Contact Smart Kit Now
Request a new calculator or suggest improvements. We prioritize popular requests and respond by email if we need more details.
Email us directly
Smart Kit Now is an independent site publishing free online calculators. Every message goes to the same small team that builds and checks the tools.
What to write in about
- Corrections. A calculator returning a number you believe is wrong. Please include the page URL, the exact inputs you entered, the result you got, and the result you expected. Reproducible math errors go to the front of the queue — see our editorial policy for how we verify and fix them.
- Suggestions. A calculator or feature we don’t have yet. Tell us what you were trying to work out and we’ll look at whether we can build it.
- Press and partnerships. Interview requests, citations of our tools, or advertising enquiries.
- Privacy requests. Access to, or deletion of, any personal data you have sent us. Details are in our privacy policy.
We read everything and aim to reply within 2–3 business days; during busy periods it can take up to a week. If your message is a bug report, we may fix the calculator before we get around to answering — so it’s worth re-checking the page.