Perform quick and reliable basic arithmetic operations: addition, subtraction, multiplication, and division. Includes percentage calculations and a clear history of your actions.

Advanced scientific calculations: trigonometry (sin, cos, tan), logarithms (log, ln), powers (xʸ), roots (√, ⁿ√x), exponentials (10ˣ, eˣ), factorial (n!), and constants (π, e). Supports DEG/RAD modes.

Calculate payments, total interest, and compare amortization systems. View the complete amortization schedule and make informed financing decisions.

Simulate your home loan with full PITI breakdown. US version includes property tax by state and PMI calculations for down payments under 20%.

Create secure passwords using local cryptography. Choose random password, passphrase, or pronounceable. 100% processed in your browser, no data sent.

Calculate Body Mass Index with age and gender-adjusted interpretation. Includes ideal weight range, CDC epidemiological statistics (NHANES 2023), progressive health warnings, and result export. Visual interface with animated body representation.

View all US federal holidays for any year with interactive calendar. Three visualization modes: list, grid, and timeline. Highlights next upcoming holiday and shows which holidays fall on weekends.

Calculate investment growth over time with compound interest. Supports monthly deposits, annual interest rates, and visualizes the power of compounding with interactive charts.