Sports & Athletics
Calculators.

Marathon pace, race splits, heart rate zones, and calorie burn — train smarter with data.

0 Tools

0 Subcategories

Always Free

Running & Racing

4 tools

Pace charts, split tables, heart rate training zones, and calorie burn — every number a runner needs.

Marathon Pace

Finish time from target pace with mile and km splits.

marathonsplits

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5K / 10K Pace

Race pace and splits for any standard distance.

racepace

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Heart Rate Zones

Five training zones from max heart rate and resting HR.

trainingzones

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Running Calories

Calories burned by distance, pace, weight, and terrain.

caloriesdistance

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Hiking

1 tool

Trail time estimates, calorie burn, water needs, and difficulty ratings — everything you need to plan a hike with confidence.

Hiking Time Calculator

Naismith's Rule estimate with calories, water needs, and trail difficulty.

naismithelevationcalories

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Weightlifting

3 tools

1RM estimation, strength standards comparison, and training max planning — everything a strength athlete needs.

Deadlift Calculator

7-formula 1RM estimator with strength standards, percentage table, and 5/3/1 training planner.

1RMstrength level5/3/1powerlifting

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Squat Calculator

Estimate squat 1RM using 7 formulas, find your strength level, and build a training plan.

1RMstrength level5/3/1

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Bench Press Calculator

1RM with 4 formulas, warm-up sets, grip corrections, paused/incline adjustments, Wilks/DOTS, 5/3/1 and Smolov Jr planner.

1RMwarm-up setsSmolov JrWilks

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Baseball