Contact us

MaterialCalc.io is run by Arend. Whether you found a number that looks off, want a new calculator, have a question about a purchase or would like to work together, we'd love to hear from you.

How can I reach you?

Email us at arendopt@gmail.com. We usually reply within two business days.

What should I include?

• For calculator questions: the calculator name and the values you entered.
• For purchases: the email address you used at checkout. We never ask for card details.
• For partnerships or advertising: your company name and website.

Read more about MaterialCalc.io, or see our Privacy Policy.