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Setting up PayPal payment button

Adding PayPal payment button is an easy and effective ways to start accepting payments directly from your website. Let your website visitors to calculate exact price of your product or service and pay you using secure and reliable PayPal service.

Please note that this article describes how to set up your PayPal payment button for real payments. If you want to ensure that your PayPal button works correctly, you can test it using the PayPal Sandbox environment. See Testing PayPal payment button before accepting real payments for more information about it.

Step 1 | Retrieve PayPal Production Key:

  1. Open
  2. Click Log into Dashboard button.
  3. Log in with your PayPal business account.
  4. Click My Apps & Credentials.
  5. Under REST API apps, click Create App button (if you already have the app created, click on it and jump to step 7).
  6. Enter an App Name (it might be your business name, our website address or any other name) and click Create App button.
  7. Select the Live tab at the top-right corner.
  8. Copy your Client ID.

Step 2 | Set up your payment button:

  1. Login to your Calconic account
  2. Click My Calculators at the left side menu.
  3. Select the calculator you want to add a payment button.
  4. Click + icon.
  5. Click Payment button.
  6. Toggle the switch below Environment label to Production position.
  7. Paste your PayPal Client ID to PayPal Production Key input field.

Payment button tool has additional customization options, see Customizing Payment button page for more information.