Contact
Have a question, found a mistake in a formula, or want to suggest a new calculator? We'd like to hear from you.
For feedback and corrections, email: [email protected]
This is a static website — there is no backend form. Responses may take a few days. We cannot provide personalized financial, tax, insurance, or legal advice.
Common Questions
- Can you add a calculator for [specific topic]?
- Suggestions are welcome. Email us with what you need and we will evaluate it for a future update.
- I think a formula is wrong — how do I report it?
- Email us with the calculator name, the numbers you entered, the result you got, and what you expected. We will review and correct any errors promptly.
- Can I use these calculators for my dispatching clients?
- Yes. All tools are free and public. You can share links to any calculator directly.