Putting Break Estimator

Enter slope percentage and putt distance to estimate break.

Putt distance (feet)

Slope grade (%)

Green speed (stimpmeter)

Estimated break —

Aim point (from hole) —

Break increases with slope, distance, and green speed. On faster greens, the ball curves more because it rolls slower. This is a simplified model — grain, moisture, and wind also affect break.

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How to Read Putting Break

Putting break depends on three factors: slope steepness, putt length, and green speed. Steeper slopes and faster greens produce more break. Longer putts break more because the ball is rolling slowly for a longer time.

This calculator provides a rough estimate. Real green reading also involves reading grain direction, identifying subtle undulations, and accounting for the ball's decelerating speed near the hole.

Putt break results from two factors: the slope of the green and the speed of the ball. A ball rolls on a curved path because gravity pulls it sideways down the slope while its forward momentum carries it toward the hole. Slower putts break more than faster putts on the same slope because gravity has more time to deflect the ball.

AimPoint method (simplified): visual slope estimation uses your feet to feel the slope. 1-2% slope = 1 cup of break for 10 feet; 3-4% = 2 cups; 5% = 3 cups per 10 feet. Green stimpmeter reading affects the multiplier — fast greens (11–13 on the Stimp) break more than slow greens (8–9) for the same slope percentage.

The fall line (the straight downhill path through the hole) divides the green into two equal halves. All putts break toward the fall line. On a sidehill putt, the ball starts parallel to the fall line and curves toward it — you must aim above the hole by the estimated break amount.

Under-reading is the most common putting error: most amateurs read half as much break as is actually present. When in doubt, play more break and focus on lag putting (getting the ball within 3 feet regardless of whether it makes the hole). Three-putts are almost always caused by poor distance control, not misread break.