Your checkout percentage measures how often you finish a leg when you get a chance. In darts, a checkout attempt means you threw at a double with a score that could win the leg. If you hit the double, you won the leg. If you missed, the chance passed. This calculator turns your attempts and your legs won into a single percentage that shows how clinical you are under pressure.
The math is simple. Divide the number of legs you won by the number of checkout attempts you had, then multiply by one hundred. If you had twenty attempts and won eight legs, your checkout percentage is forty percent. The tool also shows how many attempts you missed, so you can see both sides of the record at once.
To use the tool, enter your total checkout attempts first. Then enter how many legs you won with those attempts. Press Calculate. You will see your checkout percentage and your missed checkouts. Be honest with the counts: an attempt only counts when you actually threw at a double that could finish the leg, not every visit near the end of a leg.
Here is an example. You played a match, had twenty darts at doubles that could win legs, and took eight of them. Your checkout percentage is forty percent, and you missed twelve chances. That number tells a story on its own: you reached finishing positions often, but you converted fewer than half of them, so finishing practice would help more than scoring practice.
What is a good checkout percentage? Club players often convert between twenty and forty percent of their chances. Strong league players convert around forty to fifty percent. Professionals convert far more, often above fifty percent in televised matches, because they also set up cleaner finishes. Your number depends on which doubles you leave yourself and how much pressure you feel.
The double you leave matters as much as your throwing. Double sixteen and double twenty are the most practiced finishes in the game, and most players convert them best. Double eighteen, double ten, and double eight also feel natural to many players. Awkward doubles like double three or double one drag any player’s percentage down, so good setup play is part of good finishing.
If your percentage is low, practice finishes in short, focused sets. Throw twenty attempts at double sixteen from a set score, record your hits, and repeat the next day. Then do the same for double twenty and double ten. Practicing a finish you never leave in matches wastes time, so track which doubles you actually face and practice those first.
Pressure changes finishing more than it changes scoring. In practice, your arm is loose and the double looks big. In a match, the same double can feel tiny. The fix is to practice with consequences: play legs against a friend, or set yourself a target such as hitting three doubles in a row before you stop. Pressure practice closes the gap between your practice percentage and your match percentage.
One common mistake is counting every late-leg visit as an attempt. If you were on 170 and threw at treble twenty, that was a setup visit, not a checkout attempt. Only count visits where a double would have ended the leg. Clean counts give a clean percentage, and a clean percentage tells you whether to work on setup play or on the doubles themselves.
Track your checkout percentage across a month of matches, not a single night. One match can swing it by twenty points. A longer record shows your real level and whether your practice is working. When your setup improves, your percentage often rises even before your doubling improves, because you start facing doubles you actually like.
This free calculator runs in your browser with no sign-up. After each match, count your attempts and your legs won, enter them here, and keep a short log. Checkout percentage turns the most stressful part of darts into a number you can improve, one double at a time.
Version en espanol: Calculadora de Porcentaje de Cierre de Dardos – Desde Tu Planilla de Partido