T20 Run Rate Calculation

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T20 Cricket Run Rate Calculator

Enter partial overs as decimals (e.g., 4.3 is 4 overs, 3 balls).
Leave blank if this is the first innings.
Current Run Rate (CRR)
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Projected Score (20 Overs)
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Required Run Rate (RRR)
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Equation
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Understanding T20 Run Rates

In Twenty20 (T20) cricket, the run rate is the most critical metric governing the flow of the game. Due to the limited number of overs (20 per side), maintaining a high scoring rate is essential. This calculator helps you determine the Current Run Rate (CRR) and, if chasing a target, the Required Run Rate (RRR).

How to Calculate Current Run Rate (CRR)

The Current Run Rate is simply the average number of runs scored per over. However, cricket overs are composed of 6 balls, making the math slightly unique when dealing with partial overs (e.g., 5.4 overs).

CRR = Total Runs Scored / Total Overs Bowled

Note on decimals: In cricket notation, "10.3 overs" does not mean 10.3 decimal. It means 10 full overs and 3 balls. To calculate accurately, we convert everything to balls or decimalized overs (where 3 balls = 0.5 overs).

Projected Score Formula

The projected score estimates the final total if the team continues to bat at the current rate for the full 20 overs.

Projected Score = CRR × 20

Required Run Rate (RRR) in a Chase

When a team is batting second, the Required Run Rate tells them how many runs per over they need to hit to win. As dot balls accumulate, the RRR climbs, putting pressure on the batting side.

RRR = Runs Needed to Win / Overs Remaining

For example, if a team needs 40 runs off the last 4 overs, the RRR is 10.00. Understanding the gap between CRR and RRR is key to analyzing match situations.

Why is this important for T20?

Unlike Test cricket, T20 is a game of margins. A difference of 0.5 in run rate over 20 overs equals a difference of 10 runs, which often decides the match. Teams use these calculations to pace their innings, deciding when to attack (usually during the Powerplay or Death Overs) and when to consolidate.

function calculateRunRate() { // 1. Get Inputs var runs = document.getElementById('runsScored').value; var oversRaw = document.getElementById('oversBowled').value; var target = document.getElementById('targetScore').value; // 2. Validate Inputs if (runs === "" || oversRaw === "") { alert("Please enter both Runs Scored and Overs Bowled."); return; } var runsNum = parseFloat(runs); var oversNum = parseFloat(oversRaw); var targetNum = target === "" ? 0 : parseFloat(target); // Validate Overs Logic (balls part cannot be > 5) var oversInteger = Math.floor(oversNum); var oversDecimalPart = Math.round((oversNum – oversInteger) * 10); if (oversDecimalPart >= 6) { alert("Invalid Overs format. The decimal part represents balls and cannot be 6 or higher (e.g., use 5.0 instead of 4.6)."); return; } if (oversNum > 20) { alert("Overs cannot exceed 20 in a T20 match."); return; } // 3. Convert Cricket Notation to Mathematical Overs // e.g., 4.3 overs = 4 * 6 + 3 = 27 balls. // Real Decimal Overs = 27 / 6 = 4.5 var totalBalls = (oversInteger * 6) + oversDecimalPart; if (totalBalls === 0) { alert("Overs cannot be 0."); return; } var realDecimalOvers = totalBalls / 6; // 4. Calculate Current Run Rate (CRR) var crr = runsNum / realDecimalOvers; var projected = crr * 20; // 5. Display Standard Results document.getElementById('results-area').style.display = 'block'; document.getElementById('res-crr').innerHTML = crr.toFixed(2); document.getElementById('res-projected').innerHTML = Math.round(projected); // 6. Calculate Chasing Logic if Target provided var reqBlock = document.getElementById('req-block'); var needBlock = document.getElementById('need-block'); var ballsMsg = document.getElementById('balls-remaining-msg'); var ballsRemaining = 120 – totalBalls; var oversRemaining = ballsRemaining / 6; ballsMsg.innerHTML = "" + totalBalls + " balls bowled, " + ballsRemaining + " balls remaining."; if (target !== "" && targetNum > 0) { reqBlock.style.display = 'block'; needBlock.style.display = 'block'; var runsNeeded = targetNum – runsNum; if (runsNeeded <= 0) { document.getElementById('res-rrr').innerHTML = "Target Met"; document.getElementById('res-rrr').style.color = "#2e7d32"; document.getElementById('res-equation').innerHTML = "Won by " + Math.abs(runsNeeded) + " runs (surplus)"; } else if (ballsRemaining <= 0) { document.getElementById('res-rrr').innerHTML = "Innings Over"; document.getElementById('res-equation').innerHTML = "Lost by " + runsNeeded + " runs"; } else { var rrr = runsNeeded / oversRemaining; document.getElementById('res-rrr').innerHTML = rrr.toFixed(2); document.getElementById('res-rrr').style.color = "#d32f2f"; // Red for urgency document.getElementById('res-equation').innerHTML = runsNeeded + " runs off " + ballsRemaining + " balls"; } } else { reqBlock.style.display = 'none'; needBlock.style.display = 'none'; } }

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