Contact Us

We respond to all messages within 2 business days. For the fastest response on a specific calculator, use the "Report an error" link directly on that calculator's page — it pre-fills your message with the page context.

Email: contact@calqpro.com

What to include

• Error reports: Calculator name, the inputs you used, the result you got, and what the correct result should be (with a source link if possible).
• Calculator requests: Describe the calculation, who it helps, and any authoritative sources for the formula.
• Partnerships / embeds: Describe your site and use case.