Golf Tutorials

What Does Blast Golf Measure?

By Spencer Lanoue
July 24, 2025

You've clipped the small black sensor to the end of your golf club, and you know it’s collecting data, but what does Blast Golf actually measure? More importantly, how can you translate those numbers into hitting better putts and crisper iron shots? This guide breaks down the core metrics Blast tracks for both your putting stroke and your full swing, explaining what they mean and how to use them to make real, lasting improvements to your game.

How Does Blast Golf Work? A Quick Overview

Before we get into the metrics, let's briefly cover how the system operates. The Blast Golf sensor is a remarkable piece of technology that attaches to the grip of any golf club. Using highly-sensitive motion-capture technology, it analyzes your swing or stroke in three-dimensions. It then instantly sends this information via Bluetooth to the Blast Golf app on your smartphone or tablet.

The beauty of this is its simplicity. You don't have to change your routine. Just set it up, connect it, and start swinging. The app records every swing, provides audio and visual feedback, and stores your data so you can track your progress over time. Now, let’s get into the data itself and what it means for you.

Decoding Your Putting Stroke With Blast

Putting is the area where Blast Golf truly shines, offering an incredible level of detail on the mechanics of your stroke. Improving these metrics directly translates to better distance control and more holed putts. Let's look at the main measurements.

Putting Tempo: The Rhythm of Your Stroke

Tempo is the total time of your putting stroke, measured from the start of your backstroke to the moment of impact. It’s typically displayed as a ratio, like "1.8 : 1" or "2.1 : 1."

  • What does it mean? This ratio compares the duration of your backstroke to your forward stroke. A 2:1 ratio, for example, means your backstroke took twice as long as your forward stroke. Most PGA Tour players have a putting tempo between 1.8:1 and 2.2:1.
  • Why does it matter? A consistent tempo is the foundation of great distance control. When your rhythm is the same from putt to putt, your brain can more easily calibrate how far the ball will roll based on the length of your stroke. If your tempo is all over the place, every putt becomes a guess.
  • How to improve it: The goal isn't to perfectly hit a 2:1 ratio, it’s to make your personal ratio incredibly consistent. Find a tempo that feels natural and work on repeating it. A great drill is to use a metronome app on your phone. Set a beat and try to start your backstroke on one 'tick' and make impact on the next 'tick.' This trains your body to feel a consistent rhythm.

Stroke Time: The Total Duration

Separate from the tempo ratio, Stroke Time measures the total duration of your stroke in seconds. For example, your backstroke might be 0.60 seconds and your forward stroke 0.30 seconds, giving you a total Stroke Time of 0.90 seconds and a 2:1 tempo.

  • What does it mean? This is the literal clock time of your stroke. It tells you if you have a quick-and-short stroke or a long-and-smooth one.
  • Why does it matter? It's another excellent indicator of consistency. On a pressure putt, do you get quick and "jab" at the ball? Does your stroke get long and slow on lag putts? Watching your Stroke Time reveals these tendances. Knowing your baseline time for 10, 20, and 30-foot putts helps you build a repeatable, pressure-proof routine.
  • How to improve it: Practice making strokes of different lengths while trying to maintain the same Stroke Time. This sounds difficult, but it forces you to accelerate smoothly through the ball, which is a fantastic skill for distance control.

Face Rotation at Impact: The Key to Starting on Line

This metric measures how much the putter face opens during the backstroke and closes through impact. Blast shows you the degree of rotation at the halfway point of the backstroke and, most importantly, the degree of face angle (open or closed) at the moment of impact.

  • What does it mean? Every good putting stroke has some face rotation - it’s a natural consequence of the club moving on an arc. The number itself isn't as important as making sure it returns to square at impact.
  • Why does it matter? The putter face angle at impact is the single biggest factor determining a putt's starting line. If you hit a putt dead-center but the face is 1 degree open, the ball will miss from as close as 8 feet. Blast tells you precisely whether you’re consistently returning the face to square, or if you have a tendency to leave it open (pushes) or close it too soon (pulls).
  • -
  • How to improve it: The classic "gate drill" is perfect for this. Place two tees on the ground just wider than your putter head, creating a gate. Practice swinging the putter back and forth through the gate without hitting the tees. This trains your stroke path and helps you deliver a square face. Blast will confirm if you're doing it correctly, showing you a face angle at impact near 0.0 degrees.

Understanding Your Full Swing Data

While the putting feedback is incredibly detailed, Blast also provides very valuable information for your irons, woods, and driver. The focus here shifts from precision mechanics to rhythm and power generation.

Swing Tempo and Time: The DNA of Your Swing

Just like with putting, Blast measures the time of your backswing and your downswing, presenting it as a tempo ratio. For a full swing, a 3:1 ratio is considered the benchmark of efficiency seen in most professional golfers. This means the backswing is three times longer than the downswing.

  • John Rahm may have a very fast backswing (and total swing time), while Fred Couples has a much slower, more deliberate one. However, both of them maintain a tempo ratio very close to 3:1. This is the "secret sauce" of consistent ball striking.
  • Why does it matter? An inconsistent swing tempo is often the root cause of inconsistent contact. When your timing varies, whether due to pressure or fatigue, your sequence breaks down. One swing might be "armsy," the next might be a big heave from the top. A consistent tempo allows all the parts of your body to fire in the correct sequence, swing after swing.
  • How to improve it: Find your "3:1" feel. A great mental key is to say "one-two-three" in your head during your backswing and then just "one" for the downswing and impact. The goal is to make the feeling an athletic, rhythmic motion, not a mechanical series of positions.

