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These tables contain second order polynomial coefficients for calculating galaxy absolute magnitudes in the redshift range 0 < z < 1.2 from single observed colors using the method of Beare et al. 2014 (ApJ, 797, 104). These coefficients are used to calculate absolute magnitudes in "The z < 1.2 optical luminosity function for a sample of ~410 000 galaxies in Bootes" (Beare, R.A., Brown, M. J. I., & Pimbblet, K., submitted to ApJ) and in a forthcoming paper by the same authors: "Evolution of the stellar mass function and the infrared luminosity function of galaxies since z = 1.2". The tables assume h = 0.7 and Omega_0 = 0.3. Tables are provided for determining the following absolute magnitudes: Bessell U, B, V, R and I; NEWFIRM J; Johnson K; Sloan g, r and i. Observed colors are derived from the following apparent magnitudes: NDWFS Bw; Bessell R and I; NEWFIRM J and Ks; IRAC [3.6 micron] and [4.5 micron]. The recommended colors for different absolute magnitudes and redshift ranges are as follows: abs U (Bessell) z = 0.0 to 0.8:(Bw − R) z = 0.8 to 1.2: (R − I) abs B (Bessell) z = 0.0 to 0.4:(Bw − R) z = 0.4 to 0.8: (R − I) z = 0.8 to 1.2: (I − J) abs V (Bessell) z = 0.0 to 0.5: (R − I) z = 0.5 to 1.2: (I − J) abs R (Bessell) z = 0.0 to 0.19: (R − I) z = 0.19 to 1.2: (I − J) abs I (Bessell) z = 0.0 to 0.46: (I − J) z = 0.46 to 1.2: (R − J) abs J (NEWFIRM) z = 0.0 to 0.53: (R − I) z = 0.53 to 1.2: (I − J) abs K (Johnson) z = 0.0 to 0.6: (Ks − ch1) where ch1 = [3.6 micron] z = 0.56 to 1.2: (ch1 - ch2) ) where ch1 = [3.6 micron] and ch2 = [4.5 micron] abs u (Sloan u) z = 0.0 to 1.2:(Bw − R) abs gs (Sloan g) z = 0.0 to 0.5:(Bw − R) z = 0.45 to 0.8: (R − I) z = 0.8 to 1.2: (I − J) abs rs (Sloan r) z = 0.0 to 1.2: (R − J) abs is (Sloan i) z = 0.0 to 0.7: (I − J) z = 0.7 to 1.2: (J − Ks) abs zs (Sloan z) z = 0.0 to 1.2: (J − Ks)