http://doomeer.com/factorio http://doomeer.com/factorio does that. You can specify how many of each product you want to produce per second, minute or hour and i

http://doomeer.com/factorio http://doomeer.com/factorio does that. You can specify how many of each product you want to produce per second, minute or hour and it shows how many assemblers and what raw material production is required.