Have a question, suggestion, or just want to say hi? We'd love to hear from you. Our team reads every message.
We regularly add new calculators based on user feedback and requests. Email us with your suggestion!
Yes! Calcosmos is 100% free and ad-free forever. No premium tiers, no catches.
No. All calculations happen locally in your browser. We don't collect, store, or transmit any of your data.
Once loaded, most calculators work offline. Just open the site once, and you're good to go!
We use JavaScript's native number precision. For financial calculations, we round to appropriate decimal places.
Yes! Check out our GitHub repository for the source code. Feel free to contribute or fork it.
Can't find the answer you're looking for? Please send us a message from the form above.
Try Our Calculators