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How many kanji should you learn? How long will it take? The answer might suprise you...

Japanese Relief Fund

You can help the people of Japan recover from the earthquake, tsunami, and nuclear disaster. Donate to the American Red Cross Japanese Relief Fund!


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Search and edit card files

Need to find a kanji? You can peform precise or fuzzy criterion-based searches of the current card file by kanji, readings, mnemonic or meanings. K-Flash shows you all of the kanji's information, plus the deck number so you know which deck to find it in. 

Want to add notes to a kanji card? Customize the mnemonic? Add new readings or meanings? Just make your edits and click "Save Changes," it's that simple.


Create custom card files

K-Flash comes with all of the kanji orgainzed into card files. But you can extract kanji from those files to create your own custom ones!

Create Three Kinds of Card Files


Random: Randomly selects a specified number of cards.

By low score: Selects the cards you're having the most trouble with, so you can work on your weak spots.
By element: Selects all kanji having a specified element. For example, all the kanji containing the radical 月 
(臓, etc.).

Add a Card to Your Custom File on the Fly

While you're studying, if you encounter a kanji that you want to work more on later, you can add it to one of your custom decks. Simply right-click and select "Copy current kanji to deck..."


Deck- and card-level scoring

With deck scoring turned ON, K-Flash shows your ratio of right guess to wrong guesses—updated in real time. Your final score gives you instant feedback on your progress on the current deck. 


With card scoring turned ON, K-Flash stores a tally of right and wrong guesses for each individual kanji card. It uses this information when you create a custom deck based on your lowest scoring cards. 

Show or hide any information

Just like paper flashcards, you don't see the answers until you "flip" the card. But unlike paper flashcards, K-Flash lets you control which information is shown on the answer side of the card. This gives you control over the cards' difficulty and focus. For example, you could hide the meanings but show the mnemonic phrase. Or, if you want to reduce clutter, you could hide the readings. 


Customizable deck sizes

By default, there are 50 flashcards in each deck of the main card file. This is the recommended size based on the amount of cards that a person can typically "digest" at a time. But you can easily change the deck size1—beginners may prefer smaller decks at first, and advanced users may want the challenge of larger decks.

1. All decks in a card file must be the same size.

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