Contact CalcCore

Have a question, found an error, or want to suggest a new calculator or tool? We'd love to hear from you.

Get in Touch

Found a bug in a calculator? Want to suggest a new tool? Have a question about a result? Drop us an email and we'll get back to you within a few days.

Email: [email protected]

Common Questions

I got a result that looks wrong — what should I do?

Double-check your inputs first — units matter (watts vs kW, amps vs milliamps, feet vs metres). If you still think the formula is wrong, email us with the inputs you used and the result you expected. We'll investigate and fix it if needed.

Can I suggest a new calculator?

Yes — we actively add new tools based on requests. Send us the topic, what inputs you'd want, and what results matter to you. If it fits the site, we'll build it.

Are the calculators free to use?

Yes, completely free with no account required. CalcCore is supported by advertising. No data you enter is stored or sent anywhere — all calculations run in your browser.

Can I embed a calculator on my site?

We don't currently offer an embed widget, but you're welcome to link to any calculator page. If you need a specific tool for your site, contact us to discuss.

About CalcCore

CalcCore is a free calculator and tool website covering networking, electrical, battery, energy, and everyday use. Every tool is built to be fast, mobile-friendly, and accurate — with clear formulas shown so you can verify the maths yourself.