Contact Us

Email Us

The fastest way to reach us is by email at [email protected]. We typically respond within 24 to 48 hours during business days. For urgent issues like broken calculators or incorrect results, please include the calculator name and the inputs you used so we can reproduce and fix the problem quickly.

What Can We Help With?

• Calculator Questions — Need help using a calculator or understanding results? We will walk you through it step by step with clear instructions.
• Bug Reports — Found something broken? Let us know the page URL, what you were trying to do, and what happened. Screenshots are helpful but not required.
• Feature Requests — Want a new calculator or guide? Tell us what calculation you need and how you would use it. We prioritize requests based on demand and feasibility.
• Accuracy Issues — If a calculator result seems wrong, please share the inputs you used and what you expected. We verify all accuracy reports against industry standards.
• Feedback — Suggestions to improve Numvex are always welcome. We read every message and consider all feedback when planning updates.
• Partnerships — Interested in working together? We are open to collaborations that align with our mission of providing free, privacy first tools.

Response Times

We aim to respond to all inquiries promptly. General questions are usually answered within 24 to 48 hours. Bug reports are acknowledged within 24 hours and fixes are deployed as soon as possible. Feature requests are reviewed and responded to within 3 to 5 business days.

Before You Contact Us

Here are some quick answers to common questions. All calculators are free with no signup, no subscription, and no hidden fees. No data is collected since all calculations run in your browser. Results are estimates only and should be verified with local suppliers. All calculators work on phones, tablets, and desktops.

Prefer to email us directly? Send your message to [email protected] and we will respond within 24 to 48 hours.