Contact
Report a calculation or site issue
Contact Useful Figure about formula questions, source updates, accessibility problems, and corrections.
Public contact method
Email hello@usefulfigure.com.
What to include
Name the calculator, describe the unexpected result or accessibility barrier, and provide a public source link when suggesting a reference update. Do not send private project, payment, health, or identity details.
No quotes or contractor matching
The launch site does not sell materials, provide project quotes, or match visitors with contractors.