About Random Tools
Free, accurate, and private tools for everyone — no account required.
Operated by MASS DATA LLC
To provide free, accurate, and privacy-first tools that answer the real questions people search for every day — from "how old is my dog?" to "when should I claim Social Security?" — without paywalls, account sign-ups, or data collection.
A web where useful tools are genuinely free — not free as a hook for upsells, not free in exchange for your data, but free as in: you get the answer, instantly, privately, and move on with your day.
What We Believe
Every calculation happens entirely in your browser. Your birth date, health data, and financial figures never reach our servers. This isn't a policy — it's the architecture.
We consult authoritative sources — ACOG for pregnancy tools, SSA for retirement calculators, AVMA for pet age formulas — before publishing any result. Getting it right matters more than shipping fast.
No "premium" tier. No required sign-ups. No ads served based on your inputs. Every tool on this site is 100% free, for everyone, forever.
Tools should answer your question without clutter. We build fast, focused interfaces that give you the result without making you navigate through menus, marketing, or noise.
What We Build
Random Tools currently offers 24 free calculators spanning age, dates, pregnancy, cultural age systems, and retirement planning — with more categories on the way.
- Age calculators — chronological age, biological age, dog age, cat age, Korean age, Chinese age, baby age, age on any date, age difference
- Date tools — date difference, date duration, working days, date countdown, time until, leap year checker
- Pregnancy & fertility — gestational age, pregnancy week by week tracker, conception date, ovulation cycle
- Retirement & finance — Social Security full retirement age, early vs delayed claiming strategies
- Culture & lifestyle — zodiac sign, generation calculator, Chinese zodiac
Upcoming categories include personal finance, health and fitness, unit converters, and text utilities.
The Team
Anand Patel
Founder & Software Engineer
Built Random Tools from the ground up. Responsible for all calculator logic, site architecture, and the privacy-first engineering decisions that power every tool.
View profile →Jason Smith, CFP
Financial Advisor & Reviewer
Certified Financial Planner who reviews retirement and Social Security calculators for accuracy, regulatory compliance, and sound financial planning principles.
View profile →Privacy & Transparency
We take privacy seriously because our tools deal with sensitive data — birth dates, health information, financial figures, and fertility data. Our privacy model is simple: we never see it.
Every tool is built so that your inputs are processed by JavaScript running in your own browser. No server ever receives your data. No database ever stores it. This isn't aspirational — it's structural.