About KalkuloSport
We built KalkuloSport for one reason: to give amateur athletes and everyday fitness enthusiasts the same quality tools that professionals take for granted — completely free.
Our Mission
Sport is for everyone. But the tools to train intelligently are often locked behind expensive apps, wearables or coaching subscriptions. KalkuloSport changes that. Our calculators are based on peer-reviewed exercise science research, adapted for simplicity and practical everyday use — whether you are training for a 5K, cycling on weekends or playing weekend football.
What We Offer
- Running pace and finish-time calculators
- Calorie burn estimators for 10+ sports
- BMI with athlete-specific context
- Heart rate training zones (Karvonen method)
- VO2 max estimation from a simple field test
- Hydration needs based on weight, duration and intensity
Our Approach
All formulas are taken from established exercise science literature and validated field tests. We present results with appropriate context so you understand what the numbers mean — not just a raw figure. Where formulas have known limitations (such as BMI for highly muscular athletes), we flag this clearly.
KalkuloSport is not a medical tool. Results are estimates to guide training decisions. Always consult a qualified sports professional or physician before making significant changes to your training or nutrition.
Contact
Questions, suggestions, or feedback? We'd love to hear from you. Get in touch →