An attempt has been made to synthesize dicalcium phosphate in nano particle size (NDCP) using Sol-Gel method, characterize and examine it on feeding broiler chicks compared with the conventional dicalcium phosphate (CDCP). Two samples of NDCP were synthesized using deionized water or ethanol as a solvent. The synthesized NDCP was characterized by means of fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM) and Energy Dispersive Analysis by X-ray (EDAX). A broiler growth experiment was designed to investigate the effect of using NDCP on growth performance, carcass characteristics, bone measurements and Ca and P excretion. Anumper of 280 one-day old (Ross 308) male broiler chicks were divided into seven treatment groups received three levels of either CDCP or NDCP being 1.75%, 1.31 and 0.88% and less level of NDCP being 0.44 % of NDCP. These levels represent 100, 75, 50 and 25% of the recommended P requirement. The experiment lasted 26 days. The results indicated that using ethanol solvent resulted in 81.8% NDCP and 18.2% calcium carbonate, but deionized water solvent gave 100% NDCP. The mean crystal sizes of NDCP synthesized using deionized water or ethanol as a solvent was 26 nm and 34 nm, respectively. The NDCP synthesized using deionized water as a solvent was better than that synthesized by ethanol in purity, size and cost of synthesis. The proposed method is environmentally friendly, economic, time-saving and could be performed at room temperature. Birds fed different levels of NDCP gained significantly (P<0.05) more body weight and utilized feed more efficiently than the control group that fed 1.75% CDCP. Using NDCP instead of CDCP increased (P<0.001) BWG and FI by about 25% and 10%, respectively. Values of FCR improved (P<0.001) from 1.53 to 1.35 (12%) for birds fed CDCP and NDCP, respectively. Tibia ash %, Ca%, and P% decreased with decreasing level of dietary CDCP. On the other hand, decreasing dietary level of NDCP did not affect such bone parameters. Feeding NDCP, improved tibia ash %, Ca% and P% by 9.43% 9.60 and 23.8 % compared with feeding CDCP. Decreasing dietary level of CDCP showed decreased bone mineral density (BMD) of tibia. Decreasing dietary level of NDCP from 1.75 to 0.88% did not affect BMD. The excreted Ca and P significantly (P<0.001) decreased with decreasing dietary DCP level. Feeding diet of 0.44% NDCP decreased the excreted Ca and P by 50.74 and 46.24%, respectively, than the control diet. Birds fed diets contained 0.88 or 0.44% NDCP which present 50 or 25% of the requirements did perform as well as those fed diet contained 1.75% CDCP (100% of the requirements) with no adverse effect upon performance, carcass characteristics and bone measurements. Using NDCP in broilerdiets successfully allow to reduce the dietary DCP by 75%.