Since 1960, the Pittsburgh Steelers have the highest winning percentage by a team, winning 57.7 percent of the time.

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best winning percentage by nfl team since 1960
SteelersPackersCowboysRavensPatriotsDolphinsVikingsChiefsColts49ersBroncosRaidersSeahawksEaglesRamsChargersBearsWashingtonTitansGiantsPanthersBillsSaints.577.571.570.568.563.551.544.539.533.531.529.522.515.504.502.499.494.493.489.484.480.476.467
TEAMGPW%WLTTDPTSPPGOPP PTSOPP PPG1DWN3DWN%4DWN%
Pittsburgh SteelersPittsburgh Steelers941.577537393112,32420,36021.617,96819.117,573
Green Bay PackersGreen Bay Packers942.571530397152,49221,14722.418,54119.717,654
Dallas CowboysDallas Cowboys941.57053340262,51621,47222.818,90520.118,317
Baltimore RavensBaltimore Ravens411.56823317719919,19822.47,79119.07,84438.551.0
New England PatriotsNew England Patriots944.56352740892,48821,40822.719,20120.318,001
Miami DolphinsMiami Dolphins860.55147238442,12218,30821.317,35520.216,059
Minnesota VikingsMinnesota Vikings929.544500418112,39620,62922.219,16120.617,650
Kansas City ChiefsKansas City Chiefs943.539502429122,41921,00522.319,08120.217,631
Indianapolis ColtsIndianapolis Colts942.53349943762,38920,61321.920,15121.418,052
San Francisco 49ersSan Francisco 49ers941.531494436112,46321,01722.319,38120.617,895
Denver BroncosDenver Broncos943.529494439102,36920,62521.920,26621.518,029
Las Vegas RaidersLas Vegas Raiders943.522487445112,38620,38721.620,54821.817,411
Seattle SeahawksSeattle Seahawks719.51537034811,79815,50821.615,10621.013,471
Philadelphia EaglesPhiladelphia Eagles942.504468460142,31319,91821.119,65320.917,395
Los Angeles RamsLos Angeles Rams941.502466463122,31320,11921.419,92221.217,276
Los Angeles ChargersLos Angeles Chargers943.499465467112,48321,08822.420,47921.718,185
Chicago BearsChicago Bears941.49446147372,08018,14419.318,74519.916,307
Washington Football TeamWashington Football Team941.493457471132,24719,57620.819,92521.217,230
Tennessee TitansTennessee Titans944.48945947962,30919,93521.120,72822.017,122
New York GiantsNew York Giants941.48445148192,18519,00620.219,88621.117,139
Carolina PanthersCarolina Panthers428.48020522211,0029,03421.19,22321.57,96737.947.9
Buffalo BillsBuffalo Bills943.47644549082,20319,07720.219,95021.217,017
New Orleans SaintsNew Orleans Saints845.46739244852,08718,01921.318,99122.515,975
Cleveland BrownsCleveland Browns894.45740448192,03517,57319.719,05221.315,816
Cincinnati BengalsCincinnati Bengals831.44837045651,99417,26320.818,27222.015,530
Arizona CardinalsArizona Cardinals941.444410515162,17518,75319.921,26922.617,161
New York JetsNew York Jets943.44241352282,15518,90520.020,97022.216,955
Atlanta FalconsAtlanta Falcons859.43937447961,97517,30720.119,47222.715,658
Houston TexansHouston Texans315.43513717807266,55620.87,28823.16,00538.152.4
Detroit LionsDetroit Lions941.425391533172,13618,82220.020,45321.716,704
Jacksonville JaguarsJacksonville Jaguars427.41917924809498,52520.09,40222.07,98037.948.6
Tampa Bay BuccaneersTampa Bay Buccaneers719.39828643211,52713,43818.715,60021.712,731