About the Calcopedia
Hi! My name is Evgeny Buyanov, and I am the founder of the project.
Welcome to our Calcopedia, home to the most user-friendly, intuitive, and reliable online calculators available. Whether you're crunching numbers for everyday tasks or tackling complex calculations, our calculators have been designed with simplicity in mind. Say goodbye to complicated interfaces and confusing formulas - our calculators are here to make your life easier.
With our range of easy-to-use calculators, you can effortlessly solve mathematical equations, convert units, calculate percentages, and much more. We understand that time is valuable, so we've streamlined the process to ensure quick and accurate results, saving you both time and effort.
Our commitment to reliability means you can trust the precision of our calculators. We have meticulously crafted each tool, rigorously testing them to ensure their accuracy and dependability. Rest assured that you can rely on our calculators for all your calculation needs.
Whether you're a student, professional, or just someone looking for a convenient way to handle calculations, our online calculators are here to simplify your math tasks. Join the millions of users who have embraced the simplicity and convenience of our calculators. Experience the ease and reliability for yourself and start crunching numbers with confidence.
News
📅 August 17, 2026. Calcopedia can make some noise now. The new online drums puts nine sounds under your fingers or the QWE, ASD and ZXC keys, with both a drum-kit view and a tidy pad grid. Set the tempo, hold a key for repeated hits, and let your speakers decide how quiet the practice really is.
📅 August 16, 2026. Eight new bidirectional converters cover area, mass, length, speed, pressure and angles. Compare land or room sizes with the area converter, turn ounces into grams, or switch from degrees to radians. Feet, yards, knots and psi are ready in the same two-field format too.
📅 August 16, 2026. Two new date tools are live. Use the day-of-week calculator to check a birthday, deadline or historical date. The week-number calculator turns the same date into its ISO 8601 week, useful when a schedule simply says “week 34”.
📅 August 13, 2026. The home-page search box now keeps count: Calcopedia has 180 calculators, and the number updates with the catalogue. The new miles to kilometres converter helps with routes, while pounds to kilograms covers parcels and scales. Both work in either direction and include related units.
📅 August 12, 2026. I added temperature converters for Celsius, Fahrenheit and kelvin. Use the Celsius to Fahrenheit converter for weather or ovens, or turn kelvin into Celsius; either field can drive the calculation. Réaumur is in the scale menu too, in case three thermometers arguing was not enough.