Ten-Pin Bowling Average & Handicap Calculator
By Santaji GadepatilinUpdated October 27, 2026
2,610
calculated
calculated
Type in any field to change it. Press × on a value to calculate that field instead.
How to use this calculator
Enter your total pins, games played, the league’s basis and percentage. Your average and handicap are calculated.
Example
2,610 pins in 15 games → average 174. With a 220 basis at 90%: (220 − 174) × 0.9 = 41.4 → handicap 41.
Frequently asked questions
How is a bowling handicap calculated?
Handicap = (basis − average) × percentage, rounded down. For example (220 − 174) × 90% = 41.
Why are fractions dropped?
Most leagues truncate both the average and the handicap to whole pins.
What basis and percentage are common?
200–230 basis with 80–100% are common; check your league rules.