Indian copyright law, reporting suspected infringement, review of disputed material, and responsible reuse of educational content.
Last updated: October 28, 2026
Purpose and Indian legal framework
How to Calculate is operated from India and respects the rights of authors, artists, photographers, software developers, publishers, and other copyright owners. This policy explains how to bring a copyright concern to our attention, what information helps us identify the material, and how we aim to review requests fairly. It applies to material appearing at howto-calculate.com, including written guides, illustrations, and website-specific expressive content.
Our principal copyright reference is the Copyright Act, 1957, as amended, together with other Indian laws that apply to the particular facts. Section 51 describes circumstances in which copyright may be infringed, while Section 52 lists activities that are not infringement under specified conditions. We do not treat any complaint as automatically proven merely because someone sends us an email.
This is a voluntary contact and review policy for our educational publishing website. It is not a claim that every provision governing online intermediaries applies to us. Any separate obligations arising under Indian information-technology rules, binding notices, or court orders will be addressed according to their actual legal applicability.
Copyright and educational material
Copyright can protect original forms of expression, such as written explanations, illustrations, and parts of software, subject to applicable legal requirements. Facts, methods, general ideas, and mathematical relationships may receive different treatment from an original written expression or drawing. For instance, the arithmetic behind a simple percentage is not the same issue as copying an original article word for word.
Our calculators explain mathematical and practical topics. Where possible, we aim to create our own text and diagrams, cite useful source material, and avoid reproducing protected graphics or software without authorization or a lawful basis. We welcome specific reports where a page appears to use another creator’s protected work improperly.
A mention of a brand, organization, official rule, or publication does not establish that the named party sponsors or licenses this website. Copyright, trademark, factual accuracy, and other intellectual-property questions can require separate assessments, so please identify the specific right and material that concerns you.
Copyright infringement under Indian law
Section 51 of the Copyright Act, 1957 describes circumstances in which conduct may infringe the rights of a copyright owner, including certain unauthorized uses of rights reserved under the Act. Whether a particular reproduction, publication, or communication constitutes infringement depends on the protected work, the rights involved, any applicable licence, and the relevant legal facts.
Copyright ownership does not necessarily mean that every quotation or reference to a work is prohibited. Section 52 describes several exceptions and permitted activities. The existence of an educational purpose is relevant in some situations, but it is not a blanket permission to copy entire works or to ignore the conditions of the Act.
We assess a complaint with these distinctions in mind. A person reporting copied text should identify the original expression and the allegedly copied passage. A person reporting a photograph should identify the image and the rights they claim. A request that only disputes a common mathematical fact or formula may not present a copyright issue.
Fair dealing, exceptions, and lawful use
Section 52 of the Copyright Act, 1957 includes, among other exceptions, specified fair-dealing purposes such as private or personal use including research, criticism or review, and reporting current events, subject to the statutory requirements. It also contains other provisions addressing activities in educational and technical contexts. Different forms of work and uses can be subject to different conditions.
We do not assume that a reference to education or research resolves every complaint. The amount used, the type of work, the reason for the use, applicable licensing arrangements, and the precise statutory exception can all matter. A source credit or hyperlink does not by itself replace permission where permission is legally required.
If you believe that a reported use is authorized, licensed, public domain, or otherwise permitted by Indian law, please provide the available explanation or documentation. We may consider that information before deciding whether a correction, removal, clarification, or no change is appropriate.
Protection of works created outside India
Our location in India does not mean that we disregard works created in other countries. The Copyright Act contains provisions concerning international copyright, including Section 40, and India provides protection to qualifying foreign works under its applicable international copyright framework.
A rights holder based outside India may therefore have a genuine copyright concern under Indian law. We invite clear reports regardless of where a creator lives, and we aim to evaluate the particular rights and use rather than reject a concern solely because it comes from another country.
At the same time, operating from India does not guarantee that no other country’s law could ever become relevant to a cross-border dispute. Questions of jurisdiction, court orders, hosting arrangements, and overseas activity depend on the circumstances. We do not use this website policy to promise immunity from otherwise applicable obligations.
