Smart Simulators, Calculators & Everyday Utilities
Accurate real-time calculations, secure, and 100% processed directly in your browser. Select a calculator below to get started.
Compound Interest
Simulate long-term investment growth with compound interest. Calculate deposits, interest rate and total returns.
Loan Amortization
Calculate monthly payments, total interest, and complete amortization schedule for fixed and variable loans.
Percentage
Easily calculate percentage discounts, percent increase/decrease, what percent X is of Y, and simple percentages.
TDEE & Macros
Calculate your Basal Metabolic Rate (BMR), Total Daily Energy Expenditure (TDEE), and optimal macro split (Protein/Carb/Fat).
BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units. See WHO weight categories and recommended ideal weight.
Date Difference
Calculate calendar days, workdays (business days), weeks and months between two dates, or add days to a date.
Password Generator
Generate ultra-secure, cryptographically strong passwords locally in your browser. Measure entropy and brute-force time.
JSON Formatter
Beautify, format, validate, and minify JSON data instantly with precise line-by-line syntax error diagnostics.
Word Counter
Count words, characters (with and without spaces), sentences, paragraphs, and estimate reading and speaking time.