Math

Calculate the area of a standard track or stadium shape. Enter the straightaway length and radius for fast, accurate results.

Generate printable vertical addition, subtraction, multiplication, and division worksheets with configurable ranges and answers.

Free online cone calculator to quickly find the volume, surface area, lateral surface area, and base area of a cone.

Input window width, pleat multiplier, and fabric width to quickly calculate how many meters of fabric a single curtain needs—avoid buying excess or falling short.

Input mean and standard deviation to quickly calculate the cumulative probability or quantile corresponding to a value.

Quickly calculate the speed of sound propagation in air based on temperature, humidity, and air pressure; supports real-time conversion.

Provides an addition table up to 10 in image format, available for printable download.

Calculate the area of a regular pentagon based on its side length, perimeter, or diagonal. Ideal for math studies and engineering calculations.

Calculate the area of a triangle using base and height, two sides and the included angle, or Heron's formula. Ideal for math studies and engineering measurements.

Free online continued fraction calculator. Expand any real number or fraction into a continued fraction, or convert a sequence back into a rational number. Instantly calculate convergents and best rational approximations.

Enter length, width, and height to instantly calculate the base area, lateral surface area, total surface area, volume, and total edge length of a rectangular prism.

Online unit conversion tool for resistors, capacitors, and inductors.

Enter the length and width to automatically calculate the area of a rectangle. Ideal for math learning and engineering measurements.

Input room dimensions and doors/windows room by room, automatically calculate area and estimate tile, paint, and other material quantities

Free online complex number calculator. Add, subtract, multiply, and divide two complex numbers instantly. Perfect for circuit analysis and signal processing.

Calculate the interest and maturity value of an installment savings deposit online. Enter your monthly deposit, term, and annual interest rate to see your total interest and final balance instantly.

Quickly generate a subtraction chart up to 10. Supports printing and PDF downloads.

Enter the number of sides and side length to quickly calculate the area of any regular polygon. Ideal for geometry students and engineering calculations.

Estimate projector installation distance using screen, display panel, and lens specifications

Quickly calculate the area and perimeter of a square by entering its side length. Ideal for students and engineering tasks.