ある文字が，文字コードごとにどんなビット列に対応するか

1文字あるいは短い文字列を入力し、「変換」ボタンをクリックしてください。


(UTF-8)
文字コード 文字 ビット列（2進表現） ビット列（16進表現）
ISO-8859-1 ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B?????????????????????????????????????????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B?????????????????????????????????????????????????????T??B????????? 00111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010101000011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101001110001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
SJIS-WIN ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛?????瀛???????渦????獄????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛?????瀛???????渦????獄????????????????T??B????????? 0011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111100010010101000100111111001111110011111100111111001111110011111100111111001111110011111100111111111000000110100100111111001111110011111100111111001111111110000001101001001111110011111100111111001111110011111100111111001111111000100101010001001111110011111100111111001111111000110110010110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101010000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010011100011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111000100101010001001111110011111100111111001111110011111100111111001111110011111100111111001111111110000001101001001111110011111100111111001111110011111111100000011010010011111100111111001111110011111100111111001111110011111110001001010100010011111100111111001111110011111110001101100101100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f89513f3f3f3f3f3f3f3f3f3fe0693f3f3f3f3fe0693f3f3f3f3f3f3f89513f3f3f3f8d963f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f89513f3f3f3f3f3f3f3f3f3fe0693f3f3f3f3fe0693f3f3f3f3f3f3f89513f3f3f3f8d963f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
EUC-JP ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛?????瀛???????渦????獄????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛?????瀛???????渦????獄????????????????T??B????????? 0011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111101100011011001000111111001111110011111100111111001111110011111100111111001111110011111100111111110111111100101000111111001111110011111100111111001111111101111111001010001111110011111100111111001111110011111100111111001111111011000110110010001111110011111100111111001111111011100111110110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101010000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010011100011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111011000110110010001111110011111100111111001111110011111100111111001111110011111100111111001111111101111111001010001111110011111100111111001111110011111111011111110010100011111100111111001111110011111100111111001111110011111110110001101100100011111100111111001111110011111110111001111101100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fb1b23f3f3f3f3f3f3f3f3f3fdfca3f3f3f3f3fdfca3f3f3f3f3f3f3fb1b23f3f3f3fb9f63f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fb1b23f3f3f3f3f3f3f3f3f3fdfca3f3f3f3f3fdfca3f3f3f3f3f3f3fb1b23f3f3f3fb9f63f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
UTF-8 ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛뺶????瀛뺶??????渦????獄쌎???????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛뺶????瀛뺶??????渦????獄쌎???????????????T??B????????? 001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111111100110101110001010011000111111001111110011111100111111001111110011111100111111001111110011111100111111111001111000000010011011111010111011101010110110001111110011111100111111001111111110011110000000100110111110101110111010101101100011111100111111001111110011111100111111001111111110011010111000101001100011111100111111001111110011111111100111100011011000010011101100100011001000111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100111000111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111111100110101110001010011000111111001111110011111100111111001111110011111100111111001111110011111100111111111001111000000010011011111010111011101010110110001111110011111100111111001111111110011110000000100110111110101110111010101101100011111100111111001111110011111100111111001111111110011010111000101001100011111100111111001111110011111111100111100011011000010011101100100011001000111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 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
UHC ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛뺶????瀛뺶??????渦????獄쌎???????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????渦??????????瀛뺶????瀛뺶??????渦????獄쌎???????????????T??B????????? 0011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111111010001011111000111111001111110011111100111111001111110011111100111111001111110011111100111111111001111011101010010101111111010011111100111111001111110011111111100111101110101001010111111101001111110011111100111111001111110011111100111111111010001011111000111111001111110011111100111111111010001010101110011010111111010011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101010000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010011100011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111110100010111110001111110011111100111111001111110011111100111111001111110011111100111111001111111110011110111010100101011111110100111111001111110011111100111111111001111011101010010101111111010011111100111111001111110011111100111111001111111110100010111110001111110011111100111111001111111110100010101011100110101111110100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe8be3f3f3f3f3f3f3f3f3f3fe7ba95fd3f3f3f3fe7ba95fd3f3f3f3f3f3fe8be3f3f3f3fe8ab9afd3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe8be3f3f3f3f3f3f3f3f3f3fe7ba95fd3f3f3f3fe7ba95fd3f3f3f3f3f3fe8be3f3f3f3fe8ab9afd3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f

SJIS-Win,EUC-JP: Windows(SJIS-Win=CP932)、UNIX(EUC-JP)で日本語扱うための文字コード。