What this calculator does
Net run rate is the scoring rate a team achieves minus the rate it concedes. Scoring 251 in 50 overs while conceding 230 in 50 gives 5.020 minus 4.600, which is a net run rate of +0.420.
It is the standard tiebreaker in limited-overs tournaments, and it rewards margin of victory rather than just the result. A team that wins narrowly gains little; one that wins with overs to spare gains a great deal. This is why sides chasing a small target sometimes appear to be in a hurry for no obvious reason.
The formula
The scoring rate is runs scored divided by overs faced, and the conceding rate is runs conceded divided by overs bowled. Net run rate is the first minus the second. Overs are entered as overs.balls, so 46.3 means 46 overs and 3 balls, which the calculation converts to 46.5 overs before dividing.
| Term | Meaning |
|---|---|
| Net run rate (NRR) | Scoring rate minus conceding rate, in runs per over. |
| Overs.balls notation | 46.3 means 46 overs and 3 balls, not 46.3 overs. Six balls make an over. |
| All out | A team bowled out is charged the full allocation of overs regardless of how many it actually faced, which penalises NRR heavily. |
The inputs explained
| Field | What to enter |
|---|---|
| Runs scored | Runs scored by your team. |
| Overs faced | Overs faced, in overs.balls notation. If the team was bowled out, use the full allocation rather than the overs actually faced. |
| Runs conceded | Runs conceded. |
| Overs bowled | Overs bowled, in overs.balls notation. |
When to use it
Working out a tournament position
Where teams are level on points, net run rate decides who goes through, so it is the figure watched most closely late in a group stage.
Understanding a chase strategy
A side chasing a small total gains far more net run rate by finishing quickly than by batting out the overs, which explains behaviour that otherwise looks reckless.
Calculating what is needed
Working backwards from a target net run rate gives the margin a team needs to win by, which is often the actual question in a final group match.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How does the runs conceded figure change net run rate?
A fixed scoring performance against a range of runs conceded.
| Runs conceded | Net run rate | Scoring rate | Conceding rate |
|---|---|---|---|
| 200 | +1.020 | 5.020 runs/over | 4.000 runs/over |
| 230 | +0.420 | 5.020 runs/over | 4.600 runs/over |
| 260 | -0.180 | 5.020 runs/over | 5.200 runs/over |
| 290 | -0.780 | 5.020 runs/over | 5.800 runs/over |
Questions
How is net run rate calculated?
Runs scored divided by overs faced, minus runs conceded divided by overs bowled. It is a rate difference rather than a ratio, so it is expressed in runs per over and can be negative.
What happens if a team is all out?
The full allocation of overs is used rather than the overs actually faced. A team bowled out for 150 in 35 of its 50 overs is charged with 50 overs, giving a rate of 3.00 rather than 4.29. This is a substantial penalty and is deliberate.
How do I enter overs and balls?
As overs.balls, so 46 overs and 3 balls is entered as 46.3. The calculation converts that to 46.5 overs internally. Entering 46.5 directly would be read as 46 overs and 5 balls, which is a different thing.
Why does net run rate favour big wins?
Because it measures margin rather than outcome. Winning by 100 runs improves it far more than winning by 1, and chasing a target in 20 overs improves it more than taking 49. It is a deliberate design choice, on the basis that a tiebreaker should reward dominance.
For a batting scoring rate on its own, see the batting strike rate calculator. For bowling economy, see the bowling average calculator.