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Estimate golf club carry distance from swing speed and club loft. Map driver through wedge distances for bag gapping and on-course club selection.
Calculate golf round statistics including gross score, net score, stableford points, and fairways hit. Track scoring averages and handicap posting.
Calculate USGA/WHS golf handicap index from score differentials. Enter recent round scores, course rating, and slope to estimate your official handicap.
Release a ball from the Stimpmeter notch on a level green section. Measure distance in feet from release point to where the ball stops. Take readings on flat areas, not slopes.
Roll distance (ft) = measured distance from Stimpmeter releaseRoll three balls in each direction (with and against typical grain/slope bias) and average each set. The overall stimp is the mean of both directional averages.
Stimp = (Avg uphill rolls + Avg downhill rolls) ÷ 2Low standard deviation across six or more rolls indicates uniform green surface. Variation above 0.5 ft between rolls suggests inconsistent mowing, moisture, or topdressing.
Consistency = 1 − (StdDev ÷ Mean)Updated: July 2026
Superintendent measures morning stimp at 10.2 ft uphill and 10.8 ft downhill for 10.5 average — on target for member play before tournament prep increases speed.
Competition committees target 11–12 ft on championship greens. Measure multiple greens to ensure consistent speed across the course, not just the practice green.
Practice greens reading 13+ ft require adjustment from home course 9 ft speeds. Knowing the stimp helps calibrate lag putting distance before competitive rounds.
Green speed is measured with a Stimpmeter — the distance in feet a ball rolls on a flat section of green from a standard release point. Enter multiple roll measurements from opposite directions to calculate average stimp rating and assess consistency for play or maintenance targets.