We Read Every Message
Get in touch.
We are listening.
Formula error reports get the fastest response — we treat accuracy as our highest priority. Every message is read by a real person.
Why people contact us
⚠
Report a Formula Error
Found an incorrect result or formula? We fix confirmed errors within 24 hours.
💡
Suggest a Calculator
Need a tool we do not have? Send us the name and we will prioritize it.
🤝
Business Inquiry
Partnership, licensing, or advertising — we respond promptly.
❓
General Question
Methodology, accessibility, or anything else — all messages are read.
How to reach us
We respond within 24 hours for formula errors, 48 hours for all other inquiries.
Response Times
- Formula error reportsWithin 24 hours
- Calculator suggestionsWithin 48 hours
- General questionsWithin 3 business days
- Business inquiriesWithin 2 business days
Found a formula error?
Accuracy is our highest priority. Every confirmed error is fixed immediately and the page is updated the same day.
Report an Error →