Contact Calculator Matters
Send feedback, report a calculation issue, suggest an improvement, or ask a general question about the platform.
Get in touch
use the contact formOne inbox for everything — calculator corrections, workbook issues, broken links, privacy questions, accessibility feedback, and feature suggestions.
Send an emailIf the form or protected email display does not load, use: contact [at] calculatormatters [dot] com.
Direct routes
Postal address
Calculator MattersKhasra No. 291, Maldhan Road, Village Garhinegi
Tehsil Kashipur, Udham Singh Nagar
Uttarakhand, India
The rice mill office Calculator Matters is built and run from.
Calculation, source, accessibility, privacy, copyright and advertising messages are read by a person, and accuracy reports go first.
What to include
For a calculation correction
- Calculator page URL
- Inputs entered
- Result shown
- Result expected
- Any source or reasoning that helps verify the issue
For a workbook issue
- Calculator name
- Workbook file name, if visible
- What did not work
- Device or browser, if relevant
For a feature suggestion
- Calculator or category
- Use case
- What output or comparison would help
Calculator Matters can help clarify how a calculator works, fix errors, and improve explanations. It does not provide personalised financial, tax, legal, investment, medical, or professional advice.
Need to report a calculation issue?
Use the contact form or email us at our contact address with the calculator URL, inputs, and expected result — see how reports are handled below.
How error reports are handled
Accuracy reports are the highest priority. Include the calculator name or URL, the exact inputs, the result you saw, and the result you expected — the more precise the report, the faster we can confirm and fix it.
We reproduce the issue, then classify it — a formula error, an input/unit error, a display or rounding issue, a content error, or working-as-intended (usually an assumptions difference, which we then state more clearly in the page copy).
Accuracy reports are handled before every other message. See the full Corrections Policy for what counts as a material vs minor correction and how a fix gets re-verified and published.