Online Education Calculators

Calculators for study planning, final grades, weighted averages, and Pomodoro sessions.

By country

By topic

General

Evaluate powers, roots, logarithms and trigonometry with parentheses and degrees or radians.

Solve linear and quadratic equations. Find real or complex roots and check the discriminant.

Add, subtract, multiply or divide fractions. See the reduced fraction, mixed number and decimal with working.

Plan how many hours to study per day based on topics left, time per topic, and days until the exam.

Numerically integrate a function between two finite bounds. Check the approximate value and estimated numerical error.

Add, subtract and multiply 2×2 or 3×3 matrices. Also calculate the determinant, transpose and inverse.

Find the least common multiple and greatest common divisor of 2 to 10 positive integers. Follow each step of the Euclidean algorithm.

Calculate what score you need on the final exam to reach your target grade or pass a class.

Calculate your weighted average using credits, units, or percentage weights for each class or assignment.