Runner’s Toolkit

Running calculators and tools for real training.

Find the right tool for pace, race predictions, splits, training zones, shoes, watches, treadmill running and race planning. No signup needed.

Find the right tool

What do you need help with?

Start with the question you have today.

New to runningPlan run/walk intervals Running indoorsConvert treadmill pace I have a goal timeFind race pace + splits I have a recent resultPredict another race Train by effortCalculate heart rate zones I need running shoesFind the right shoe path I need a GPS watchFind a running watch Race missed the goalDebrief what happened

More free running tools

Use these when you need a full plan, a fitness check, a race, shoes or a watch.

Training

Run Walk CalculatorIntervals and finish-time planning for beginners and returners.
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VO2 Max CalculatorEstimate aerobic fitness from a field test or race result.
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Training Plan CreatorTurn a race goal and schedule into a weekly plan.
Open
Heart Rate vs Pace ZonesChoose the better cue for easy runs, tempo and intervals.
Read

Race planning

Missed Goal DebriefReview pacing, fueling, training and race execution.
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Marathon FinderFind a race that fits your timing and race style.
Open

Shoes, watches & gear

Running Shoe FinderNarrow down shoe type by fit, cushioning and training.
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Shoe Mileage TrackerSave multiple pairs and set an inspection reminder for each.
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Running Outfit CalculatorChoose what to wear for temperature and conditions.
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Running Watch FinderMatch budget, battery and training needs to a watch type.
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Planning a race from a recent result?

Use the tools in this order. You can stop as soon as you have the answer you need.

1
PredictEstimate a realistic target from a recent result.
 2
Set paceTurn the goal into min/km or min/mile.
 3
Build splitsCreate the checkpoints you will use on race day.
 4
TrainBuild a weekly plan around the goal.

Useful next steps

Move into a broader guide only when you need more than a calculator.

TrainingTraining PlansFull schedules for race preparation. LearnRunning GuidesEasy days, pacing, recovery and strength. ShoesFind Your ShoeShoe finder, mileage tracker and buying guides. WatchesRunning Watches & TechWatch finder, buyer guides and race-specific picks.

Running calculator FAQ

Which running calculator should I use?
Use Race Pace when you already have a goal time. Use Race Time when you have a recent result and want to predict another distance. Use Split Calculator when you need exact checkpoints. Use Training Zones when you want workout paces.
What should a beginner use first?
Start with the Run Walk Calculator if you are building running time gradually. The Treadmill Pace Calculator and Heart Rate Zone Calculator can also help keep early training controlled.
Are running calculators accurate?
They are useful planning tools, not guarantees. Good inputs matter, and race predictions or training zones can still be affected by fitness, heat, hills, wind, fatigue and the purpose of the workout.
What should I use for a 5K?
Use Run Walk if you are new, Race Pace if you have a goal time, Race Time if you have a recent result, and Split Calculator if you want kilometre or mile checkpoints.
Should I train by heart rate or pace?
Heart rate is useful for managing internal effort, especially on easy runs. Pace is useful when the workout has a specific speed target. Perceived effort helps you judge whether either number makes sense on the day.
Do I need all of these tools?
No. Use the tool that answers your current question. The hub is here so you can come back when the next training decision comes up.

Start with one tool.

Choose the question you need answered now. You can come back when you need pace, splits, zones, race predictions, shoes or a training plan.

Choose a running tool