Navigate to the Google Maps Platform and click on the Get Started button in the top right corner of the site.
Enable Google Maps Platform
Select the Maps, Routes and Places check boxes and press continue.
Select a Project
If this is your first time creating an API key, you will have to create a Project first.
- Give your Project a name.
- Click the next button at the bottom-right of the window.
Set up your billing
Wait for the billing prompt and select Create Billing Account
Enter a name for you Billing Account, as well as your Organization name.
Enter your customer info (details) and card information.
Select Submit and enable billing.
Please note that you will get up to 28000 map requests per month and 40000 direction calls per month, free of charge. You will only be billed when your usage exceeds your monthly $200 credit limit.
Once your billing has been set up, you can move onto creating your API Key.
Create API Credentials
Click on the Credentials option on the API Manager menu in the right sidebar.
Click on the Create Credentials button on the Credentials window
Generate Your API Key
Click on API Key on the next pop-up window.
- Copy the generated API key to your clipboard.
- Return to your WordPress site and paste the API Key
- Click the Publish button.
After pasting the API Key to your WordPress site and saving the settings, return to the Google API Manager. You will want to restrict access to your API Key to avoid having it “hijacked” and going over your quota. Click the Restrict key button on the API key created window as shown above.
Select HTTP referrers (web sites) and enter the following domains under Accept requests from these HTTP referrers (web sites) replacing yourdomain.com with your domain name:
*.domain.com/* and *domain.com/*
Click the Save button to save your Key Restrictions.
Enable Required API Functions
API Changes Introduced By Google
Recently, Google Maps have announced certain API changes that will affect everyone using Google Maps. Essentially, Google has implemented new pay-as-you-go pricing plans for their API. On this plan mention, users will get up to 28000 map requests per month and 40000 direction calls per month, free of charge.
Other rates and limits found here.