What Is Net Run Rate (NRR) in Cricket?

Net Run Rate (NRR) is the standard tie-breaking statistical method used in round-robin and league cricket tournaments around the world. When two or more teams finish the group stage tied on equal points, NRR determines which team advances to the playoffs or finals.

The Official Net Run Rate Formula

Across an entire tournament, a team's Net Run Rate is defined as the average runs per over scored by that team across all completed innings, minus the average runs per over conceded by that team across all completed innings:

NRR = (Total Runs Scored ÷ Total Overs Faced) − (Total Runs Conceded ÷ Total Overs Bowled)

Crucially, tournament NRR is not the average of each individual match's NRR. Instead, all runs and overs from every match in the league stage are summed together before dividing.

The Golden Rule: What Happens When a Team Is All Out?

The single most misunderstood rule in cricket statistics involves teams that are bowled out before completing their full quota of overs:

If a team is bowled out (loses all 10 wickets) in 16.4 overs of a 20-over match, for Net Run Rate purposes they are counted as having faced the full 20.0 overs—not 16.4 overs!
Conversely, if a chasing team reaches the target in 15.3 overs with wickets in hand, only the actual 15.5 overs (15 overs and 3 balls = 15.5 in decimal) are used in the calculation.

Converting Overs and Balls to Decimal

Because an over consists of 6 legal balls (not 10), you cannot plug 15.3 overs into a calculator as 15.3. Each ball must be divided by 6:

.1 (1 ball) = 1/6 = 0.167
.2 (2 balls) = 2/6 = 0.333
.3 (3 balls) = 3/6 = 0.500
.4 (4 balls) = 4/6 = 0.667
.5 (5 balls) = 5/6 = 0.833

Worked Example: Two-Match Tournament NRR

Suppose Mumbai Strikers play two T20 matches:

Match 1: Mumbai Strikers score 180/6 in 20.0 overs and bowl out their opponents for 140/10 in 18.2 overs. Because the opponents were bowled out, the overs bowled count as the full 20.0 overs.
Match 2: Opponents score 150/8 in 20.0 overs, and Mumbai Strikers chase 153/4 in 17.3 overs (which is 17.5 decimal overs).

Now combine both matches:

Total Runs Scored: 180 + 153 = 333 runs in 20.0 + 17.5 = 37.5 overs → Scoring Rate = 8.880 RPO
Total Runs Conceded: 140 + 150 = 290 runs in 20.0 + 20.0 = 40.0 overs → Conceding Rate = 7.250 RPO
Tournament NRR: 8.880 − 7.250 = +1.630

Every tournament hosted on CricÓ computes this exact ICC-standard NRR calculation in real time as soon as a match result is finalized.