128 SecTion | 3 Fundamentals and Units of Measurement Table 3.8 U.S. to SI Units Conversion Factors--Contd. U.S. Unit Mass oz lb Short Ton (2000 lb) Long Ton (2240 lb) Mass/volume oz/in 3 lb/ft 3 lb/in 3 lb/U.S. Gal Acceleration Multiplier 2.834 952 × 10 ­2 4.535 924 × 10 ­1 9.071 847 × 10 2 SI Unit kg kg kg kg 1.016 047 × 10 3 1.729 994 × 10 3 1.601 846 × 10 1 2.767 990 × 10 4 1.198 264 × 10 2 kg/m 3 kg/m 3 kg/m 3 kg/m 3