Biodiesels are alkyl esters produced by transesterification of higher fatty acids (aliphatic chains composed of 14 to 22 carbon units) from animal fats and/or vegetable oils. The cold filter plugging points (CFPP) of biodiesels are not only higher than that of petro-diesel, but they also differ from the melting point of the raw (unesterified) materials. In this study, we empirically derived equations that estimated the CFPP of a biodiesel based on its fatty acid content, using various biodiesel blends containing four methyl esters with different fatty acid compositions: soybean (SME), palm (PME), rapeseed (RME), and lard (LME). These blending ratio experiments yielded three equations that described the correlation between CFPP and fatty acid content: Y (CFPP, $^{circ}C$) = -3.1X (blending ratio) - 12.7 (PME/SME); Y = 2.2X - 10.7 (LME/SME); and Y = -4.0X - 13.0 (PME/RME). We also obtained the correlation between CFPP and total saturated fatty acid methyl ester content in the biodiesels: Y (CFPP, $^{circ}C$) = 0.449X (total saturated fatty acid methyl ester content, wt%) - 9.198. These empirical equations accurately predicted CFPP values of biodiesel compounds with known fatty acid compositions, facilitating the use of diverse biodiesels in industrial fields.