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Articles & Guides
20 free practical guides covering cooking, math, image tools, web design, golf, and more.
Kitchen
๐Ÿฅ„ Kitchen
Cooking Measurement Conversions: The Complete Guide
Convert cups to ml, tablespoons to teaspoons, ounces to grams, and everything in between.
5 min read
๐Ÿฅ„ Kitchen
How to Scale a Recipe for Any Number of Servings
The simple math behind scaling recipes up or down, and which ingredients need special attention.
4 min read
๐ŸŒก๏ธ Kitchen
Oven Temperature Guide โ€” Fahrenheit, Celsius & Gas Mark
Complete conversion table plus recommended temperatures for baking, roasting, and cooking.
4 min read
๐Ÿฅ„ Kitchen
Cups to Grams โ€” Complete Baking Reference
Convert cups to grams for flour, sugar, butter, and other common baking ingredients.
5 min read
๐Ÿฅ„ Kitchen
How to Read a Nutrition Label โ€” Complete Guide
Understand serving sizes, daily values, macronutrients, and how to compare products accurately.
6 min read
Math
% Math
How to Calculate Percentages โ€” Complete Guide
All three percentage formulas with real examples โ€” tips, discounts, tax, grade scores, and more.
6 min read
% Math
How to Calculate a Tip โ€” Quick & Easy Guide
Mental math tricks, a full tip reference table, tipping etiquette, and how to split a bill.
4 min read
% Math
How to Calculate Sales Tax on Any Purchase
Formula, state tax rates, reverse-calculating pre-tax prices, and VAT vs sales tax explained.
5 min read
% Math
How to Calculate Compound Interest
The compound interest formula, the Rule of 72, and how compounding works for and against you.
6 min read
๐Ÿ“ Math
Unit Converter Guide โ€” Length, Weight, Speed & Area
Complete metric to imperial conversion guide with quick reference tables and formulas.
6 min read
๐Ÿ“ Math
The Metric System Explained โ€” A Beginner's Guide
Base units, prefixes, how to convert within metric, and why most of the world uses it.
6 min read
๐ŸŒก๏ธ Math
Celsius to Fahrenheit โ€” Formula, Chart & Quick Tips
The exact formula, mental math shortcuts, a full temperature reference chart, and Kelvin explained.
5 min read
% Math
How to Calculate BMI โ€” Formula, Chart & Limitations
The BMI formula in metric and imperial, what the categories mean, and why BMI has limits.
5 min read
๐Ÿ“ Math
How to Read a Ruler in Inches and Centimeters
Step-by-step guide to reading fractional inches, millimeters, and measuring objects precisely.
5 min read
๐Ÿ“… Math
How to Calculate Age & Days Between Dates
How age is calculated, counting days between dates, and leap year rules explained.
5 min read
Image
๐Ÿ–ผ๏ธ Image
JPG vs PNG vs WebP โ€” Which Format Should You Use?
Understand the differences, when to use each format, and how much file size you can save.
5 min read
๐Ÿ–ผ๏ธ Image
How to Resize & Convert Images for Web
Standard image dimensions by use case, resizing without distortion, and quality tradeoffs.
5 min read
๐ŸŽจ Design
Color Codes for Web Design โ€” HEX, RGB, HSL & CSS Guide
When to use HEX, RGB, and HSL, how to build accessible color systems, and CSS color tips.
6 min read
Fun & Extra
โ›ณ Golf
Understanding Your Golf Handicap Index
How the USGA Handicap Index is calculated, score differentials, and what your index means.
5 min read
โ›ณ Golf
How to Calculate Your Golf Handicap from Scratch
Step-by-step walkthrough of score differentials, the 0.96 multiplier, and worked examples.
6 min read