P247 is a collection of free online calculators and converters built for speed and privacy. Every calculation runs entirely in your browser -- no data is sent to any server, no accounts are required, and nothing is stored.
Why We Built This
Most calculator websites are bloated with pop-ups, auto-playing videos, and trackers that follow you across the internet. We wanted something different: clean tools that load instantly, work on any device, and respect your privacy.
What We Offer
P247 includes calculators for tipping, mortgage payments, BMI, percentages, bill splitting, unit conversions, age calculations, discounts, time zone conversions, random number generation, and Amazon affiliate link creation. Each tool includes a detailed guide explaining the underlying concepts and formulas.
Our Approach
- Client-side only -- all math happens in your browser using JavaScript. Your inputs never leave your device.
- No sign-up required -- just open a calculator and start using it. No email, no account, no paywall.
- Mobile-friendly -- every tool is designed to work on phones, tablets, and desktops.
- Fast loading -- the entire site is a single lightweight page. No frameworks, no build steps, no bloat.
Accuracy
Our calculators use standard mathematical formulas and are suitable for everyday use. For financial decisions (mortgages, investments), professional tax preparation, or medical assessments, we recommend consulting a qualified professional. These tools are meant to help you estimate and understand, not to replace expert advice.
Contact
Questions, suggestions, or bug reports? Reach out at our contact page.