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We study star formation rate (SFR) indicators for Wide-field Infrared SurveyExplorer (WISE) 22 \mu m selected, star-forming galaxies at 0.01 < z < 0.3 inthe Sloan Digital Sky Survey. Using extinction-corrected H\alpha\ luminositiesand total infrared luminosities as reference SFR estimates, we calibrate WISEmid-infrared (MIR) related SFR indicators. Both 12 and 22 \mu m monochromaticluminosities correlate well with the reference SFR estimates, but tend tounderestimate SFRs of metal-poor galaxies (at lower than solar metallicity),consistent with previous studies. We mitigate this metallicity dependence usinga linear combination of observed H\alpha\ and WISE MIR luminosities for SFRestimates. The combination provides robust SFR measurements as Kennicutt et al.(2009) applied to Spitzer data. However, we find that the coefficient a inL_H\alpha(obs) + a L_MIR increases with SFR, and show that a non-linearcombination of observed H\alpha\ and MIR luminosities gives the best SFRestimates with small scatters and with little dependence on physicalparameters. Such a combination of H\alpha\ and MIR luminosities for SFRestimates is first applied to WISE data. We provide several SFR recipes usingWISE data applicable to galaxies with 0.1 <~ SFR (M_sun yr^-1) <~ 100.

The Calibration of Star Formation Rate Indicators for WISE 22 Micron Selected Galaxies in the SDSS