Support

Contact Online Calculator Tools

Have a calculator question, found something that needs correction, or want to suggest an improvement? Use the contact options below to reach Online Calculator Tools.

Clear support optionsNo account requiredUSA-focused calculator website

How can we help?

We welcome useful feedback that helps us improve calculator accuracy, clarity, accessibility, navigation, and supporting explanations.

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General supportQuestions about using the website, finding a calculator, or understanding a page.

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CorrectionsReport a formula, wording, source, or calculation issue and tell us which page you were using.

Calculator suggestionsSuggest a calculator or useful improvement that would make the website more helpful.

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Technical feedbackTell us about display, mobile, accessibility, broken-link, or browser problems.

Email Us

Send us a message

Use this form to send your message directly to contact@onlinecalculatortools.com. Your email app will not open.

Before contacting us

For calculator-specific questions, include the page name and the values you entered. Do not send passwords, Social Security numbers, banking credentials, payment-card numbers, medical records, or other highly sensitive personal information.

Calculator results are intended for general informational use. For personal medical, tax, investment, lending, or legal decisions, use an appropriately qualified professional and official documents where needed.