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Required Run Rate Calculator: runs needed, balls left & current rate
Work out the required run rate (RRR) for an ongoing chase with wickets available. Enter the winning target, current score, overs already used and full innings quota. If the first team made 180, the ordinary winning target is 181. Do not enter 180 by mistake.
Enter a chase and calculate the runs needed per over.
Formula and example
Runs needed = target − current score. Legal balls left = innings quota × 6 − legal balls already used. Required rate = runs needed × 6 ÷ balls left.
For a target of 181, a score of 100 after 12.4 overs in a 20-over chase leaves 81 runs from 44 balls. The required rate is 11.045 runs per over. Current rate is 100 × 6 ÷ 76 = 7.895. These numbers are arithmetic, not a prediction of which side will win.
Understand the scenario table
The table asks a narrow question: what rate would be required for the same remaining runs if only 6, 12, 18, 30, 60 or 120 legal balls remained? It does not predict future scores. Only scenarios with no more than the actual remaining balls appear.
Why is 12.4 not twelve-and-four-tenths overs?
The final digit counts legal balls within the over. 12.4 is 12 × 6 + 4 = 76 balls. Wides and no-balls can add runs without using a legal ball; update the score and overs from the scoreboard.
Does this calculate a DLS target or win probability?
No. It does not model rain resources, wickets, player ability or a win probability. For a revised match, obtain the official target and allocation first; do not infer them here.
What if the innings has already ended?
The tool checks balls remaining and whether the entered target has been reached. It cannot detect an all-out innings because wickets are not an input. Do not treat an ended innings as an ongoing chase.
Overs notation reference: MCC Laws of Cricket 2026, Law 17 (PDF). See also tournament net run rate and overs conversion.