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This study aims to estimate fatigue life of steels under multiaxial loadingbased on commonly available tensile properties or hardness. Multiaxial fatigue modelshave been developed to predict fatigue behavior under multiaxial state of loading. Thesemodels relate multiaxial stress/strain components to uniaxial fatigue properties topredict fatigue life. Generating fatigue properties is a significant cost and timeconsuming process; hence, it would be beneficial to estimate fatigue properties for lifeprediction. In this study, Roessle-Fatemi, Muralidharan-Manson, and Bäumel-Seegerprediction methods are employed to predict uniaxial fatigue properties of steels based onusually available or easily measurable tensile properties in the absence of any fatiguedata. Appropriate multiaxial fatigue models representing the damage mechanism arethen used along with the estimated uniaxial fatigue properties to predict fatigue livesunder in-phase and out-of-phase multiaxial loading.