Different ways to drill the kana until reading them is automatic.
See the kana and type its romaji.
Choose the matching kana from romaji, or the romaji from kana.
Match hiragana and katakana pairs.
Practice writing kana by hand - browse by row, or write a random character from its romaji.
Read a kana sentence and type its romaji.
Hiragana
Katakana
Combined chart
Exercise