Darts Three-Dart Average Calculator
The three-dart average is the single most important number in darts — it is how every player from beginner to world champion is rated. This calculator turns your total points scored and total darts thrown into a three-dart average and a points-per-dart figure.
How it works
The average normalises your scoring to a per-visit (three-dart) basis:
Points per dart = Total points / Total darts
Three-dart average = Points per dart * 3
= (Total points / Total darts) * 3
In a 501 leg, the total points scored is always 501 (you must reduce exactly to zero), so a 501 leg finished in 18 darts gives 501 / 18 * 3 = 83.5. For multi-leg sessions, sum points and darts across all legs first.
Example and notes
A player who scores 1503 points across three 501 legs using a total of 45 darts has a points-per-dart of 1503 / 45 = 33.4, giving a three-dart average of 33.4 * 3 = 100.2. A perfect nine-dart 501 leg yields 501 / 9 * 3 = 167.0, the maximum possible single-leg average.
Tips: always include checkout darts in the total, since that is how official averages are computed. Tracking your average over many sessions is the cleanest way to measure improvement — focus on raising your scoring power (more treble-20s) and your checkout efficiency (fewer wasted darts on the double) to push the number up.