O-calc

O-calc.com provides several usefull tools to calculate various costs in Ogame universe.
Among them are:

• calculate how many points is your colony worth
• flight time calculator
• buildings, researches, fleet and defense costs
• graviton technology research costs
• fleet costs
• resource production calculator

and several other tools.
O-calc is a free tool, available in different languages - English, German, Spanish, French, Dutch, Italian, Croatian, Polish, Turkish and Portugese, and is being used by thousands of players every day.