We’re happy to help with questions, feedback, and corrections.
Not sure how a result was calculated or what an input means? Ask us.
Tell us what to improve or which calculator we should build next.
Spotted an outdated rate or a calculation issue? Let us know and we’ll review it.
Many questions are answered in the guide and FAQ section beneath each calculator. You may also find what you need in our policies:
When reporting a calculation issue, please include the calculator name and the exact values you entered. That helps us reproduce and fix the problem quickly.