Calculator or content corrections
Include the page URL, the inputs you used, the result you received, and the result or source you expected. Reproducible reports are the fastest to investigate.
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Use this contact channel for calculator errors, factual or citation corrections, accessibility problems, privacy questions, and general site feedback.
Send your message to [email protected]. ONLINTools does not operate a telephone support line or a physical customer office. Email is the official support channel and keeps enough context together to investigate technical and editorial reports.
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Calculator results are informational and cannot replace personalized medical, financial, tax, or legal advice. ONLINTools cannot review an individual diagnosis, investment, tax return, legal dispute, or other professional case. For details about data processing and editorial corrections, read the relevant policy before contacting us.