Contact Us
We’d love to hear from you. Whether you’ve found a bug, spotted a calculation that looks wrong, want to suggest a new calculator, or just have a question — send us a note.
Email us at
[email protected]Reporting a calculation error
Accuracy matters to us. If you believe a calculator is giving the wrong result, please include the calculator name, the exact values you entered, and the result you expected (and your source, if you have one). That lets us reproduce and fix the issue quickly. You can read more about how we build and check our calculators on our methodology page.
A note on response times
SparkCalc is a small, independent project, so we may not reply instantly — but we do read every message and genuinely appreciate the feedback. Corrections from readers help keep the site accurate for everyone.