GOAT Lab Guides
In-depth articles on how our calculators work and the ideas behind them.
- 3D Printing Cost Breakdown: What a Print Really Costs
- Actual Age vs. Traditional Age vs. School Year: The April 1 Cutoff
- Aquarium Water Volume and Cycling: Specific Gravity and Real Capacity
- BMI's Formula and Its Limits: Why Muscle Mass and Age Matter
- Business Days vs. Holidays: How the Math Works
- Filament Density and Weight: PLA vs. ABS vs. PETG
- Hyperfocal Distance Explained: Aperture, Focal Length, and the Formula
- ISO Week Numbers Explained: The Thursday Rule and Year-Crossing Weeks
- How Leap Years Work: The 4/100/400 Rule and Date Math
- SI Prefixes Explained: When to Use k, M, G, m, µ, and n
- Choosing an ND Filter and Calculating Exposure
- Percentage Calculation Basics: Increases, Discounts, and the Base Value
- Barbell Plate Loading: Bar Weight and the Symmetry Rule
- Unit Conversion Basics: Common Mistakes to Avoid
- Converting Between Wareki and Gregorian Years