Contact Us

Questions, suggestions, mathematical feedback, or commercial inquiries — we are here to help.

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Get in Touch with Oddly Useful

We welcome your questions, feedback, mathematical corrections, tool suggestions, and commercial inquiries. Our team is based in the United Kingdom and aims to respond to all legitimate correspondence within 24 to 48 business hours (Monday to Friday, 9:00 AM – 5:00 PM GMT).

Dedicated Contact Desks

General Inquiries & Feedback

For general questions, user feedback, or everyday site support:

hello@oddlyuseful.xyz

Editorial & Calculation Accuracy

For calculation errata, statutory tax updates, or formula verification:

editorial@oddlyuseful.xyz

Commercial & Sponsorships

For advertising, brand partnerships, widget licensing, or commercial queries:

commercial@oddlyuseful.xyz

Privacy & Data Governance

For GDPR rights, cookie questions, or privacy policy inquiries:

privacy@oddlyuseful.xyz

Operational Headquarters

Oddly Useful
Independent Digital Utility Laboratory
London, United Kingdom
Website: https://oddlyuseful.xyz

Security Vulnerability Disclosures

We take web application security seriously. To submit responsible vulnerability disclosures or security reports, email our security desk at security@oddlyuseful.xyz or inspect our machine-readable RFC 9116 declaration at /.well-known/security.txt.

Trust & Governance Quick Links