About CalcStation

CalcStation is a free, ad-supported calculation and conversion platform serving eight languages: English, Spanish, French, German, Italian, Portuguese, Russian, and Hindi.

What we do

We build calculation tools that take user inputs and return useful results — arithmetic, unit conversions (length, weight, temperature, volume, area, speed), date and time math, pregnancy due-date estimation, financial planning (loans, investments, debt payoff, emergency funds), and scientific calculators (drug half-life, file size, download time).

Editorial philosophy

• Accuracy first. Every formula is named and linked to a primary source on our methodology page.
• Plain language. We explain results, not just compute them.
• No data retention. Calculator inputs are not stored on our servers.
• No professional advice. Tools are informational; consult a qualified professional before making decisions.

How we review and update

See our editorial policy for review cadence, sourcing standards, and the corrections process.

Contact

Use the contact form linked in the footer to reach out about errors, suggestions, or accessibility feedback.