The Google Traffic Estimator tool is designed to give you keyword search traffic and cost estimates at a glance. Simply enter the keywords, budget parameters and regions to find the cost, clicks and position of your ads. To use the Google Traffice Estimator, follow these simple steps:
1) Open the AdWords Estimator Tool
2) Insert one keyword per line
3) Be sure to set up your geographical target and language (this is extremely important to get useful results!)
4) Within the columns add the competition and local search trends so that you can view this information as well.
This tool is free to use and often when you sign in with your Google account additional terms will be suggested by Google, if relevant.