Running Calculators that Change Your Stats
Pace · Heart Rate · Race Prediction · Training Plans
Aerix is a collection of free running training tools, including pace calculators, race time predictors, and heart rate zone calculators, to help you train scientifically.
🔥 Key Tools
⏱️ Pace Calculator
Calculate the perfect running pace for your target time and distance. Check min/km and mph easily.
🏁 Race Predictor
Predict your half marathon and full marathon times based on your latest 5K or 10K race results.
❤️ HR Zone Calculator
Set effective aerobic and anaerobic training zones using your max and resting heart rate.
🎯 Recommended Tools by Runner Type
🟢 Training for a Race
🔵 Beginner Runner
🟡 Treadmill User
🛠 Collection of All Running Tools
Calculators & Tools
📚 Running Resources
📊 Pace Charts
Check your target pace for 5K, 10K, Half, and Full Marathon at a glance.
📖 Running Glossary
Clear explanations of running terms like Intervals, LSD, and VO2max.
📚 Running Wiki
In-depth guides on running science, history, and training methods.
🏃 Training Plans
💡 Aerix is Recommended for
- ✓Runners preparing for their first marathon
- ✓Runners who want to set target records
- ✓Runners who want to train based on heart rate
- ✓Those who want accurate treadmill calculations
- ✓Those looking for a free running calculator
⭐ Why Aerix is Different
- ✅Free to use without registration
- ✅Mobile optimized
- ✅Running-focused calculators only
- ✅Fast and simple interface
- ✅No personal data stored
🚀 Get Started Today
Train smarter and run faster. Calculate your running goals with Aerix.