Mathematics Calculators

Percentages, equations, geometry, algebra and more math tools.

Compute the absolute and percentage change between an initial and final value.

Enter two points (x₁,y₁) and (x₂,y₂) to find the straight-line distance on a plane — for map measurement, geometry and coordinate planning.

Compute the arc length of a circle from radius and central angle.

Compute the Euclidean distance between two points in 3D space.

Compute the nth term and sum of an arithmetic sequence.

Compute the nth term, finite sum and (if |r|<1) infinite sum of a geometric sequence.

Compute the central angle of a circle arc from arc length and radius.

Compute a weighted average from scores and their weights.

Compute percent change, profit/loss percentage, discount price, x% of y, and percent increase/decrease.

Compute increase/decrease between two values, and reverse (find initial from final + %).

Compute the standard score z = (x − μ) / σ.

Compute population or sample variance of a data set.