Blog
Stories, facts, and insights about units and conversions.
AI API Costs Explained: What You Actually Pay for GPT, Claude & Gemini
Understand how AI API pricing works, what tokens cost, and how to estimate your monthly AI expenses before they surprise you.
AI Tokens Explained: The Currency of Large Language Models
What are tokens in AI? Learn how tokenization works, why it matters for costs and context limits, and how to estimate tokens for your text.
AI Context Windows: Why Size Matters (and What It Costs)
From 32K to 2 million tokens — learn what context windows are, how they affect AI capabilities, and what filling one actually costs.
How Much Energy Does AI Actually Use? The Numbers Behind the Hype
From a single ChatGPT query to training GPT-4 — the real energy numbers behind AI, with comparisons that put them in perspective.
The AI Business Case: How to Calculate ROI Before You Invest
A practical framework for calculating AI return on investment, comparing build vs buy options, and finding your break-even point.
CO2 Footprint: How Many Trees Do You Need?
Learn how carbon offsetting works, how much CO2 trees actually absorb, and practical steps to reduce your carbon footprint.
What Jeff Bezos Earns in One Second
Exploring billionaire wealth through the lens of earning speed — what Jeff Bezos makes per second and what that means in perspective.
ASCII Art: From Terminals to Digital Art Form
Explore the history of ASCII art from its origins on early computer terminals through the BBS era to its modern revival.
Binary, Hex, Octal: Number Systems Explained
Learn how computers use binary, why hexadecimal exists, and how different number systems work with practical examples.
Your Heart Has Beaten Billions of Times: Amazing Cardiac Facts
Discover how many times your heart beats in a lifetime, how it compares to animals, and other fascinating cardiac statistics.
The Big Mac Index Explained: Economics You Can Eat
How a simple hamburger became one of the most famous tools in economics. Learn how The Economist's Big Mac Index measures purchasing power across the world.
Dog Years: The Myth Behind the 7:1 Formula
The popular '1 dog year = 7 human years' rule is wrong. Learn the real science behind how dogs age and why size matters more than you think.
Morse Code: The Original Text Message
From Samuel Morse's telegraph to modern-day uses, discover the fascinating history of Morse code and why it still matters today.
Everything Measured in Saarland: Germany's Favorite Unit of Area
Why do Germans measure everything in Saarlands? Discover the origin of this quirky tradition, hilarious real-world examples, and how big things really are in Saarland units.
How Many Döner Is Your Salary Worth?
Discover how Döner kebab prices have changed across Germany, the economics behind your favorite fast food, and how many Döner your salary can actually buy.
Metric vs Imperial: A Tale of Two Systems
Why does the world use two different measurement systems? Explore the history and ongoing battle between metric and imperial units.
Anders Celsius: The Man Who Measured Temperature Backwards
Learn about the Swedish astronomer who invented the Celsius scale - and why he originally put boiling at 0° and freezing at 100°.
The History of the Meter: From Revolution to Universal Standard
Discover how the meter was invented during the French Revolution and became the world's most important unit of length.