The Bid Optimizer tool is located in the box right below these instructions. Simply fill the 5 required fields then click on the calculate bids button. Graphs will be plotted and your most profitable bids will be in bold.
Here are the complete instructions:
Step 1 - Identify Bid To Optimize
Log into your adwords account and identify the keyword bids you want to optimize. They should have enough data so that the bid simulator is active. Learn more about the bid simulator here.
Step 2 - Copy Prediction Data From Bid Simulator
The Bid Simulator predicts the number of clicks, impressions and your total costs depending on how you bid. Copy the estimated data in a text file.
Step 3 - Get Your Conversion Metrics
Calculate your maximum profitable CPA and your conversion rate. Watch the video above to learn how to calculate them.
Step 4 - Find The Bids That Yield Maximum Profits
In the tool below, enter the data of estimated bids, clicks, costs and conversions in their corresponding fields. The order doesn't matter, separate values by a comma then click on "calcuate bids". A table will appear with 3 lines and several columns, the bids that yield max profitability will be in bold in the Bids line. The graphs are simple representations of the data generated in the table.
Step 5 - Create A Campaign Experiment
You are not 100% sure that the predictions are accurate, that's why you should test before adopting them. Learn about campaign experiments here.