Bowling Economy Rate Calculator
Calculate runs conceded per over — T20, ODI & Test
Enter total runs conceded by the bowler.
Enter overs
bowled in cricket notation (e.g., 8.3
= 8 overs 3 balls). Never use 6+ after the dot.
Click Calculate — overs are converted to decimal automatically.
Formula: Runs Conceded ÷ Decimal Overs Bowled
Example: 42 runs in 8.3 overs = 4.94 runs per over
Understanding Bowling Economy Rate & Over Mathematics
Bowling economy rate measures defensive containment by calculating the average number of runs a bowler concedes for every completed six-ball over bowled. While bowling average measures runs conceded per dismissal and bowling strike rate measures balls required per wicket, economy rate quantifies run suppression—making it the definitive metric for controlling match tempo in limited-overs cricket.
The core complexity in calculating economy rate stems from cricket's base-6 over notation. In cricket scorekeeping, an entry of 8.3 overs does not mean 8.3 tenths of an over; it represents 8 completed overs plus 3 legal deliveries. Because 3 balls equal half an over (3 ÷ 6 = 0.5), 8.3 overs equals 8.5 decimal overs (or 51 total balls). Attempting to divide directly by 8.3 distorts the result and yields an inaccurate figure.
Scorekeeping rules also strictly distinguish bowler extras from team extras. All runs conceded directly from the bat, plus bowler-induced infractions (wides and no-balls), are charged to the bowler's personal figures. By contrast, byes, leg-byes, and penalty runs are credited to team extras and are never charged against the bowler's economy rate.
Economy Rate Benchmarks by Match Phase & Role
Historic Economical Bowling Spells
- Bapu Nadkarni (0.15 Economy Rate): In the 1964 Madras Test against England, India's Bapu Nadkarni bowled 32 overs, including 27 maidens, conceding just 5 runs (32-27-5-0) with 21 consecutive maiden overs.
- Phil Simmons (0.30 Economy Rate): Against Pakistan in Sydney (1992), Phil Simmons bowled 10 overs, 8 maidens, taking 4 wickets for just 3 runs (10-8-3-4)—the lowest economy rate in a completed 10-over ODI spell.
- Lockie Ferguson (0.00 Economy Rate): In the 2024 ICC T20 World Cup against Papua New Guinea, New Zealand's Lockie Ferguson bowled a complete 4-over allocation of maidens (4-4-0-3) without conceding a single run.
The Bowling Economy Formula & Worked Examples
Economy rate measures how many runs a bowler gives away per over. The most important thing to remember is that cricket overs are base-6, not normal decimals. Because an over has 6 balls, 8.3 overs means 8 full overs plus 3 balls (which is 8.5 overs, not 8.3).
The Two Steps
Step 1: Decimal Overs = Completed Overs + (Extra Balls ÷ 6)
Step 2: Economy Rate = Runs Conceded ÷ Decimal Overs
Worked Match Examples
T20 4-Over Spell: A bowler concedes 28 runs in 4.0 overs.
28 ÷ 4.0 = 7.00 runs per over.
Incomplete ODI Spell: A bowler gives away 42 runs in 8.3 overs.
8 overs and 3 balls is 8 + (3 ÷ 6) = 8.5 decimal overs.
42 ÷ 8.5 = 4.94 runs per over. (Dividing directly by 8.3 on a calculator gives 5.06, which is incorrect).
Long Test Spell: A bowler concedes 58 runs in 23.4 overs.
23 overs and 4 balls is 23 + (4 ÷ 6) = 23.667 decimal overs.
58 ÷ 23.667 = 2.45 runs per over.
Common Mistakes in Bowling Economy Calculations
Dividing Directly by Cricket Notation
Dividing runs by 8.3 instead of 8.5 treats cricket overs as base-10 decimals, creating significant mathematical error in rate metrics.
Charging Byes & Leg-Byes to Bowlers
Byes and leg-byes are fielding/wicketkeeping lapses, not bowling errors. They count towards the team total but must be excluded from bowler figures.
Counting Wides as Legal Deliveries
Wides and no-balls add penalty runs to the bowler's runs conceded, but they are re-bowled and do not advance the over towards completion.
Conflating Economy with Strike Rate
Economy rate measures run containment per over; bowling strike rate measures deliveries bowled per wicket taken. Both are required for holistic analysis.
Bowling Economy Rate FAQs
What is bowling economy rate in cricket?
Bowling economy rate is the average number of runs conceded per completed over, calculated as Runs Conceded ÷ Decimal Overs Bowled. A lower rate reflects greater defensive containment and run suppression.
Why must overs like 8.3 be converted to 8.5 before dividing?
Cricket overs operate in base-6 notation, where each over contains 6 legal balls. The notation 8.3 denotes 8 complete overs and 3 balls (3 ÷ 6 = 0.5 overs). Dividing directly by 8.3 distorts the mathematics and produces an erroneous result.
Do wides and no-balls count towards a bowler's economy rate?
Yes. Penalty runs resulting from wides and no-balls are debited directly to the bowler's personal runs conceded tally, elevating their economy rate. However, because they are illegal deliveries, they do not count as balls bowled toward completing the over.
Do byes and leg-byes count in a bowler's economy rate?
No. Under official cricket scorekeeping laws, byes and leg-byes are classified as fielding extras. They are added to the team total but are omitted from the bowler's personal analysis and economy calculation.
How are penalty runs attributed?
Penalty runs awarded for infractions (such as the ball striking a fielder's helmet placed on the ground) are added directly to the batting side's total extras and are never charged to the individual bowler.
Do Super Over figures count toward official career economy rates?
No. Super Over overs and runs conceded are recorded independently as match tiebreaker events and are excluded by the ICC from official career averages, economy rates, and records.
What is the difference between economy rate and bowling strike rate?
Economy rate measures runs conceded per over (containment efficiency). Bowling strike rate measures legal balls bowled per wicket taken (wicket-taking frequency). A bowler can have an outstanding economy rate with few wickets, or vice versa.
Is my calculation data saved or transmitted to a server?
No. All calculations run entirely in your local browser environment via JavaScript. No data is stored or transmitted externally.