Swing weight is a measure of how the weight of a golf club is distributed and how "heavy" it feels to a golfer during the swing. It is not the same as the total static weight of the club. Two clubs can have the exact same total weight but different swing weights if the balance point is shifted toward the head or the grip.
The standard measurement uses a 14-inch fulcrum (pivot point) from the butt end of the club. This calculator uses the Lorythmic scale, which is the industry standard for manufacturers like Titleist, TaylorMade, and Ping.
How to Measure Your Club for Calculation
To use this calculator, you need two specific measurements:
Total Weight: Use a digital scale to find the weight of the entire club (head, shaft, and grip) in grams.
Balance Point: Find the point where the club balances perfectly on a thin edge (like a ruler or a finger). Measure the distance from the very end of the grip (the butt end) to this balance point in inches.
The Swing Weight Scale Explained
Swing weight is expressed with a letter (A-G) and a number (0-9). The most common range for men's clubs is D0 to D5, while women's clubs typically fall between C5 and C9.
Range
Typical User
Feel Description
C0 – C9
Ladies / Seniors
Light head feel, easier to swing fast.
D0 – D2
Standard Men's
Balanced feel for average swing speeds.
D3 – D6
Tour Professionals
Heavier head feel, provides more feedback.
Calculation Example
If you have a driver that weighs 310 grams and has a balance point 32 inches from the grip end:
Convert weight to ounces: 310 / 28.35 = 10.93 oz.
Calculate torque at the 14-inch pivot: 10.93 * (32 – 14) = 196.74 oz-in.
Map to scale: 196.74 oz-in correlates approximately to a C0.4 swing weight.
Why Swing Weight Matters
If your swing weight is too light, you may lose track of the clubhead position during your backswing, leading to inconsistent strikes. If it is too heavy, you might struggle to square the face at impact or experience fatigue. Adjusting swing weight is often done using lead tape on the clubhead (to increase it) or lighter grips (to increase it) or heavier grips (to decrease it).
function calculateSwingWeight() {
var weight = parseFloat(document.getElementById("totalWeight").value);
var bp = parseFloat(document.getElementById("balancePoint").value);
var resultDiv = document.getElementById("resultArea");
var swDisplay = document.getElementById("swResult");
var torqueDisplay = document.getElementById("swTorque");
if (isNaN(weight) || isNaN(bp) || weight <= 0 || bp <= 14) {
alert("Please enter valid positive numbers. Note: Balance point must be greater than 14 inches.");
return;
}
// Convert grams to ounces
var weightOz = weight / 28.3495;
// Calculate Torque (inch-ounces) relative to 14-inch pivot
var torque = weightOz * (bp – 14);
// Mapping to Lorythmic Scale
// D0 is defined as 213.5 oz-in
// Each swing weight point is 1.75 oz-in
// A0 starts at 161.0 oz-in
var baseTorque = 161.0; // A0
var totalPoints = (torque – baseTorque) / 1.75;
var letters = ["A", "B", "C", "D", "E", "F", "G"];
var letterIndex = Math.floor(totalPoints / 10);
var numericPart = Math.round((totalPoints % 10) * 10) / 10;
if (letterIndex = letters.length) {
swDisplay.innerHTML = "Above G9";
} else {
var finalLetter = letters[letterIndex];
swDisplay.innerHTML = finalLetter + numericPart.toFixed(1);
}
torqueDisplay.innerHTML = "Torque: " + torque.toFixed(2) + " oz-in";
resultDiv.style.display = "block";
}