Most longevity information online falls into two camps. Either it's buried in academic papers that require a PhD to parse, or it's shallow listicles that tell you to "eat well and exercise" without any real depth.
We wanted something different. Tools that take real science and make it actionable. You shouldn't need a biochemistry degree to figure out your creatine dose, check if your supplements play nicely together, or get a rough estimate of how fast you're aging.
Every tool here is free, runs entirely in your browser, and doesn't require an account. No data gets sent to any server. Your information stays on your device.
Who these tools are for
You're probably here because you care about your health more than the average person. Maybe you're already taking a handful of supplements and want to make sure they're not working against each other. Maybe you heard about creatine on a podcast and want to know exactly how much to take. Or maybe you're just curious about how your lifestyle stacks up against biological aging markers.
These tools are built for biohackers, health optimizers, and anyone who's serious about longevity. Whether you're a beginner just starting your supplement journey or an experienced optimizer fine-tuning a complex stack, there's something useful here.
And if you've read Peter Attia, followed David Sinclair's work, or looked into Bryan Johnson's protocol, you'll recognize the science behind these calculators. We've distilled the research into interactive tools you can actually use.
How to get the most from these tools
Start with the biological age calculator
If you're new to longevity optimization, the biological age calculator gives you a baseline. It tells you where you stand and, more importantly, which areas to focus on first. There's no point optimizing your supplement stack if your sleep and exercise fundamentals are broken.
Check your supplement interactions
Already taking supplements? Run them through the interaction checker before adding anything new. You might discover you're doubling up on mechanisms (like berberine + metformin), missing timing optimizations, or sitting on a synergy you didn't know about.
Dial in your creatine
Creatine is one of the most universally beneficial supplements. It helps with muscle, brain function, and longevity. But the generic "take 5g" advice doesn't account for your body weight, activity level, or goals. The calculator personalizes it.
Come back and retest
These aren't one-and-done tools. As your lifestyle changes, your supplement stack evolves, or you get new blood work, come back and rerun the calculators. Tracking progress over time is one of the most valuable things you can do for your longevity journey.
Privacy first
Every tool runs entirely in your browser using client-side JavaScript. Your health data, supplement selections, and biomarker values never leave your device. We don't store, track, or transmit any personal health information. What you enter stays on your screen and disappears when you close the tab.
Frequently asked questions
Are these tools really free?
Yes, completely free. No account, no email, no trial period. Every tool works fully without restrictions. We build free tools to help people make better longevity decisions, and our premium AI coaching service is available separately for those who want personalized protocols.
Do I need to create an account?
No. Every tool works immediately with zero signup. Just open the page and start using it. Your data stays in your browser and isn't stored anywhere.
How accurate are these calculators?
Our calculators are based on published research and established dosing guidelines. The creatine calculator uses standard loading and maintenance formulas from sports nutrition literature. The interaction checker is built on peer-reviewed pharmacological data. The biological age calculator uses well-established lifestyle correlations. They're educational tools, not clinical instruments, but they're grounded in real science.
Is my data private?
Completely. Everything runs client-side in your browser. No health data, supplement selections, or biomarker values are sent to any server. When you close the tab, your data is gone. We take health data privacy seriously.
Will you add more tools?
Yes. We're actively developing additional longevity tools including a stack cost calculator, supplement timing optimizer, and protocol builder. Check back regularly or join our community to get notified when new tools launch.
Can I use these tools on my phone?
Yes, all tools are fully responsive and work on mobile devices, tablets, and desktop computers. The interface adapts to your screen size.
Want personalized longevity protocols?
Our AI coach builds custom supplement stacks based on your goals, biomarkers, and budget. Go beyond free tools with a protocol tailored to you.