What Calcular.online is
Calcular.online is a free collection of online calculators and converters, available in 16 languages. We bring together financial, scientific, health, lottery, spiritual and general-purpose tools in fast pages that work on phones and computers and require no sign-up.
Our goal is to deliver clear results that are easy to check. Every calculator includes a “How it works” section that explains the method used.
What you will find here
- Financial: loan and financing simulation (Price and SAC systems), compound interest and an HP 12c calculator simulator.
- Scientific: a unit converter and a scientific calculator in the style of the Windows calculator.
- Lotteries: statistical analysis for Mega-Sena, Quina and Lotofácil, with number frequency, overdue numbers and combination history based on official results.
- Health: body mass index (BMI) calculation.
- Spiritual: Kabbalistic numerology, Chinese zodiac, Vedic numerology, Abjad numerology, I Ching and Odù Ifá, each grounded in its tradition of origin.
- Miscellaneous: a lunar calendar and other general-purpose calculators.
How calculations are made
Calculations run on the server, in Java, using explicit and well-known formulas. Some tools, such as the HP 12c simulator and the Windows calculator, run entirely in your browser. Results are rounded for display only.
Whenever possible, we follow recognized standards, such as the World Health Organization BMI categories and the Price and SAC amortization systems. On each calculator page, the “How it works” section describes the method and assumptions.
Who maintains the site
Calcular.online is maintained by Tiago J. Adami.
Independence and accuracy
Calcular.online is independent. We are not affiliated with banks, financial institutions, government bodies, Caixa Econômica Federal or the owners of the trademarks mentioned, such as HP and Microsoft Windows, which belong to their respective owners.
We do our best to make the results correct, but they are informational estimates and may differ from official figures, contracts or calculations made by institutions. Always confirm important information with the institution or professional involved.
Found an error or have a suggestion?
If you found an error, want to suggest a calculator or want to improve a text, get in touch through the contact form. We read every message.
You can also write to [email protected].
Languages
The site is available in 16 languages: Portuguese (Brazil), Spanish (Latin America), English, French, Arabic, Russian, Hindi, Telugu, Tamil, Kannada, Marathi, Japanese, Korean, Simplified Chinese, German and Italian. Change the language in the site header.