- ExRx: http://www.exrx.net/Calculators.html; a broad range of calculators that cover: fitness testing, metabolism, diet & nutrition, pace, timers and converters.
- Bodybuilding.com: http://www.bodybuilding.com/fun/calculators.htm; a broad range of calculators that cover: lifting, cardiovascular, supplements, nutrition, sports, aloholic intake and body type.
- ACE (American Council on Exercise): http://www.acefitness.org/acefit/tools-and-calculators/; a broad range of calculators that cover: BMI (Body Mass Index), Body Fat Percentage, Blood Pressure, Daily Caloric Needs, Nutritional Scoring System, Risk of Chronic Disease, Heart Rate Zone, Weight Training Load & Physical Activity Calorie Counter.
- Marathon Guide: http://www.marathonguide.com/fitnesscalcs/; Provides a number of running related calculators that cover: Pace/Time/Distance, Pace Chart, Race Result Predictor, Pace Wrsitband Creator & Age Equivalent results.
- Runners World: http://www.runnersworld.com/nutrition-weight-loss/fitness-calculators; Provides calculators for: BMI, Calories Burned, Target Heart Rate & Daily Calories.
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