About CalcBeam

<h2>What CalcBeam is</h2>

CalcBeam is a free library of online calculators covering money, math, health, science, construction and everyday life. Every tool runs instantly in your browser with no sign-up and no paywall.

<h2>How the calculators are built</h2>

Each calculator uses standard, published formulas implemented in plain JavaScript. Every page shows the formula it uses, a worked example with real numbers, common mistakes, limitations and answers to frequent questions, so you can verify the math instead of trusting a black box.

<h2>Our standards</h2>

• Formulas are standard and cited where they come from.
• Pages state their assumptions and limits honestly.
• Finance and health tools carry clear disclaimers and are educational, not professional advice.
• Your inputs never leave your device; calculations run locally.

<h2>Contact</h2>

Questions, corrections or suggestions: see the contact page.

<h2 id="support">Support CalcBeam</h2>

CalcBeam is free and always will be. If a calculator saved you time or helped you make a better decision, the best support is sharing it with someone who needs it, linking to it from your site, or embedding a widget with the free embed tool.