Contact us
Have a question, found a bug, or want to suggest a calculator? Email us — we read every message and reply within 48 hours.
🐛 Bug reports
Found a math error or broken tool? Email bugs@calctube.com with:
- The URL of the calculator
- The values you entered
- What result you expected vs what you got
💡 Calculator requests
Need a calculator that isn't here yet? Send your suggestion to ideas@calctube.com. We add the most-requested tools first.
💼 Partnerships & advertising
For partnership or advertising inquiries: partners@calctube.com