The most complete set of tools and calculators for Runners. Save any calculation with a custom name. Running tools and running calculators include- Heart Rate Training Zones (calculate your heart rate zones using maximum heart rate)- Max Heart Rate Calculator (uses your age)- Pace Distance Time Conversion- Distance Conversion (miles, KM, yards and meters)- Pace Conversion (convert KM per minute to miles per minute and vice versa)- Running Splits/ Lap Generator (create splits table for any distance and time)- Age Grade Calculator (calculate your age grade from a recent race result)- General Race Predictor (predict a race time from using a previous result)- Slate/Vickers Marathon Predictor (predict your marathon time based on training mileage and a recent race result)- Yasso 800s (calculator to work out Yasso workout session times)- Percent Calculator- Percent Calculator (time)- Percentage of Calculator- Percentage of Calculator (time)- Percentage Improvement Calculator (time)