About tools.ryupy.com
A free, no-nonsense toolkit for everyday calculations — built by a small team that believes great tools should be free.
What We Are
tools.ryupy.com is a collection of free online calculators and tools designed to make complex calculations simple and instant. No signup required, no account to create, and no personal data collected. Open a tool, enter your numbers, get your answer.
We believe useful utilities should be freely accessible to everyone — no paywalls, no mandatory registrations, and no intrusive tracking.
Our Mission
Calculations that once required spreadsheets, textbooks, or expensive software should be available to anyone with a browser. We build practical, accurate, and easy-to-use tools covering everything from mortgage payments to calorie intake to network subnetting.
Every tool is built with clarity in mind: clean inputs, instant results, and enough context to actually understand what the numbers mean.
What We Offer
- Finance — Mortgage, compound interest, loan repayment, ROI, inflation, and more.
- Health — BMI, BMR, TDEE, body fat, calorie needs, BAC, and fitness metrics.
- Math — Percentages, fractions, quadratic equations, averages, and number tools.
- Converters — Length, weight, temperature, volume, speed, pressure, and more.
- Time — Date difference, age, time zones, Unix timestamps, and countdowns.
- Cooking — Recipe scaling, ingredient conversions, cooking unit converters.
- Construction — Area, volume, roofing, flooring, paint, and materials estimation.
- Network — IP subnet calculators, CIDR tools, DNS lookup, and bandwidth.
New tools are added regularly. If there's something missing, let us know.
The Team
tools.ryupy.com is built and maintained by the Ryupy team — a small, independent software studio focused on building practical apps and web tools. We're developers, designers, and problem-solvers who care about shipping quality products without the bloat.
Small team, high standards. Every tool you use here has been designed, coded, and tested by us.