If you mean the word 'grace' itself transliterated into Japanese it would be グレイス /gu rei su/. If you mean an equivalent for it in Japanese you can use 優美 /yuu bi/.
to
グレイス /gu rei su/ is the Japanese equivalent of 'Grace' as a name.
Nabigeetaa.
washi
osutoraria
tsuki
maikaru
kore
Steevann
meron
yoru
saigo