Sports Calculators

Calculate baseball batting average.

AVG = hits / at_bats

Calculate earned run average.

ERA = earned_runs x 9 / innings

Calculate fielding percentage.

FPCT = (putouts + assists) / total_chances

Calculate Fielding Independent Pitching.

FIP = (13HR + 3BB - 2K) / IP + constant

Calculate magic number for clinching.

Magic = wins + games_remaining - opponent_wins + 1

Calculate OBP for baseball.

OBP = (H + BB + HBP) / (AB + BB + HBP + SF)

Calculate slugging percentage.

SLG = total_bases / at_bats

Calculate Wins Above Replacement.

WAR = (runs_created - replacement) / runs_per_win

Calculate WHIP for baseball.

WHIP = (walks + hits) / innings

Calculate vertical jump needed to dunk.

Jump = rim_height - standing_reach + 6

Calculate effective field goal percentage.

eFG = (FGM + 0.5 x 3PM) / FGA

Calculate basketball game score performance.

Game Score = PTS + 0.4FG - 0.7FGA - 0.4(plus) + 0.7OREB + 0.3DREB + STL + 0.7AST + 0.7BLK - 0.4PF - TOV

Calculate TS% in basketball.

TS% = PTS / (2 x (FGA + 0.44 x FTA))

Estimate calories burned during exercise.

MET x weight x duration

Estimate calories burned while running.

Cal = weight x distance x 1.036

Estimate calories burned while walking.

Cal = weight x distance x 0.5

Estimate calories burned while cycling.

Cal = MET x weight x hours

Estimate calories burned while swimming.

Cal = MET x weight x hours

Estimate calories burned jumping rope.

Cal = 0.1 x jumps x weight

Convert steps to calories burned.

Cal = steps x 0.04 x weight_factor

Estimate calories burned climbing stairs.

Cal = 0.17 x flights x weight

Estimate weight loss from exercise calories.

Weight lost = calories_burned / 7700

Calculate cricket batting strike rate.

SR = runs / balls x 100

Calculate cricket bowling average.

Ave = runs_conceded / wickets

Calculate cricket net run rate.

NRR = (runs_scored / overs_batted) - (runs_conceded / overs_bowled)

Calculate revised target in rain-affected matches.

Target = original_score x (team2_resources / team1_resources)

Calculate bike speed from cadence and gear.

Speed = cadence x wheel_circ x gear_ratio x 60

Calculate gear inches and development.

Gear inches = wheel_diameter x gear_ratio

Calculate cycling time and average speed.

Time = distance / speed

Calculate frame size from height and inseam.

Frame = inseam x 0.67

Calculate bike chain length.

Chain = (2 x CS + 1/4 x (FD + RD)) / 0.5

Estimate cycling power output.

Watts = (0.5 x CdA x rho x v^3 + m x g x Crr x v) / efficiency

Calculate running pace from time and distance.

Pace = time / distance

Calculate target marathon pace.

Pace = target_time / 42.195

Predict race time from a recent race.

Riegel formula: T2 = T1 x (D2/D1)^1.06

Calculate lap/split times for a race.

Split = total_time x segment_dist / total_dist

Convert steps to kilometers walked.

Distance = steps x stride_length

Convert steps to miles walked.

Miles = steps x stride_ft / 5280

Calculate running stride length from height and pace.

Stride = height x ratio

Estimate VO2 max from race performance.

VO2max = 0.2 x speed + 0.9 x speed x grade + 3.5

Calculate training paces from race time.

Pace zones based on VDOT/critical speed

Calculate 1RM from weight lifted for reps.

1RM = weight x (1 + reps / 30)

Estimate bench press 1RM.

1RM = weight x (36 / (37 - reps))

Calculate Wilks coefficient for powerlifting.

Coefficient based on bodyweight and sex

Calculate heart rate training zones.

HR zones by max HR percentage

Estimate VO2 max from resting HR.

VO2max = 15.3 x (maxHR / restingHR)

Calculate MET-minutes per week for physical activity.

MET-min = MET x minutes x frequency

Calculate maximum heart rate by age.

HRmax = 220 - age

Calculate heart rate recovery after exercise.

HRR_exercise - HRR_1min = recovery

Calculate hull speed of a displacement boat.

Speed = 1.34 x sqrt(LWL)

Calculate recommended scuba diving weight.

Weight = 10% of bodyweight (saltwater)

Convert swim times between pool lengths.

Time per 100m x distance / 100

Estimate fish weight from length and girth.

Weight = length x girth^2 / 800

Calculate Elo rating change after a match.

New_Elo = Old + K x (S - E)

Calculate NFL passer rating.

Rating formula from comp, yards, TD, INT

Calculate winning percentage.

Win% = wins / (wins + losses) x 100

Calculate recommended ski length.

Ski length based on height and ability

Calculate minimum room size for pool table.

Room = table_length + 2 x cue_length

Calculate hiking time using Naismith rule.

Time = distance/5 + elevation_gain/600

Estimate tennis ball consumption.

Balls = sessions / balls_per_session

Calculate goalie save percentage.

SV% = saves / shots