Loan Payment Calculator
Calculate monthly payments, total interest, and full cost of any loan.
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Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly.
Graphing Calculator
Plot up to 4 mathematical functions simultaneously on an interactive dark canvas. Pan, zoom, and explore math visually with GEMS colors.
Unit Converter
Convert between units of length, weight, temperature, volume, area, and speed. Fast, accurate, and free.
Discount Calculator
Calculate sale prices, savings, and final cost after discount. Optionally add sales tax for the true checkout price.
Area Calculator
Calculate the area and perimeter of squares, rectangles, circles, triangles, and trapezoids instantly.
Calorie Calculator
Calculate your daily calorie needs (TDEE) based on age, weight, height, gender, and activity level.
Age Calculator
Calculate your exact age in years, months, days, and weeks. Find out how many days until your next birthday.
Scientific Calculator
A full scientific calculator with trig functions, logarithms, exponents, and constants. Perfect for algebra, physics, and engineering.
Fraction Calculator
Add, subtract, multiply, and divide fractions instantly. Get simplified results with decimal equivalents.