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Yes! Every single tool on KnowNewTech Tools is completely free to use. There are no subscriptions, no premium plans, and no hidden fees. All tools will remain free forever.

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Your data is completely safe. All calculations happen inside your browser using JavaScript — nothing is ever sent to our servers. We don't store any inputs, results, or personal data. You can even use the tools in offline mode once the page loads.

Absolutely! We love hearing tool suggestions from our users. Fill in the contact form above, select "Tool Suggestion" as the topic, and describe the tool you'd like to see. If it's feasible, we'll add it to our roadmap.

Please use the contact form above and select "Bug Report" as the topic. Mention which tool has the issue, what inputs you used, and what result you expected vs. what you got. We'll investigate and fix it as quickly as possible.

Our tools provide estimates based on standard formulas and are for informational purposes only. They should not be used as a substitute for advice from a qualified financial advisor, doctor, or other professional. Always verify important decisions with a certified expert.

For advertising or partnership inquiries, please use the contact form above and select "Advertising" or "Business / Partnership" as the topic. You can also email us directly at Yadav.david@gmail.com.