Free smart calculators for real life.

Health, finance, real estate, lifestyle, business and more—quick answers with human-friendly explanations.

Smart Mode (no AI, just clever rules)

Why MaximCalculator?

  • ✅ Clear answers with simple explanations
  • ✅ 10+ categories for every part of life
  • ✅ Designed for mobile and desktop
  • ✅ No sign-up, no ads cluttering the screen

Main calculator categories

The core calculators you’ll use most often—built for accuracy and clarity.

💪

Health & Fitness

BMI, BMR, ideal weight, calories, body fat & more.

Health
💰

Finance

Loan, mortgage, interest, savings and investment tools.

Money
🏠

Real Estate

Rent vs buy, affordability, cap rate, ROI on properties.

Property
🧮

Everyday Tools

Age, discount, date difference, tip, pace and more.

Daily life
📐

Math & Conversions

Percentages, ratios, geometry, unit conversions & more.

Math

Lifestyle, fun & wellbeing

Viral, lifestyle and psychology calculators that are fun, helpful, and shareable.

🌿

Lifestyle & Wellness

Sleep time, water intake, step goals and everyday wellbeing tools.

Lifestyle Coming soon
🎉

Fun & Viral Calculators

Sleep, love, compatibility, reaction time and other viral-friendly tools.

Viral
🧠

Psychology & Well-being

Stress score, happiness index, burnout risk and mindset tools.

Mind Coming soon

Pro tools for founders & builders

Business and “smart” advisor tools to estimate cashflow, runway and next steps.

📊

Business & Entrepreneur Tools

MRR, ARR, CAC, LTV, ad ROI, break-even and pricing calculators.

Business Coming soon
🧭

Smart / Advisor Tools

Rule-based “advisor” calculators that give simple, next-step guidance.

Smart Coming soon

New & upcoming categories

We’re expanding MaximCalculator with even more tools for creators, families and real life.

🤖

AI & Creator Tools

Token cost, YouTube revenue, content helper tools & more.

Coming soon
🧒

Kids & School Tools

GPA, grade targets, study time and school-life helpers.

Coming soon
🏡

Home & Productivity

Cleaning schedules, packing planners and organization tools.

Coming soon
🎄

Seasonal & Event Tools

Holiday ideas, resolutions, party planners and fun generators.

Coming soon