An experiment was conducted to measure the concentration of digestible energy (DE) and metabolize energy (ME) in US-produced fermented soybean meal (FSBM), conventional soybean meal (SBM), and fish meal fed to weanling pigs. A corn-based diet consisting of 96.4% corn was formulated. Three additional diets were formulated containing corn and each of the experimental ingredients (FSBM, SBM and fish meal, respectively.) Thirty-six growing barrows (initial BW: 22.0 ± 3.85 kg) were placed in metabolism cages and allotted to a randomized complete block design with four diets and nine pigs per diet. Feces and urine were collected for five days after a five day adaptation period. The ATTD and concentrations of DE and ME were calculated in fish meal and the two soybean meals using the difference procedure. Results indicated that the ATTD of energy in SBM was 91.1% which was greater (P < 0.001) than in corn (88.0%) and fish meal (84.1%), and the ATTD of energy in FSBM (89.4%) was greater (P < 0.001) than in fish meal. The concentrations of DE and ME in SBM were 4,608 and 4,144 kcal/kg DM, which was greater (P < 0.001) than the DE and ME in FSBM (4,223 and 3,678 kcal/kg DM, respectively), corn (3,921 and 3,768 kcal/kg DM, respectively), and fish meal (3,819 and 3,361 kcal/kg DM, respectively). However, FSBM contained more (P < 0.001) DE than corn and fish meal and more (P < 0.001) ME than fish meal. In conclusion, the concentration of DE and ME for SBM was greater than those found in FSBM, corn or fish meal.