Terms of Use

Last updated: May 21, 2026

By accessing billycalc.com and using its tools, you agree to these Terms. If you don't agree — please don't use the site.

1. What billycalc is

billycalc is a free online service of 5800+ calculators and converters: financial, tax, medical, construction, marketing, mathematical and others. All calculations use publicly known formulas.

2. Disclaimer: results are approximate

All results on billycalc are approximate. Calculators use standard formulas and don't account for the full set of individual circumstances, regional specifics, changes in legislation, or special conditions from banks, insurance companies and other organizations.

Before making significant financial, medical, construction or other decisions — consult current regulations and qualified specialists (financial advisor, doctor, lawyer, engineer, etc.).

3. Not financial / medical / legal advice

billycalc is a calculation tool, not a source of professional recommendations. The service:

Is NOT a registered financial advisor, broker, or bank
Does NOT replace consultation with a doctor, dietitian, fitness trainer
Does NOT replace consultation with a lawyer, accountant or tax advisor
Does NOT replace project documentation from builders, architects, engineers

Actions taken based on billycalc calculations are your sole responsibility.

4. Limitation of liability

To the maximum extent permitted by law, billycalc operator is NOT liable for:

Direct or indirect losses, lost profits, lost data
Calculation errors caused by erroneous input data
Formula obsolescence due to changes in legislation
Site unavailability (hosting, DDoS, force majeure)
Content of external links

5. Copyright

Formulas (e.g., annuity payment, BMI, NPV) are public information and not protected by copyright.

You can freely link to billycalc with source attribution. Screenshots of results can be used for personal and educational purposes.

6. Prohibited use

You may NOT use billycalc for:

Automated requests for scraping, parsing or DDoS
Reverse engineering of site code
Creating clones or copies of the service
Passing off billycalc calculations as results of licensed financial/medical organizations
Embedding calculators in your own service without written permission (exception: standard iframe widgets when available)

7. External links

The site may contain links to external resources. billycalc does not control the content of these sites and is not responsible for their operation or policies.

8. Service changes

We reserve the right to modify, add or remove individual calculators and pages without notice. Permanent availability of any specific calculator is not guaranteed.

9. Changes to Terms

These Terms may be updated. Last updated date is shown at the top. Material changes will be announced via banner on the homepage.

10. Applicable law

These Terms are governed by the laws of the Russian Federation. Disputes are subject to resolution under Russian Federation legislation.

11. Contact

For all questions — contact form.

Related documents: Privacy Policy · Cookie Policy