Goodfolk Toolbox Blog
Helpful guides for everyday tools.
Practical guides, examples, and planning tips for using free calculators and utilities across travel, health, business, finance, design, development, home, camp, office, and student life.
Latest Guides
Read a guide, then use the tool.
Each guide is written to explain the idea, show a simple example, and point you toward the matching Goodfolk Toolbox calculator.
Health Guide
How Much Water Should You Drink Per Day?
Learn what affects daily water needs, including body weight, activity, weather, and caffeine or alcohol intake.
Read guide →Travel Guide
How to Plan a Trip Budget Without a Spreadsheet
Learn how to estimate transportation, lodging, food, activities, and travel buffers without building a spreadsheet.
Read guide →Business Guide
How to Calculate Profit Margin and Markup
Understand the difference between profit margin and markup so your pricing math does not get weird.
Read guide →Travel Guide
How to Build a Simple Packing List Before Travel
Build a practical packing list based on trip length, weather, destination type, laundry access, and travel style.
Read guide →Design Guide
How to Choose Colors for a Small Website or Brand
Use a base color, contrast, palette balance, and reusable CSS values to choose better website colors.
Read guide →