Fun Calculators
25 fun, shareable calculators that turn your body weight into something more interesting. How many cats do you weigh? Would a dragon carry you? What\'s your weight on Jupiter? Pick your favourite category.
Planet & Space 5 tools
Your weight across the solar system.
Fantasy & Geek 5 tools
Tolkien, dragons, eagles, hobbits.
Food & Calorie Comedy 5 tools
Your weight in pizza, doughnuts, tea.
Animal Comparisons 5 tools
Cats, corgis, elephants and beyond.
Bonus & Viral 5 tools
T-Rex, zombies, pirates, gold, Santa.
Why these calculators are addictive
The standard BMI or TDEE calculator tells you something practical: how many calories to eat, where you stand on a health chart. The calculators in this section do something different — they translate a boring number (your weight in kilograms) into something visceral and shareable. "I weigh 16 cats" is a sentence you remember. "I weigh 75 kg" isn\'t.
The science under the fun
Despite the playful framing, every calculation here is real. The planet weight calculator uses actual surface gravity values from NASA. The elephant calculator uses verified species mass data from the IUCN. The dragon carry calculator uses the actual 25–30% body-weight rule that applies to real flying animals. The T-Rex calorie calculator uses palaeontological estimates of Tyrannosaurus metabolism scaled from modern reptiles and birds.
How to share these calculators
Got a result that surprised you? These pages are designed for sharing — each one has clean meta tags for Twitter, Facebook and LinkedIn previews. Screenshot your result and post it; the calculator URL takes friends straight to the same tool to try their own.
Looking for serious calculators?
If you want to track your actual nutrition rather than your weight in chocolate bars, see the main calculator section. The TDEE, BMR, macro, body fat and BMI calculators are all on the same platform and use the same evidence-based formulas.