Get In Touch

Contact

Questions, corrections, feature ideas or feedback — we read every message. Response times are typically 2–5 business days.

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Report an Error
Found a calculation that seems wrong, or a value that doesn't match your real-world experience? Please let us know — include your setup details so we can investigate.
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Feature Suggestions
Ideas for new calculators or improvements to existing ones are always welcome. Features currently being evaluated include: gradient speed estimator, heart rate zone converter, Strava segment power predictor, and a bike fit geometry advisor.
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Partnerships
Interested in a content partnership, sponsored content, or link exchange with a relevant cycling brand or publication? Email us at [email protected].
No affiliate links or paid recommendations are included in calculator results.
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Methodology Questions
If you're a researcher, coach, or sports scientist and want to discuss the physics models used, we're happy to engage. Please mention your background in your message.
Please note: We cannot provide personalised training advice, medical guidance, or specific product recommendations. For training plans, consult a qualified cycling coach. For medical advice, consult a physician.
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Get in touch
[email protected] Send Email

We typically respond within 2–3 business days.
For error reports, include your setup details
(weight, tyre width, terrain, result received).

What to include
🐛 Bug report — your weight, tyre width, terrain, value you expected
💡 Feature idea — describe the calculation and its use case
🔬 Methodology — cite your source if you have one
🤝 Partnership — briefly describe the opportunity