Mentions légales
Privacy, terms, disclaimer and copyright in one place, with a plain-language summary of what each document actually says.
Politique de confidentialité
What we collect, what stays in your browser, and how long anything is kept.
Conditions générales
Permitted use, prohibited use, warranty and limitation of liability.
Avertissement
What the estimates can and cannot be relied on for.
Droits d'auteur
Ownership and the terms for reusing our tables and data.
In summary
- Calculator inputs never leave your browser.
- No account, no payment, no advertising network.
- Everything here is a planning estimate, not engineering advice.
- You may cite our figures and reproduce our tables with attribution.