Lie at Impact: Your Setup and Strike

For full swings, Blast can show you the lie angle of your club at impact. It tells you if the clubhead is delivered with the toe up, toe down, or relatively flat to the ground.

  • What does it mean? This is a direct reflection of your setup and how the club interacts with the turf.
  • Why does it matter? A consistent lie angle at impact is an indicator of a consistent swing path and attack angle. If you are consistently hitting shots with the toe significantly down, it could mean you're standing too far from the ball or your clubs are too flat for you. If the toe is up, you may be too close or your clubs may be too upright. This data is a fantastic starting point for a conversation with a qualified club fitter.

Swing Speed & Power Index: The Engine of Your Distance

Almost everyone wants more clubhead speed. Blast measures it accurately, but it also provides a more insightful metric: the Power Index.

  • Swing Speed: This is a straightforward measurement of how fast the clubhead is moving just before impact. More speed generally equals more distance.
  • Power Index: This unique Blast metric combines your swing speed with the efficiency of your tempo. It's calculated by converting how much energy you generate and how effectively you transfer it during your swing into a simple 0-100 score. A wild, out-of-control swing that generates high speed but has poor tempo will get a lower Power Index than a smooth, efficient swing with a slightly lower speed.
  • Why it matters: Focusing only on raw speed can lead to bad habits. The Power Index encourages you to develop an efficient swing. It rewards golfers who build speed with proper sequencing and good tempo, not just brute force. Tracking your Power Index is a fantastic way to ensure you're adding "good speed," not just "wild speed."

Putting It All Together: From Data to Better Golf

Okay, that's a lot of information. The most important thing is not to get overwhelmed. The real power of Blast Golf is its ability to help you focus.

Establish Your Baseline

Before you try to change anything, simply hit 10-15 putts or full swings and let Blast record the data. Don't' try to do anything special. This will show you your natural tendencies. Are you a 2.3:1 tempo putter? Is your full-swing tempo closer to 3.5:1? These numbers are your baseline. The initial goal is consistency, not perfection. Make your next 10 swings match your own baseline numbers.

Pick ONE Thing to Improve

After reviewing your data, find the one metric that’s the most inconsistent or farthest from the ideal benchmarks. Maybe your putting tempo varies from 1.7:1 to 2.5:1. For your next practice session, focus only on that. Use the metronome drill and ignore everything else. By simplifying your focus, you give your brain a chance to learn and adapt, which is far more effective than trying to manage five different swing thoughts at once.

Final Thoughts.

Blast Golf provides objective, actionable data on the rhythm, timing, and mechanics of your golf swing and putting stroke. It replaces guesswork with concrete numbers, allowing you to identify a specific weakness, apply a targeted drill, and see immediate feedback on whether your change is working.

Understanding this data is just the first step. Combining this technical feedback with on-course decision-making is what truly lowers scores. Knowing your data helps you train better, and tools like Caddie AI can help you apply that training in real-world situations, answering questions about club selection, strategy, or how to handle a tough lie so you can play with more confidence.

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.

Other posts you might like

How to Throw a Golf Tournament Fundraiser

Thinking about hosting a golf tournament fundraiser is the first swing, executing it successfully is what gets the ball in the hole. This guide will walk you through the entire process, step-by-step, from laying the initial groundwork months in advance to watching your happy golfers tee off. We’ll cover everything from securing sponsors and setting your budget to planning the on-course fun that makes an event unforgettable.

Read more
card link

What Is a Golf Handicap?

A golf handicap does more than just give you bragging rights (or a reason to demand strokes from your friends) - it’s the game’s great equalizer and the single best way to track your improvement. This guide breaks down what a handicap is, how the supportive math behind a handicap index a is, and exactly how you can get one for yourself. We’ll look at everything from Course Rating to Adjusted Gross Score, helping you feel confident both on the course and in the clubhouse.

Read more
card link

What Is the Compression of a Pinnacle Rush Golf Ball?

The compression of a Pinnacle Rush golf ball is one of its most defining features, engineered specifically to help a huge swath of golfers get more distance and enjoyment from their game. We'll break down exactly what its low compression means, who it's for, and how you can use that knowledge to shoot lower scores.

Read more
card link

What Spikes Fit Puma Golf Shoes?

Figuring out which spikes go into your new (or old) pair of Puma golf shoes can feel like a puzzle, but it’s much simpler than you think. The key isn't the brand of the shoe, but the type of receptacle system they use. This guide will walk you through exactly how to identify your Puma's spike system, choose the perfect replacements for your game, and change them out like a pro.

Read more
card link

How to Use the Golf Genius App

The Golf Genius app is one of the best tools for managing and participating in competitive golf events, but figuring it out for the first time can feel like reading a new set of greens. This guide cuts through the confusion and shows you exactly how to use the app as a player. We’ll cover everything from logging into your tournament and entering scores to checking the live leaderboard so you can enjoy the competition without any tech headaches.

Read more
card link

How to Not Embarrass Yourself While Golfing

Walking onto the first tee with sweaty palms, worried you’ll be a good partner to paly wtih...or even asked back again ...We’ve all been there - trust me! The real trick of feeling confortable... is about how you handle you’re ready to plsy. THIS guide explains the simple rules of the rode to show you hnow t play golf while staying calm relaxed and focused... an having much morse fun while you,',re aat it? You'll also play with confidence a dn make fiendsa while you're at i

Read more
card link
Rating

Instant advice to help you golf like a pro

Just ask a question or share a photo and Caddie gives personalized guidance for every shot - anytime, anywhere.

Get started for free
Image Descrptions