Major Differences 

 
Initials          Finals              Words    
           
ch(i)     j         -ieh      -ie            erh       er
ch(a)*    zh        -ien      -ian           ho        he
ch'(i)    q         -ih       -i             yeh       ye
ch'(a)*   ch        -o,-uo,-o,-uo**          yen       yan       
hs        x         -uei      -ui            yu        you
j         r         -üeh      -ue            yü***     yu,yü
k         g         -ung      -ong  
k'        k         -(z)u     -i
p         b              
p'        p
t         d
t'        t
ts        z
ts'       c
tz        z
tz'       c              

*including a, o, ou, u, etc. (excluding i)
** -o after b, p, m, and f, -uo after other initials
***-ü the umlaut is not used in Pinyin after y,j,q, and x



  General Differences 

 
W-G    Pinyin   W-G     Pinyin      W-G     Pinyin   W-G    Pinyin

cha     zha    ch'ia     qia       chou      zhou    ch'üan  quan
ch'a    cha    chiang    jiang     ch'ou     chou    chüeh   jue 
chai    zhai   ch'iang   qiang     chu       zhu     ch'üeh  que
ch'ai   chai   chiao     jiao      ch'u      chu     chün    jun
chan    zhan   ch'iao    qiao      chua      zhua    ch'ün   qun
ch'an   chan   chieh     jie       ch'ua     chua    erh     er
chang   zhang  ch'ieh    qie       chuai     zhuai   ho      he
ch'ang  change chien     jian      ch'uai    chuai   hsi     xi
chao    zhao   ch'ien    qian      chuan     zhuan   hsia    xia
ch'ao   chao   chih      zhi       ch'uan    chuan   hsiang  xiang    
che     zhe    ch'ih     chi       chuang    zhuang  hsiao   xiao
ch'e    che    chin      jin       ch'uang   chuang  hsieh   xie
chei    zhei   ch'in     qin       chui      zhui    hsien   xian
ch'ei   chei   ching     jing      ch'ui     chui    hsin    xin
chen    zhen   ch'ing    qing      chun      zhun    hsing   xing
ch'en   chen   chiu      jiu       ch'un     chun    hsiu    xiu
cheng   zheng  ch'iu     qiu       chung     zhong   hsiung  xiong
ch'eng  cheng  chiung    jiong     ch'ung    chong   hsü     xu
chi     ji     ch'iung   qiong     chü       ju      hsüan   xuan
ch'i    qi     cho       zhuo      ch'ü      qu      hsüeh   xue
chia    jia    ch'o      chuo      chüan     juan    hsün    xun


 
W-G    Pinyin   W-G     Pinyin     W-G      Pinyin   W-G     Pinyin

hung    hong   k'ua      kua       p'en      pen     t'iao    tiao
i,yi    yi     kuai      guai      peng      beng    tien     dian
jan     ran    k'uai     kuai      p'eng     peng    t'ien    tian
jang    rang   kuan      guan      pi        bi      ting     ding
jao     rao    k'uan     kuan      p'i       pi      t'ing    ting
jen     ren    kuang     guang     piao      biao    to       duo
jeng    reng   k'uang    kuang     p'iao     piao    t'o      tuo
jih     ri     kuei      gui       pieh      bie     tou      dou
jo,je   re     k'uei     kui       p'ieh     pie     t'ou     tou
jou     rou    kun       gun       pien      bian    tuan     duan
ju      ru     k'un      kun       p'ien     pian    tui      dui
juan    ruan   kung      gong      pin       bin     t'ui     tui
jui     rui    k'ung     kong      p'in      pin     tun      dun
jun     run    kuo       guo       ping      bing    t'un     tun
jung    rong   k'uo      kuo       p'ing     ping    tung     dong
ka      ga     lieh      lie       po        bo      t'ung    tong
k'a     ka     lien      lian      p'o       po      tsa      za
kai     gai    lo        luo       p'ou      pou     t'sa     ca
k'ai    kai    lung      long      pu        bu      tsai     zai
kan     gan    lüeh      lüe       p'u       pu      ts'ai    cai
k'an    kan    mieh      mie       so        suo     tsan     zan
kang    gang   mien      mian      sung      song    ts'an    can
k'ang   kang   nieh      nie       ssu       si      tsang    zang
kao     gao    nien      nian      szu       si      ts'ang   cang
k'ao    kao    no        nuo       shih      shi     tsao     zao
ke      ge     nung      nong      ta        da      ts'ao    cao
k'e     ke     nüeh      nüe       t'a       ta      tse      ze
kei     gei    pa        ba        tai       dai     ts'e     ce
k'ei    kei    p'a       pa        t'ai      tai     tsen     zen
ken     gen    pai       bai       tan       dan     ts'en    cen
k'en    ken    p'ai      pai       t'an      tan     tseng    zeng
keng    geng   pan       ban       tang      dang    ts'eng   ceng
k'eng   keng   p'an      pan       t'ang     tang    tso      zuo
ko      ge     pang      bang      tao       dao     ts'o     cuo
k'o     ke     p'ang     pang      t'ao      tao
kou     gou    pao       bao       te        de
k'ou    kou    p'ao      pao       t'e       te
ku      gu     pei       bei       ti        di
k'u     ku     p'ei      pei       t'i       ti
kua     gua    pen       ben       tiao      diao

(Sources from: http://web.mit.edu/afs/athena.mit.edu/user/z/x/zxu/www/cjk/wjpin6.htm)

go to Pinyin to Wade-Giles Table OR Pinyin/Chuyin/ Wade-Giles Table