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The Foundry Blog

Sharper formulas. Cleaner sheets.

Insights, tutorials, and updates from the team building the future of spreadsheet development.

Person reviewing a spreadsheet template on a laptop at a desk
6 min read

AI Excel template generator: overlooked checks before you trust it

An AI tool can draft a spreadsheet template in seconds. Learn how to prompt for a clean layout and test the formulas before real data goes in.

Spreadsheet with a column of dates beside a wall calendar on a desk
6 min read

Simple date formulas Google Sheets users should learn first

Learn the date formulas Google Sheets users need each week, plus the fix for dates that fail inside QUERY, with formulas you can copy.

Laptop screen showing a bell curve chart on a desk
6 min read

How to make a bell curve in Excel: the overlooked scaling step

Build a bell curve in Excel with AVERAGE, STDEV.S and NORM.DIST, then scale it so it lines up with a histogram of your real data.

Person working on a spreadsheet with a column of AI-generated results next to source comments
6 min read

How to use AI function in Google Sheets and trust the results

Type a prompt into a cell with =AI() or =Gemini(), then use a simple checking routine so the answers hold up. Includes copy-ready examples.

Laptop on a desk displaying a spreadsheet of rows and columns beside a notepad
7 min read

Excel Formula List With Examples for Beginners: Stop Memorizing

A task-based Excel formula list with examples you can copy, plus the reasons a pasted formula fails in your own workbook and how to fix each one.

Laptop with a spreadsheet open beside a printed reference sheet on a desk
7 min read

Excel Formulas Cheat Sheet PDF for Beginners: The Hidden Limits

A cheat sheet PDF saves time, but only if you pick the right formulas, check your Excel version, and avoid copy errors. Here is how to build your own.

A visual representation of data cleaning in excel showing chaotic cells becoming organized.
12 min read

Remarkable Tactics for Perfect Spreadsheets: A Non-Expert Guide

Learn the exact functions and practical steps to fix messy spreadsheets automatically. Stop doing manual corrections and transform chaotic exports into reliable reports today.

A smooth blue symmetrical line chart displayed on a bright computer monitor
13 min read

Proven Methods to Build a Normal Distribution Graph

Learn how to prepare your spreadsheet data, calculate standard deviation, and plot accurate normal distribution charts without being a statistics expert.

A monitor displaying cascading data structures to illustrate how to use array formulas in google sheets.
13 min read

Real Solutions for Scaling Data: How to Use Array Formulas in Google Sheets

Learn how to replace thousands of repetitive cell calculations with a single master formula, preventing manual errors and scaling your data workflows effortlessly.

A secure approach to generating spreadsheet formulas using automation tools without exposing data.
19 min read

Stop Hand-Coding: Why the Best Free AI for Excel Formulas Protects Your Private Data

Discover why pasting your raw spreadsheet data into web bots is a massive security risk, and learn how to use syntax generators safely to write complex spreadsheet logic without exposing your numbers.

Abstract representation of data cleaning in a modern spreadsheet environment.
16 min read

Effective Data Cleaning: 7 Ways to Master How to Use Google Sheets AI Functions

Learn how to practically deploy native workspace intelligence to clean messy data, summarize text, and troubleshoot common formula errors.

Grid of data cells connected by logical processing paths
16 min read

Effective Methods for Accurate Spreadsheet Syntax

Struggling with syntax? An automated generator translates plain English into working functions. Learn how to generate, validate, and troubleshoot your spreadsheet logic.