Contact Us

Send us a Message

How We Can Help

Our support team handles a wide range of questions and feedback. Here are the most common reasons people reach out to us:

• Calculator accuracy questions — If a result does not match what you expected, we want to know. Please include the inputs you used and the result you got so we can verify whether there is a discrepancy or explain why the calculator is correct.
• Bug reports — If something is not working as expected — a field that won't accept input, a chart that doesn't load, or an error message — please describe what happened and which browser and device you were using.
• Feature requests — Missing a field, a currency, or a calculation option? We actively add features based on user feedback. Tell us what you need and why it would be useful.
• New calculator suggestions — We are always expanding our library. If there is a calculator you wish existed on this site, let us know. Many of our calculators were built directly in response to user requests.
• Partnership and advertising inquiries — For business inquiries, sponsorship opportunities, or press requests, use the contact form and describe your proposal in detail.
• General questions — Questions about how a calculator works, the formulas used, or the assumptions behind a result are all welcome.

Tips for a Faster Response

To help us resolve your question as quickly as possible, please include the following information in your message:

• The name of the calculator you were using (e.g., Mortgage Calculator, BMI Calculator)
• The specific inputs you entered
• What result you received and what you expected
• Your browser and device type (e.g., Chrome on iPhone, Firefox on Windows)
• A screenshot if the issue is visual or involves a display error

Messages with this level of detail allow us to reproduce and investigate the issue immediately, rather than spending time asking follow-up questions.

Frequently Asked Questions

Are all the calculators on this site free?

Yes. Every calculator on Instant-Calculator.com is completely free to use. No account, subscription, or payment is ever required. All calculations run instantly in your browser — no data is sent to a server.

How accurate are the results?

Our calculators use standard formulas from financial institutions, healthcare organizations, and established scientific sources. For example, the mortgage calculator applies the exact amortization formula used by banks, and the BMI calculator uses the World Health Organization classification. Results are mathematically precise for the inputs given, though they are intended for informational and planning purposes — not as a substitute for professional financial, medical, or legal advice.

Do you store my data or calculation results?

No personal financial or health data entered into our calculators is collected, stored, or transmitted. All calculations happen entirely within your browser. We collect standard anonymous web analytics data (such as page views) to improve the site. See our Privacy Policy for full details.

Why does the mortgage calculator show a different result than my bank's calculator?

Minor differences between calculators are common and usually caused by rounding conventions, whether property tax and insurance are included, or — for Canadian mortgages — whether semi-annual compounding is applied correctly. Our Canadian mortgage calculator applies the mandatory semi-annual compounding rule under the Interest Act of Canada, which produces results that match major Canadian bank calculators. If you notice a significant discrepancy, please contact us with your inputs and we will investigate.

Can I suggest a new calculator?

Absolutely. We actively build new calculators based on what users request most. Use the contact form above to describe the calculator you need and how you would use it. If multiple users request the same tool, we prioritize building it. Many of the calculators currently on this site started as user suggestions.

How do I report a bug or incorrect result?

Use the contact form on this page. In your message, include the calculator name, the exact inputs you entered, and the result you received. If possible, also include the result you expected and where you found a discrepancy. Screenshots are helpful for visual issues. We review all bug reports and will follow up once we have investigated.

Is this site available in Canada?

Yes. Many of our calculators — including the mortgage, amortization, interest, and retirement calculators — have full Canadian support. Use the country toggle at the top of any page to switch between US and Canadian modes. In Canadian mode, the mortgage calculator applies semi-annual compounding, shows CMHC insurance, and uses Canadian terminology. The retirement calculator references RRSP, TFSA, CPP, and OAS accounts.

About Instant-Calculator.com

Instant-Calculator.com is a free online calculator platform owned and operated by Spacta Corp. Our mission is to make accurate financial, health, and everyday calculation tools available to everyone — without paywalls, ads that obscure content, or mandatory sign-ups.

Our current calculator library covers financial planning (mortgages, loans, interest, retirement, auto loans, life insurance), investment planning (DRIP and dividend reinvestment), health and wellness (BMI, calorie needs, body fat, sleep cycles, period tracking), and everyday calculations (age, dates, percentages, fractions). We are continuously adding new calculators based on user demand.

For more information about who we are and how we build our tools, visit our About Us page.