Duckworth-Lewis Calculator

DLS measures each team's run-scoring resources — the combination of overs remaining and wickets in hand — as a percentage. The revised target is Team 1's score multiplied by the ratio of Team 2's resources to Team 1's resources. When Team 2 has more resources, a bonus based on an average 50-over score is added instead.

This calculator uses the DLS Standard Edition, the publicly available version used in club and amateur cricket. International and major domestic matches use the Professional Edition, which adjusts the resource table based on the first-innings score and may produce a slightly different target. Treat this as a close estimate, not the official figure for a professional match.

The par score is what Team 2 should have reached at a given point to be level with Team 1's performance. If rain ends the match and Team 2 is above the par score they win; if below, they lose; if exactly level, the match is tied.

The Standard Edition table is built for 50-over cricket. For T20 the resources are scaled to a 20-over innings, which is an approximation. It gives a directionally correct target for club T20, but official T20 internationals use the Professional Edition.

Because a team with more wickets in hand can score faster in the overs it has left. DLS treats wickets and overs together as resources — losing an early wicket costs more resource percentage than losing a later one, which is why the method is fairer than a simple run-rate comparison.

Duckworth-Lewis-Stern. Frank Duckworth and Tony Lewis devised the original method, and Steven Stern later became its custodian and updated it, adding his initial to the name in 2014.