Contact Us

We are happy to hear from you. Whether you have a question about a calculator, found a bug or would like to suggest a new tool, the OnlineCalculadora team reads every message.

How to Reach Us

Please use the contact form on this page to send us a message. Include your name, an email address where we can reply and as much detail as possible. We aim to respond as soon as we can, although response times may vary.

What to Include

• Bug reports: the calculator page URL, the numbers you entered, the result you expected and what you saw instead. Mentioning your device and browser also helps.
• Feature requests: what you would like to calculate and how you would use it.
• Content feedback: the page and the section you are referring to.

Before You Write

Many common questions are answered in the FAQ section at the bottom of each calculator page. For example, the percentage calculator explains percent change, and the BMI calculator covers healthy ranges and limitations.

Please Note

We cannot provide personal medical, financial, tax or legal advice. Our calculators give general estimates, so for decisions about your health or money, please speak with a qualified professional. We also never ask for passwords or payment details by email.

You can learn more about who we are on our About Us page. Thanks for helping us make OnlineCalculadora better.