Thank you for visiting Simple Calculator. We're always happy to hear from our visitors.
Whether you've found a bug, spotted incorrect information, have an idea for a new calculator, or simply want to share feedback, please get in touch. Every message helps us improve the website.
Simple Calculator is developed and maintained by Thomas & Kris, and we personally read every email we receive.
If you prefer, you can email us directly at:
📧 contact@simple-calculator.org
We aim to reply to most enquiries within 24–48 hours. While we can't guarantee an immediate response, every message is reviewed and appreciated.
Our mission is to provide free, accurate, fast and easy-to-use online calculators and converters for everyday life, education, finance, health, engineering and science. Your feedback helps us make Simple Calculator even better.
Quickly access our most popular calculators. Fast, accurate, and free — no signup required.
Browse essential calculators for finance, everyday maths, and scientific calculations — all in one place.
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Built for personal use, now shared for free — simple, fast, and private calculators for everyone.
Last Updated: August 2026