AuraCalcs is a free collection of calculators for real estate investors and landlords, people pursuing financial independence (FIRE), freelancers and self-employed workers, and students and families managing education costs. The site is organized into four sections: real estate investing, FIRE and retirement, self-employed and 1099 tax (updated for the 2026 tax year), and student loans and college savings.
Why we built it
Most calculators on the web either hide their formulas or ask for your email before showing a result. Every tool here runs entirely in your browser, shows how the number is calculated, and explains the assumptions behind it, so you can check the math yourself.
How we keep the calculators accurate
- Each formula is written out on the calculator page, with a worked example.
- Figures that change over time (tax brackets, limits, typical rates) are dated on the page and reviewed at least once a year.
- If you spot an error, tell us and we will correct it.
Your data stays with you
The numbers you type are processed by JavaScript on your own device. They are not sent to or stored on our servers.
Important
The results are estimates for education and planning. They are not financial, tax, investment, or legal advice. Please read our disclaimer.