Calculation Methodology
How the original Calc for Class calculators compute and display results.
Scientific calculator
Expressions are evaluated in the browser after restricting the accepted characters and supported functions. Degree mode converts trig inputs and inverse-trig outputs.
Statistics calculator
Data are sorted before median and quartile calculations. The tool reports both population and sample standard deviation.
Matrix calculator
The current tool supports 2×2 addition, subtraction, multiplication, determinant and inverse.
Fraction calculator
Integer fraction inputs are reduced with the greatest common divisor and may be shown as a mixed number.
Financial calculator
Loan payments assume a fixed rate and equal payments. NPV uses equally spaced periods; IRR is numerically estimated.