For some people, it has always been a hassle to calculate for the exact FLY ON Points (FOPs) you will get when you plan for a mileage run with JAL Mileage Bank (JMB) as JAL did not have a FOP calculator on its website. I use a excel spreadsheet for my FOP calculations and sometimes the results could be off by 1 if it's a new route that I have never flown on before. But all these have changed! Finally JAL has published an official FOP calculator for BOTH Japan region and non-Japan region JMB members in BOTH Japanese and English!

Details and limitations of the calculators are posted on my blog: http://jal-pak.blogspot.com/2011/11/...and-award.html