# Describe it. Get the formula, explained.

> You need a formula you half remember, and the model is due in an hour.

Source: https://plexiidesk.com/use-cases/describe-it-get-the-formula-explained
For: Finance analyst
How it feels: Inadequacy. What you want instead: Capable.
Updated: 2026-10-16

## The problem

Searching forums for the right lookup syntax while the deadline approaches makes you feel slow.

## How Plexii handles it

Describe the calculation in plain words; Sheets AI writes the formula for the cell you are on, explains it and adds any columns it needs, previewed first.

This uses Plexii’s AI, which runs on Plexii credits or your own Anthropic key.

In short: Stop searching for the syntax. Say what you want to work out, and Plexii writes the formula, explains how it works and shows you a preview first.

## Step-by-step guides

- [Describe a calculation, get a formula](https://plexiidesk.com/help/sheets-ai-formula)
- [Formulas, functions and named ranges](https://plexiidesk.com/help/sheets-formulas-and-functions)

Screenshot: https://plexiidesk.com/usecase-assets/shots/sheets-ai-formula.8ef8c83a71.webp (A screenshot of the real app, with sample data.)