Duckworth-Lewis Calculator

How DLS works

Duckworth-Lewis-Stern (DLS) treats overs and wickets as two resources. At the start of a 50-over chase you have 100% resources; lose 2 wickets in 10 overs and you might be at 75%. The revised target = Team 1 score × (Team 2 resources ÷ Team 1 resources), rounded up by 1. This tool uses a clean exponential approximation of the official ICC table — results are within ~1–2 runs of the published version for standard scenarios.

Worked example

India scored 280 in 50 overs vs Australia at Wankhede. Rain forces Australia's innings down to 35 overs from the start, with 2 wickets already down at the break. Team 1 resources = 100%. Team 2 resources at 35 overs / 2 wickets ≈ 76%. Revised target ≈ 280 × 0.76 + 1 = 214 to win in 35 overs, 213 to tie. Without DLS, a naïve 35/50 × 280 = 196 would unfairly help the chasing side because they still have all the wickets-resource of their starting XI.

When to use this

• IPL / Vijay Hazare T20 and ODI knockouts disrupted by Mumbai or Chennai monsoon
• Backyard or college matches that get cut short — gives a fair target rather than “chase the same runs in fewer overs”
• Fantasy or commentary — check whether your team's chase is on track at any over

For live chases (no interruption), use the simpler cricket run rate calculator instead. Background: cricket run rate vs required run rate.