Heart rate zone calculator
Forget the heart rate zones your watch is giving you, they are fit for population averages. You're not average. You're you. See how to calculate your true heart rate zones!
Calculators
While we love nuance for individual athletes, we have built calculators as tools to help provide starting points for athletes looking to fine tune things.
Our Calculators
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Long run fuel calculator
Math can be hard. Do I need 1 gel for my run? 5? Use this calculator to get a sense of the minimum amount of fuel you should be consuming on your runs.
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Minimum daily carb calculator
Carbohydrate underconsumption is common in our sport, but not always because it's intentional. Use this calculator to get a sense of the minimum amount of carbs recommended by sports dietitians to support your training and recovery.
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Running pace adjustments for heat and humidity calculator
It's not just you, running in the heat and humidity is a different sport than running on a crisp fall day. Use this calculator to maximize your summer training and racing.
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Sweat rate calculator
Hydration needs are highly unique, based on weather, duration, intensity, but also your own genetics. This calculator will help you understand your unique fluid loses so that you can avoid the negative impacts of dehydration while racing and training.
Still have questions?
We're happy to answer any questions you have.