Keyword Planner has replaced Keyword Tool

With Keyword Planner, we've combined the functionality of Keyword Tool and Traffic Estimator to make it easier to plan search campaigns. That's why Keyword Tool is no longer available. You can use Keyword Planner to find new keyword and ad group ideas, get performance estimates for them to find the bid and budget that are right for you, and then add them to your campaigns.

Other changes in the data columns

In Keyword Planner, you'll notice several different data columns than those that you were used to seeing in Keyword Tool. Here are the differences:

Local monthly searches and global monthly searches: These two columns have been replaced by the "Average monthly searches" column, simplifying the search volume data you can get. The average monthly search volume is specific to your targeting settings, and you can get data for an entire country or individual cities and regions within a country. Note that you can still get global monthly search data by targeting all locations.
Ad share: This column is being replaced with a new column called ad impression share to help you look for potential impressions.
Google Search Network: This column has been replaced by the network option within the targeting settings. To get data for the entire Search Network, select the "Google and search partners" targeting option.
Search share: This column has been retired.
Approx. CPC (Search): This column has been replaced by the "Avg. CPC" column. You'll get more accurate data in the average cost-per-click column than you did in the approximate cost-per-click column.
Local search trends: This column doesn't appear in the Keyword Planner interface. However, you can still get search volume trends by hovering over the icon in the "Avg. monthly searches" column. You can also see these trends segmented by month when you download your historical statistics from Keyword Planner.
Extracted from webpage: This column has been removed from the Keyword Planner interface. However, you can still get the webpage the keyword idea came from when you download your historical statistics from Keyword Planner. Note that you'll only get this data when you search for keyword and ad group ideas based on a URL, like a webpage on your website.

Using Keyword Planner to get keyword ideas and traffic estimates

Keyword Planner is like a workshop for building new Search Network campaigns or expanding existing ones. You can search for keyword and ad group ideas, see how a list of keywords might perform, and even create a new keyword list by multiplying several lists of keywords together. A free AdWords tool, Keyword Planner can also help you choose competitive bids and budgets to use with your campaigns.

Whether you're new to online advertising or an experienced pro, you can use Keyword Planner to lay the groundwork for a successful campaign.

As you get started with Keyword Planner, we recommend learning more about the following:

Benefits of using Keyword Planner
How to use Keyword Planner for keyword research
How to use Keyword Planner to get traffic estimates and save keywords to your account

Benefits of using Keyword Planner

Keyword Planner makes the process of building a new Search Network campaign or refining an existing campaign more efficient. The tool gives you greater insight into which keywords, ad groups, bids, and budgets you may want to use.

Research keywords. Need help finding keywords to add to a new campaign? Or, maybe you want to find additional keywords to add to an existing campaign. You can search for keyword and ad groups ideas based on terms that are relevant to your product or service, your landing page, or different product categories.
Get historical statistics and traffic estimates. Use statistics like search volume to help you decide which keywords to use for a new or existing campaign. Get estimates, like estimated clicks, to get an idea of how a list of keywords might perform for a given bid and budget. These estimates can also help guide your decision on which bids and budgets to set....!?>