Trend Cricket

Run rate, NRR & strike rate calculators

Current & required run rate

Cricket run rate calculator

Runs, wickets and overs in, run rate out, with the rate needed in a chase and where the innings is heading. Type overs the way the scoreboard shows them: 14.2 is 14 overs and 2 balls.

The innings6-ball overs

Leave empty in the first innings. The target is the other side's total plus one.

Total112/3for 3 wickets
Overs14.2of 20
Run rate7.81runs an over
Target171170 + 1
Need59runs
Balls left345.4 overs
Req. rate10.41an over

Needs 59 runs from 34 balls: 10.41 an over, 2.60 an over faster than the current rate.

Projected total

After 14.2 overs, against the target of 171 (the thin line).

  • 6 an over14625 short
  • Current rate 7.8115615 short
  • 8 an over15714 short
  • 10 an over1692 short
  • 12 an over180gets there

How the run rate is worked out

Current run rate is runs divided by overs. The catch is the overs figure: on a scoreboard 14.2 means 14 overs and 2 balls, which is 86 balls or 14⅓ overs, not fourteen point two. The calculator turns overs into balls first, so 112 runs off 14.2 overs is 112 × 6 ÷ 86 = 7.81 an over. Dividing by 14.2 would give 7.89.

Required run rate is the runs still needed divided by the overs left. The target is one more than the side batting first made: 170 sets a target of 171. Needing 59 with 34 balls left (5.4 overs) means 59 × 6 ÷ 34 = 10.41 an over.

Projected total adds what the remaining balls would bring at a steady rate. At the current 7.81 an over, 34 more balls add about 44 runs, for 156. The fixed rates beside it (6, 8, 10 and 12 an over in a 20-over game, 4 to 7 in a 50-over game) are the comparison a broadcaster shows.

Wides and no-balls add runs but don't count as balls of the over, so take the runs and overs straight from the scoreboard and the sums come out right. An innings ends at ten wickets or when its overs run out; then the board shows the outcome instead of a projection.

Sources

More cricket calculators

Tables, batting, bowling and the overs arithmetic behind them.

Questions

Why not just divide the runs by 14.2?

Because 14.2 overs is 14 overs and 2 balls. Two balls are a third of an over, so the real figure is 14.333. Dividing by 14.2 makes the run rate look a little higher than it is, and the error grows later in an over: 14.5 overs is really 14.833.

What target do I enter after rain?

Enter the revised target the umpires announce under the Duckworth–Lewis–Stern method, and change the overs per innings to the reduced number. The calculator then works from those figures, just as the scoreboard does.

Why does the projection ignore wickets?

A projection only assumes a steady scoring rate for the balls that are left. Real innings rarely run that smoothly: sides with wickets in hand tend to speed up at the end, and sides that keep losing wickets slow down. Treat the numbers as a guide, not a forecast.

Is the required run rate the same as the asking rate?

Yes. Commentators call it the asking rate: the runs an over the chasing side needs from now to the end of its overs. When it climbs above the current run rate, the batting side has to speed up.