Get in touch
Questions, feedback, a bug report or a feature idea — we'd genuinely love to hear from you. Pick whichever channel suits you best, or fill out the form below and we'll get back to you by email.
Send us a message
Fill in the form and we'll get back to you by email. Fields marked with * are required.
Message sent!
Thanks for reaching out — we've received your message and will get back to you at the email address you provided within 2 business days.
Common reasons to contact us
Not sure if your message is worth sending? Here are the topics we handle most often — and yes, all of them are welcome.
Bug Reports
Spotted a calculation error, layout glitch or browser issue? Tell us what you did and what you expected.
Feature Requests
Wish the calculator could do something extra — export results, save history, show a graph? Send us your idea.
Calculation Questions
Not sure why a result came out the way it did? Share your numbers and we'll walk you through the math.
Partnerships & Press
Education partners, media enquiries, API access, or embedding our tool — let's talk specifics.
Education & Classroom
Teacher wanting to use our calculator in class, or need printable worksheets? We can help.
Just Saying Hi
Found the tool useful? Got a suggestion? Just want to say thanks? Those messages genuinely make our day.
Contact FAQ
Three quick questions people often ask before reaching out.
We aim to respond to every legitimate enquiry within 2 business days (Monday–Friday, UK time). Complex technical questions or partnership requests may take a little longer — but you'll always hear back from a human, not an autoresponder.
No. We use your email only to reply to your specific message. We don't run a mailing list, we don't send marketing emails, and we never sell or share your details with third parties. See our Privacy Policy for the full picture.