Matching Golf Clubs by Swingweight: All clubs are swingweighted to the same measurement.

• Swingweight is a measurement of how a club "feels" ... or ... how a club is "balanced". The goal is to have all clubs in the set feel the same when you swing them. This is achieved by making sure the swingweight is uniform throughout the set.
• Swingweight is a measurement of how a club feels when you swing it. It takes into account factors such as, the distance from the groundline to the bottom of the hosel bore, club length, grip weight, clubhead weight, clubhead center of gravity, shaft weight, shaft balance point, shaft flex & torque to achieve a measurement that can be applied across an entire set of golf clubs... a traditional set of irons (or woods) is built to match a certain swingweight throughout the set: using an age-old formula: head-weight increases by an identical amount as each club in the set gets shorter by an identical amount. Wedges are usually heavier.
• The majority of the golf club companies (Nike, Callaway, Taylor Made, Titleist, Adams, Ping, Cleveland, Yonex, Srixon, Cobra, Mizuno and others) swingweight nearly all their men’s clubs in the low to mid 'D' range. Ladies' clubs may be available in the high 'C' range and the low 'D' range. Wedges are usually heavier.

Matching Golf Clubs by MOI: All clubs are swingweighted to different measurements.

• MOI is the term applied to a clubhead's resistance to twisting. On a slight off-center hit, a club head with a higher MOI will twist less, ensuring more consistent distance and straighter ball flight, verses lower MOI designs. MOI matching results in a set of clubs with a constant MOI but progressive swingweights, which increase as the clubs get shorter.
• Compared with a traditional swingweight-matched set, a MOI-matched set may feel different in the short or long irons, or it may be hard to notice any difference.
  • If the swingweight of both sets' long irons are similar, then the short irons in the MOI-matched set will be heavier than those in the swingweight-matched set.
  • If the swingweight of both sets' short irons are similar, then the long irons in the MOI-matched set will be lighter than those in the swingweight-matched set.
• Whether or not a MOI machine is used... close enough MOI approximation will work by using the Clubmakers Calculator, Copyright © Douglas J Marsh. A new set of clubs can be plotted by first measuring the current favorite club's swingweight. Then enter data to match the new set of clubs to the current favorite club's swingweight. The program accurately pre-determines the parameters needed to achieve the desired swingweight or MOI for each club. This calculator toggles between the swingweight calculator and MOI calculator allowing the user to match a set by swingweight or MOI.

Swingweight Scale