PURPOSE: Examining cardiorespiratory fitness levels (CRF) among athletes are important to coaches and can be measured through a variety of field tests. CRF assessed directly through a maximal graded treadmill test in a laboratory setting is not realistic for most coaches to measure maximal oxygen consumption (VO2max). Thus a variety of field tests exist to estimate VO2max. The current study was designed to examine the validity of VO2max estimates from the Beep and Hoff test. METHODS: The Beep Test and soccer specific test, Hoff test, were conducted on male Division III soccer athletes. The Beep Test involves running a 20-m distance at a certain pace; pace progressively increased through stages and simulates a graded treadmill test. Two published equations and an iPhone application were used to estimate VO2max from the Beep Test. The Hoff test consists of running and changing directions while dribbling a soccer ball for 8 minutes; total distance covered was used to estimate VO2max. RESULTS: Comparing two published equations to estimate VO2max from the Beep Test was significant (51.06+4.81 vs 53.16+3.30 ml.kg-1.min-1, p<.05). When comparing estimated VO2max from the published equations and from the app (52.13+4.57 ml.kg-1.min-1), significant correlation coefficients were found (r=.906 and r=.913, p.05). Estimated VO2max values using the app and Hoff test provided fair results, r=.661, p<.05. CONCLUSIONS: Estimating VO2max using the Beep Test is a valid field test for coaches to gauge CRF levels. For coaches, using an app to predict VO2max is a feasible option; for a more accurate estimation published equations should be used to estimate CRF levels among athletes. Incorporating a sport specific test to estimate VO2max may require more practice and familiarity with the test itself to accurately estimate fitness levels.