How to submit a copyright complaint
Send your concern to contact@howto-calculate.com with a subject such as Copyright complaint. Identify the original work clearly, explain your relationship to the copyright owner, and provide a direct link to the page or material on our website that concerns you.
Please include the particular passage, image, design, or other material you believe is infringing and explain why you believe the use was not authorized. A link to an original published version, a description of the protected work, publication details, or relevant rights documentation may help us assess the claim.
Provide a working email address for follow-up and a clear statement that your report is made in good faith and that the information you provide is accurate to the best of your knowledge. If you act for another person or company, explain your authority to do so. Do not attach unrelated private records, passwords, or sensitive information that is unnecessary for identifying the work.
How complaints are reviewed
On receiving a sufficiently specific report, we aim to locate the material, examine the allegation, and consider the work identified, possible sources or permissions, and any relevant legal exceptions. We may ask for additional details when the link, claimed ownership, or alleged copying is unclear.
Depending on the information available, possible outcomes include removing or disabling access to disputed material, replacing a visual, revising a passage, correcting attribution, seeking permission, or declining a request that does not establish a sufficient basis for change. A correction may involve the page itself and other places where the same content appears.
We do not promise that every claim will produce the removal requested or that every email will receive an individualized response by a fixed deadline. Where a binding direction, applicable statutory duty, or court order imposes a specific requirement, that obligation must be evaluated separately from our voluntary review process.
Disputed removals and requests for reconsideration
If you believe material was removed or changed because of a misunderstanding, write to the same email address and identify the relevant page and material. Explain why you believe the use was licensed, original, permitted by law, or otherwise non-infringing. Include documentation where appropriate.
We may review that information along with the earlier complaint, consider whether additional permission is needed, or seek clarification from the rights holder. A request for reconsideration does not guarantee republication and does not replace any legal process that may apply to a contested copyright claim.
Where the facts are disputed or legal rights are unclear, we may refer the issue for legal advice, maintain a restriction while reviewing the matter, or respond as required by a competent authority. The fair evaluation of a complaint requires considering both the rights asserted and legitimate uses permitted by law.
Website contributions, repeat problems, and misuse
This website primarily publishes its own educational content. A reader’s ability to access a calculator does not mean that the reader has an account allowing public uploads or publication. We should not claim to operate a public contributor system when such a service is not present.
We may remove material or restrict access where an identifiable contributor repeatedly supplies content that violates applicable rights, subject to the features actually offered by the website. We may also review whether a recurring issue originates in an image source, content process, or misunderstood licensing condition.
Please do not use the copyright reporting channel for unrelated requests to suppress criticism, disagreement about a numerical result, or disputes about facts. Knowingly false allegations can harm legitimate publishers and creators. A concern about incorrect mathematics, unsupported claims, or inaccurate information belongs under our Corrections & Updates Policy.
Permissions and reuse of our material
Visitors are welcome to link to the website and refer to ordinary mathematical methods for lawful purposes. However, copying substantial original explanations, illustrations, site-specific graphics, or protected code may require permission unless an applicable legal exception or licence allows the use.
If you want to reuse a particular asset or passage, email contact@howto-calculate.com with the URL, the material involved, and how you intend to use it. Explain whether the reuse will appear in a classroom handout, commercial publication, website, software product, or another setting.
Sending a permission request does not itself grant permission. We may need to establish whether the material is ours to license or includes third-party rights. When using material governed by another person’s licence, follow the conditions provided by the relevant rights holder.
Official resources, contact, and policy updates
For Indian copyright law, consult the Copyright Office’s Chapter XI: Infringement of Copyright, which includes Sections 51 and 52. The Copyright Office’s Chapter IX: International Copyright explains provisions concerning foreign works. Official material should be read in its current form when legal consequences are significant.
This policy describes our contact process and general approach; it does not constitute legal advice or replace a binding legal notice, official complaint mechanism, or court process. If a matter is urgent, complex, or subject to a deadline, seek guidance from a suitably qualified Indian legal professional.
We may update this page as the website’s operations or relevant legal requirements change. Questions can be sent to contact@howto-calculate.com. For other website rules and explanations, consult our Terms and Conditions, Editorial Policy, and Privacy Policy.