Contact Launch Hub
Thanks for stopping by. Whether you have a question about a calculator, spotted a number that does not look right, or want to suggest a tool we should build, this page is the fastest way to reach us.
Email: [email protected]
Email is the only contact channel we operate, and it is the fastest way to reach us. Messages are read by the person who maintains this site, not an outsourced support desk.
What We Can Help With
- Calculator questions — a field or unit that is not clear, or a result you want explained.
- Corrections — a formula, rate, or reference that you believe is wrong or out of date.
- Broken pages — a tool that will not load, or a link that goes nowhere.
- Tool requests — a calculation you need that we do not cover yet.
- Partnerships and permissions — licensing, reuse, or advertising enquiries.
Business Hours
Monday to Friday, 9:00 AM – 6:00 PM (GMT+8)
Messages received outside these hours are answered on the next business day.
Typical Response Time
We typically respond within 24–48 business hours. Correction reports that include a source are prioritised, because they are the fastest to verify and fix.
What to Include in Your Message
To help us route your message and answer it on the first reply, please include:
- the URL of the calculator or guide you are writing about;
- the values you entered and the result you saw (if relevant);
- the result you expected instead, and where that expectation comes from;
- for corrections, a link to the primary source if you have one.
What We Cannot Do
Launch Hub publishes general-purpose calculation tools and plain-English explanations of formulas. We cannot review your personal circumstances, and we cannot give financial, tax, legal, or medical advice. If your question depends on your own situation, please consult a qualified professional in your jurisdiction.