Calculate total, generate a URL, etc.

Include formula fields in your miniExtensions form! For example, show a calculated total or generate a URL. Let your employees/customers see their input’s results immediately. You can enable this feature by turning on ‘Compute Mode‘ in your form’s settings.


Here is a form that has a formula field to show the order’s total.

💡 Tip

You can combine this feature with our Stripe integration to build an entire checkout solution with payment!

Use Cases

This extension can be useful in a lot of scenarios. You can use it to build:

  • Invoice/estimate
  • Shopping cart
  • URL generator.
  • Data validator

If you click on the sample view below, you’ll see the table that’s used for the demo above.


Supported features

Third Party Integration

6 Questions
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Site visitor
Site visitor
10 months ago

The secondary line item form has calculation mode on, but the calculation it shows on the form is based on a rollup value from the main record. When the form is submitted, the calculation works well. But when calculated before submission, it behaves as if it was not linked to the main record. Is this the normal expected behavior?

Site visitor
Site visitor
10 months ago

We are planning to use this extension to present real estate listings. We want to add live calculator containing the data from Airtable.

Site visitor
Site visitor
8 months ago

I switched on the Computed field which contains a formula from Airtable. But a new record gets created when it is only computed in the form. Before I see the success message.


Most frequent questions and answers

You can use the subscription on different bases/accounts. It covers universal access to all of our extensions which extensions can be setup for multiple bases and tables. We explain how many Airtable bases you can use on our pricing page.


On paid plans, there’s no limit on the number of records you can process. Unlike Zapier and Integromat, our pricing is per month, not per record. However, there might be limitations by third party integrations.


We have instructional videos for how to use each one of our extensions on the product page. They guide you step-by-step of how to set them up.


We’re not offering discounts at this time. And we don’t require any commitment.


Unfortunately, we only offer plans that provide unlimited access to all of our extensions.


Yes. Submit your request here and we will get back to you as soon as we can.