Have a question, spotted a problem, or want to suggest a new tool? We would love to hear from you. Calculator Suite is built and maintained by a small team, and feedback from people who actually use the calculators is what drives most of our updates and new releases.
Fill out the form below and we will get back to you as soon as we can — usually within two to three business days. To help us reply faster, please be as specific as possible: if your message is about a particular calculator, include the page address and the numbers you entered.
What you can contact us about
- Report an error — tell us if a calculator returns a result that looks wrong, and we will investigate and fix it.
- Suggest a calculator — let us know what tool you would like to see next and how it should work.
- Feedback on a formula or method — if you think a calculation should use a different formula or source, we want to know.
- Partnerships & advertising — reach out about collaborations, advertising, or media and press enquiries.
Before you get in touch
Every calculator on the site shows the formula it uses and the source behind it, so if you are unsure how a result was reached, the answer is often on the page itself. We are glad to explain our methodology, but we cannot give personalised financial, medical, tax, or legal advice — please see our disclaimer for why.
Prefer to read up first? Browse our guides for in-depth explainers, or jump straight to the finance, health & fitness, math, time & date, or unit conversion calculators.
FAQs
We read every message and aim to reply within two to three business days. Response times can be a little longer around weekends and public holidays, or when we are rolling out a batch of new calculators. If your message is about a calculator that is returning a clearly wrong result, flag it as urgent in the subject line and we will prioritise it.
We are happy to explain how one of our calculators works or which formula it uses, but we cannot provide personalised financial, medical, tax, or legal advice — that requires a qualified professional who knows your full situation. Every calculator page documents the formula and the source behind it, so you can check the methodology yourself or share it with your advisor. See our disclaimer for more detail.
Send us the calculator's web address, the exact values you entered, the result you got, and the result you expected. That lets us reproduce the issue straight away. Most reported ‘errors’ come down to a different formula, rounding convention, or unit assumption, so we will always explain what the calculator is doing and fix it if the math is genuinely off.
Yes — suggestions are one of the main ways we decide what to build next. Tell us what the calculator should work out, who it is for, and the formula or source you would expect it to use. Clear, well-scoped ideas with a real-world use case tend to get built first.
We do. Use the form for partnership proposals, advertising enquiries, or media and press requests, and include enough detail for us to understand the opportunity. Please note we do not publish low-quality guest posts or paid links that do not add value for our readers.
We only use the name, email, and message you submit to respond to your enquiry — we do not sell or share it. The calculators themselves run entirely in your browser and never send your inputs to us. For full details on how we handle data, see our privacy policy.