simulator Session

Cost: typically a booked session fee. Accuracy: highest available. Best for: one accurate baseline.

Any club fitting or indoor simulator bay runs a premium launch monitor. An hour in a bay gives you a club speed figure measured on the same class of equipment that produced the tour benchmarks, along with spin, launch and strike data you can't get any other way.

The limitation is frequency. Speed training is measured in fortnightly retests over six to twelve weeks, and booking a bay every fortnight costs more than buying an entry-level radar outright. Use a fitting for the accurate starting number and the equipment check. Use something you own for the tracking.

Method 4: A Phone App

Cost: free to low. Accuracy: unverified. Best for: curiosity, not training.

Swing speed apps use the phone's camera to record the swing and estimate club head speed from the video. They're the cheapest option after the distance formula and by far the most convenient.

Here is the honest position, and it's the one most articles on this topic skip. We could not find published, independent accuracy testing for any consumer swing speed app measured against a launch monitor. That doesn't mean they're wrong. It means nobody has shown how close they are, and a speed figure you can't trust to within a couple of mph is useless for tracking a training programme, where the whole gain you're looking for over six weeks might be 5 mph.

Use an app to satisfy curiosity. Don't use one to decide whether your training is working.

How to Test So the Number Means Something

Accuracy is the smaller half of this. Repeatability is the larger half, and it's free.

• Same club, every time. Speed testing means driver unless you have a specific reason otherwise.
• Same warm-up. Cold swings read low. Fifteen minutes of hitting before the measured swings, every session.
• Same ball and surface. Range balls fly differently to premium balls. Pick one and stay with it.
• Ten swings, take the average. Not your best one. Your best swing is a story, your average is your speed.
• Same point in the session. Speed drops as you fatigue, so measuring at the end of two hundred balls gives a different answer to measuring at the start.
• Retest every two weeks. Weekly is noise. Monthly is too slow to correct a programme that isn't working.

Every 1 mph of club speed is worth up to 3 yards of driver distance (TrackMan, 2024), which is exactly why the testing protocol matters. A sloppy protocol swings your reading by more than the gain you're trying to detect.

Once You Have the Number

Two things to do with it.

First, find out where it sits. Our golf swing speed chart has verified averages by playing level, age and handicap, sourced from TrackMan and the Titleist Performance Institute, so you can see your bracket and your percentile inside it rather than guessing.

Second, if you want the number to go up, how to increase golf swing speed covers the four methods that move it: overspeed training, strength work, sequencing and setup. Take your baseline first. A speed programme with no starting number gives you no way to know whether it worked, which is the most common way golfers waste six weeks of training.

A Note on Our Own Launch Monitor

We sell one. The SPG Portable Launch Monitor is £149.99, which puts it in the entry tier above. It reads club speed, ball speed, smash factor, carry and total distance, with range and on-course modes, a backlit LCD, USB-C charging and a 12-month warranty. We also sell it together with our speed trainer as the Speed Training & Launch Monitor Bundle.

We're saying that here rather than pretending this article was written by a neutral party. We have no independent accuracy testing to publish for it, which is why the buying guidance above points at the entry tier generally rather than at us. Any of the units listed above will do everything this guide asks of it.

FAQ

Can my phone measure my swing speed?

It can estimate it. Swing speed apps record your swing with the phone's camera and calculate club head speed from the video. What no app publishes is independent accuracy testing against a launch monitor, so you don't know whether the figure is within 2 mph or 10 mph. That's fine for curiosity and not good enough for tracking a training programme where a successful six weeks might add 5 mph.

What is my swing speed if I hit a driver 230 yards?

Roughly 100 mph, if that 230 yards is carry distance. Divide average carry by 2.3 (Practical Golf). If your 230 includes roll, your carry is shorter and your actual speed is lower, so measure carry rather than total before running the sum. Expect the answer to be accurate to within a few mph either way.

What is my swing speed if I hit a 7 iron 150 yards?

No reliable published figure exists for this. The divide-by-2.3 method is derived from driver efficiency, and irons launch and spin differently enough that the same divisor doesn't transfer. Pages that give you a 7 iron number from distance alone are estimating from an unsourced conversion. Measure iron speed on a device instead.

Is there a free way to measure golf swing speed?

Yes. Average your carry distance over ten or more solid drives and divide by 2.3 (Practical Golf). It costs nothing beyond a way to read carry distance, and it lands within a few mph. It's the right first step before spending money on a device.

What's the cheapest device that measures swing speed in the UK?

Entry-level personal launch monitors and radars started under £100 in UK listings read on 18 September 2026, led by the HEAD Golf Portable at £99.00, with several established options between £149 and £200. For measuring club speed specifically, the entry tier does the job. The extra spend in higher tiers buys spin, launch angle and simulation rather than a better speed reading.

How often should I retest my swing speed?

Every two weeks while you're on a speed programme. Weekly readings mostly capture how you slept and how warm you are. Monthly leaves you too long on a programme that isn't working. Retest the same way each time: same club, same warm-up, same ball, average of ten swings.

The Short Version

Start free. Twenty drives, average the ten good carries, divide by 2.3, and you have a baseline within a few mph. If you're training for speed, buy an entry-level radar and retest every fortnight, because a repeatable number beats an accurate one you take twice a year. Book a fitting when you want the equipment check as well as the reading. Treat app figures as interesting rather than true. Then take your number to the swing speed chart to see where you sit, and to how to increase golf swing speed to move it.