Entre em contato
Have a question about our FOIL calculators, found a bug, or want to suggest a feature? We'd love to hear from you.
Or email us directly at hello@foilcalculator.com
Reach us at
hello@foilcalculator.com
Response Time
We typically reply within 24–48 hours on business days.
What to Write About
Bug reports, feature ideas, math questions, or general feedback - all welcome.