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Get in touch for questions, feedback or new calculator suggestions. Fill in the form below, or write to us directly — whichever you prefer.
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Quick Answers
- Are the calculations reliable? The formulas follow standard sources, but tax, interest and clinical reference values change over time. For important decisions, please consult a professional — see our Disclaimer.
- Is my data stored? The values you enter are sent to our server as part of the page address to compute the result. We do not save them to any database or use them to target advertising, but like any web request they can appear in routine server logs. They are removed from the address our analytics receives. Our Privacy Policy explains this in full.
- Can I suggest a new calculator? Yes, please — use the form above and tell us what you need. Suggestions from visitors are where many of our tools come from.
- Found a mistake? Tell us the calculator, the values you entered and the result you expected, and we will look into it.