根據市(shi)(shi)級生產總值統一核算(suan)結(jie)果(guo)，2020年威海市(shi)(shi)生產總值3017.79億(yi)元(yuan)，按可比價格計(ji)算(suan)，增(zeng)(zeng)(zeng)長3.0%。分產業(ye)看，第一產業(ye)增(zeng)(zeng)(zeng)加值301.66億(yi)元(yuan)，增(zeng)(zeng)(zeng)長2.9%；第二產業(ye)增(zeng)(zeng)(zeng)加值1162.27億(yi)元(yuan)，增(zeng)(zeng)(zeng)長2.1%；第三產業(ye)增(zeng)(zeng)(zeng)加值1553.86億(yi)元(yuan)，增(zeng)(zeng)(zeng)長3.7%。全市(shi)(shi)三次(ci)產業(ye)結(jie)構由上(shang)年的9.7:40.4:49.9調整為10.0:38.5:51.5。

2020年(nian)(nian)(nian)，威海市(shi)(shi)農林牧漁(yu)業總(zong)(zong)產值按可比價格計算(suan)增(zeng)(zeng)(zeng)長(chang)3.2%，增(zeng)(zeng)(zeng)速(su)(su)(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)2.6個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)規模(mo)以上(shang)(shang)工業增(zeng)(zeng)(zeng)加值增(zeng)(zeng)(zeng)長(chang)4.6%，增(zeng)(zeng)(zeng)速(su)(su)(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)2.3個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)規模(mo)以上(shang)(shang)服務業營業收(shou)入增(zeng)(zeng)(zeng)長(chang)3.9%，增(zeng)(zeng)(zeng)速(su)(su)(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)0.8個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)固定(ding)資產投資增(zeng)(zeng)(zeng)長(chang)2.9%，增(zeng)(zeng)(zeng)速(su)(su)(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)17.9個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)社會消費品零售(shou)總(zong)(zong)額(e)(e)增(zeng)(zeng)(zeng)長(chang)0.3%，分(fen)(fen)別高(gao)(gao)于全(quan)國(guo)、全(quan)省平(ping)均水(shui)平(ping)4.2和0.3個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)完成一般(ban)公共預(yu)算(suan)收(shou)入252.39億元(yuan)，增(zeng)(zeng)(zeng)長(chang)1.0%，較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)13.2個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)(shi)進出口總(zong)(zong)額(e)(e)1614.57億元(yuan)，增(zeng)(zeng)(zeng)長(chang)15.1%，增(zeng)(zeng)(zeng)速(su)(su)(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)高(gao)(gao)14.3個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)，高(gao)(gao)于全(quan)省平(ping)均水(shui)平(ping)7.6個百(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。