Gemini to Google Sites: test a calculator for your shop

Forty-nine guests need seven tables if you seat eight at each one. A customer planning a party might round down to six. If you run an event-rental business in Brownsburg, you have probably explained the seventh table more than once.

I would try a small calculator for that question. On October 19, 2026, Google announced an export from Gemini to Google Sites: you can take an interactive app you built in Gemini and open it as a private site draft. You choose when to publish it.

For an owner, that's a useful way to try one customer tool. Start with a calculation you can check on paper. Keep reservations and payments in the systems you already trust.

What could your business calculate for a customer?

The table example needs two inputs: the number of guests and seats per table. Divide the first by the second, then round up to the next whole table. You can explain that rule to a customer in one breath.

An event-rental owner could ask Gemini to build a phone-friendly calculator using that rule. Ask for whole-number inputs, clear labels, and an error message when someone enters zero seats per table. Include a note that customers still need to confirm table sizes and availability with you.

The customer should see seven tables for 49 guests at eight seats each. They should also see seven for 56 guests, then eight for 57. Those three checks catch a rounding mistake that could leave somebody standing at dinner.

You can borrow the scope question from our working-app build process: what is the single thing this tool needs to do? For this example, I would stop at a table count. Adding a delivery calendar would mean checking vehicle schedules and staff availability, a much bigger job.

How do you move a Gemini app into Google Sites?

In Gemini, choose Export > Google Sites on your app to open an editable draft. Google lists availability on phones and the web, including personal accounts with Gemini access.

For a work account, your administrator must allow Google Sites and site creation. Existing Sites and Drive policies still apply.

Add your business name and a sentence explaining the result. Put a phone number or a link to your existing inquiry page beside it. I would label the table tool “Plan your table count” so customers understand that they still need to place an order.

Use Google Sites' preview and sharing controls before you send anyone the link. Google lets you choose Restricted or Public access for a published site, though work accounts may show different options. A draft that opens for you can still be inaccessible to your customer.

How do you check the calculator before sharing it?

Write down the expected answers before you ask Gemini to build anything. Otherwise, you might accept a polished result because you haven't done the arithmetic yourself.

A garden-supply yard in Franklin could use a similar tool to estimate loose material for a rectangular bed. For a demonstration, take a bed 12 feet long and 9 feet wide, filled 3 inches deep. Convert the depth to 0.25 feet. Multiply those dimensions to get 27 cubic feet, or 1 cubic yard.

That example checks units, as well as multiplication. If someone enters 3 inches and the tool treats it as 3 feet, you will quote twelve times the volume. Choose your usual depth and ordering allowance; don't let Gemini invent those recommendations.

Before you publish either example, try these checks:

• Enter the cases you solved on paper and compare the results.
• Clear a required field. Enter zero and a negative number. The app should ask for a valid input instead of showing a usable-looking answer.
• Change an input after getting a result. Confirm that the displayed answer updates.
• Open the published link on your phone while signed out. Check access and tap through the inputs with your thumb.

Our fifteen-minute website check covers the surrounding journey, including whether a customer can reach you after using the tool. Test the inquiry link as part of this pass.

Before a customer uses your calculator, check its answers against examples you have worked out yourself.

I would set aside 30 minutes for the first draft and its arithmetic checks. If you keep correcting the same mistake, save the draft and ask someone to inspect the calculation. For a tool that needs to connect to stock or bookings, our services page explains the custom-software work we take on.

Pick the question you answered twice at the counter yesterday. Write the correct answer on paper before you open Gemini.

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Sources

#	Source	What it backed up
1	Google Workspace: Export interactive apps from Gemini to Google Sites	The October 19, 2026 export announcement, private draft, availability, and administrator requirements.
2	Google Sites Help: Publish and share your site	Previewing a site and choosing access for the published page.
3	Luminest: How we ship a working app in 7 days	Our approach to limiting a first version to one core task.
4	Luminest: The fifteen-minute website check	Checking the customer's path through a website and its contact options.