Why does my score start at 501?

501 is the standard starting score for a singles leg in professional and league darts. Each player throws to reduce 501 to exactly zero, and most formats require the final dart to land in a double (double-out).

What counts as a bust?

A visit busts if it would take your remaining score below zero, or leave you on exactly one, because one cannot be finished with a double. On a bust your score returns to what it was at the start of that visit.

What are bogey numbers?

Bogey numbers are scores from which no valid three-dart double-out finish exists: 169, 168, 166, 165, 163, 162 and 159. The tool flags these so you know to set up a different finish.

Does this verify my double-out?

It tracks the arithmetic of the leg and suggests a checkout combination, but it cannot see which segment your dart hit. You still need to land the called double to legally finish the leg.

Can I undo a mistake?

Yes. The Undo button removes the most recent visit and restores the previous remaining total, so a mis-typed score is easy to correct without resetting the whole leg.

What is the Darts Leg Score Tracker?

Track a darts leg from 501 down: enter each visit's score, the tool deducts it, flags bust throws, keeps a running 3-dart average, and shows the standard checkout combination once you reach finishing range. It runs free in your browser on Gera Tools, with nothing uploaded.

Darts Leg Score Tracker

Name: Darts Leg Score Tracker
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

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A leg of darts is simple arithmetic under pressure: start at 501 and subtract every visit until you reach exactly zero on a double. This tracker keeps that running total for you, flags bust throws, and tells you the standard checkout once you are in finishing range.

How it works

Each visit (up to three darts, scoring 0 to 180) is subtracted from your remaining score:

remaining = 501 − sum of all valid visits

A visit is a bust — and is not deducted — when:

remaining − visit < 0      (overthrow)
remaining − visit == 1     (cannot finish on 1)

When your remaining score is 170 or less and not a bogey number, the tool looks up the conventional three-dart checkout (for example T20 T20 Bull for 170, or D20 for 40) from the standard finishing table used by professional players.

Tips and notes

The seven bogey numbers — 169, 168, 166, 165, 163, 162 and 159 — have no three-dart finish, so aim to leave a “good” number such as 170, 160, 100, 40 or 32. The tool also reports your three-dart average, the headline figure used to compare players: a club player sits around 45-60, while top professionals push past 100. Use Undo to fix a mistyped visit rather than resetting the leg.

Reading the running average as you play

Because the tracker computes your three-dart average after every visit, you can watch it evolve in real time. Early in a 501 leg, a single high visit swings the average dramatically. By halfway through the leg it stabilises, and the final few visits — especially how many darts you take on the checkout — have the biggest influence on whether you finish above or below your scoring average.

A visit of 100 (three treble-20s would give 180, but 100 is a solid scoring visit) contributes (100 / 3) × 3 = 100 to the average. Wasting three darts on a double and hitting singles instead of the double drags the average down significantly on checkout.

Planning your scoring phase

Experienced players think about where they want to be for their final visit well before they get there. Common targets to aim for going into a checkout visit:

Remaining score to leave	Strategy
170	Maximum possible checkout; T20, T20, Bull
121	Classic three-dart via T17, T10, D25
100	Clean T20, D20
81	T19, D12
40	D20, one dart to finish
32	D16

The tracker suggests a checkout route once your remaining score enters finishing range (170 or below). If your score lands on a bogey number, plan to score an odd amount on your previous visit to avoid it.

Using the tracker for practice

Beyond live games, the tracker is useful for solo practice drills:

501 practice rounds: Play a full leg solo, record your visits, and track whether your average improves week to week.
Checkout practice: Manually set a starting score (for example 100 or 170) by entering a series of visits that bring you to that point, then practice the checkout.
Visit consistency: Compare your best and worst visits in a session to identify whether your variance is in scoring or finishing.