Running
All running tools
Running
Pace Calculator
Pace, finish time or distance from the other two.
10 km in 50:00 = 5:00 /km
Running
Race Time Predictor
Predicted times for other distances from one race.
10K 50:00 → half 1:50:19
Running
Race Split Calculator
Even or negative splits with elapsed times for each marker.
Marathon 4:00:00 → 5:41 /km
Running
Pace Band Generator
A printable wristband with your elapsed times.
Marathon 4:00:00, every km
Running
Boston Qualifier Calculator
Your BQ standard and your margin against recent cut-offs.
Men 42, 3:00:00 → 5:00 under
Running
VO2 Max Calculator
Fitness estimate from a race, plus equivalent race times.
5K in 25:00 → 38.3
Running
Heart Rate Zone Calculator
Five training zones from age or your own max.
Age 35 → max 184 bpm
Running
Treadmill Pace Calculator
Belt speed to pace, and what an incline is worth.
10 km/h = 6:00 /km
Running
Running Calories Calculator
Energy used on a run, total and above resting.
70 kg, 10 km in 1:00:00 = 774 kcal
Running
Pace Converter
mph, km/h, minutes per mile and minutes per km, converted both ways.
6 mph = 10:00 /mi = 6:13 /km
Running
Treadmill Calorie Calculator
Calories for a treadmill walk or run, with incline.
155 lb, 12-3-30 = 305 kcal
Running
VDOT Calculator
VDOT from a race, with equivalent times and training paces.
10K in 50:00 → VDOT 40.0
Running
Zone 2 Heart Rate Calculator
Zone 2 by percent of max and by heart rate reserve, side by side.
Age 40 → 108-126 bpm
Running
Max Heart Rate Calculator
Five max heart rate formulas side by side, with target heart rates.
Age 40 → 171 to 185 bpm
Running
Age Grade Calculator
Age-graded percentage and time for road races, on the 2025 tables.
Male 50, 5K 25:00 → 58.42%
Strength
All strength tools
Strength
One Rep Max Calculator
Estimated max from any set, plus training percentages.
100 kg × 5 = 115.5 kg
Strength
1RM Percentage Chart
Weights from 50 to 100% of your max, with reps.
80% of 100 kg = 80 kg, about 8 reps
Strength
RPE Calculator
Weights for sets planned by effort, plus the RPE chart.
100 kg × 5 @8 → 3 @9 = 110 kg
Strength
Barbell Plate Calculator
Which plates go on each side for any weight.
100 kg = 25 + 15 each side
Strength
DOTS, Wilks and IPF GL Calculator
DOTS, IPF GL, Wilks and Wilks 2020 in one place.
83 kg, 600 kg total = 405.05 DOTS
Cricket
All cricket tools
Cricket
Net Run Rate Calculator
Tournament NRR, with the all-out rule built in.
1016/238.2 v 851/250 = +0.859
Cricket
Points Table Maker
A full league table with points and NRR.
4 teams, 6 matches → table
Cricket
NRR Qualification Calculator
The winning margin needed to overtake on NRR.
Bat first 180 → restrict to 144
Cricket
Required Run Rate Calculator
Runs per over needed in a chase, over by over.
Need 94 off 54 = 10.44 an over
Cricket
Projected Score Calculator
Final total at the current rate and others.
86 after 9.3 overs → 181
Cricket
Batting Average and Strike Rate Calculator
Average, strike rate and boundary share.
965 runs, 20 outs = 48.25
Cricket
Bowling Economy Calculator
Economy, average, strike rate and dot balls.
286 off 38.4 overs = 7.40
Cricket
Overs to Balls Converter
Overs, balls and decimals, and adding spells.
18.4 overs = 112 balls
HYROX
All HYROX tools
HYROX
HYROX Weights
Sled, kettlebell, sandbag and wall ball weights for Open, Pro, Doubles and Relay, in lb and kg.
Sled push 335 lb (152 kg)
HYROX
HYROX Stations
The eight stations in order, with distances, reps, the Roxzone and the main rules.
8 × 1 km run + 8 stations
HYROX
HYROX Pace Calculator
Finish time and splits from your run pace, station times and Roxzone time.
5:30 /km runs → 1:30:00
HYROX
HYROX Doubles and Relay Planner
Split the doubles stations or set the relay legs, with weights.
50/50 doubles: 1,240 m + 50 reps each
HYROX
HYROX Workout Builder
Full or half race simulations at your division’s weights.
Half simulation: 4 km + eight stations
Baseball
All baseball tools
Baseball
ERA Calculator
Earned run average, with 6.1 and 6.2 innings handled.
62 ER in 180.2 IP = 3.09
Baseball
WHIP Calculator
Walks plus hits per inning pitched.
48 BB + 155 H in 180.2 IP = 1.12
Baseball
Batting Average Calculator
Hits over at-bats, and what the next game does to it.
165 H in 550 AB = .300
Baseball
On-Base Percentage Calculator
Hits, walks and HBP over plate appearances.
230 on base in 620 = .371
Baseball
Slugging Percentage Calculator
Total bases per at-bat, from a normal stat line.
278 TB in 550 AB = .505
Baseball
OPS Calculator
On-base plus slugging, with AVG, OBP and SLG.
.371 + .505 = .876
How these calculators work
The formula is on the page
Every tool prints the equation it uses and a worked example, so you can check the math yourself.
Sources you can check
Methods come from published research and governing body rules, and each page links to them.
Your numbers stay with you
Calculations run in your browser. Nothing you type is sent to us or stored on a server.
Share a result
Copy a link that reopens the calculator with your numbers filled in, handy for training partners and group chats.