Math calculators

Everyday arithmetic, algebra, and geometry — worked out clearly.

Percentages, fractions, ratios, geometry, and the little calculations that come up all the time — with formulas you can reuse anywhere.

Calculators
63
Topics: All Percentage (75) Fractions (4) Geometry (63)
63 results
Math / Geometry

Right Triangle Calculator

From the two legs (a, b) of a right triangle, compute the hypotenuse, both acute angles, the area, and the perimeter.

basic
10,132 4.5 1 min
Math / Geometry

Ellipse Perimeter Calculator

Compute the perimeter of an ellipse from its semi-major (a) and semi-minor (b) axes using Ramanujan's second approximati...

basic
18,175 4.8 1 min
Math / Geometry

Pythagorean Theorem Calculator

Find the hypotenuse from two legs, or recover a missing leg from the hypotenuse and the other leg, using the Pythagorean...

Featured basic
7,325 4.0 1 min
Math / Geometry

Cross Product Calculator

Compute the cross product (vector product) of two 3-dimensional vectors, plus its magnitude — useful for torque, angular...

basic
1,412 4.8 1 min
Math / Geometry

Distance Between Two Points (2D)

Compute the straight-line distance between two points (x₁, y₁) and (x₂, y₂) in the plane, plus the slope of the line thr...

basic
22,062 4.5 1 min
Math / Geometry

Midpoint Calculator

Find the coordinates of the midpoint of the segment connecting two points in the plane.

basic
9,510 3.8 1 min
Math / Geometry

Trigonometry Calculator

Compute sine, cosine, tangent, secant, cosecant, and cotangent of any angle in degrees or radians.

basic
5,200 3.9 1 min
Math / Geometry

Inverse Trigonometry Calculator

Compute the inverse-sine, inverse-cosine, and inverse-tangent of a value, returning the result in both radians and degre...

basic
1,597 4.4 1 min
Math / Geometry

Square Calculator

Get the area, perimeter, and diagonal of a square from its side length.

basic
8,871 4.2 1 min
Math / Geometry

Sector Area Calculator

Compute the area of a circular sector ("pie slice") from the radius and the central angle in degrees.

basic
1,866 4.2 1 min
Math / Geometry

Arc Length Calculator

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

basic
20,219 3.9 1 min
Math / Geometry

Trapezoid Area Calculator

Calculate the area of a trapezoid given the lengths of its two parallel bases and the perpendicular height between them.

basic
3,114 4.5 1 min
Math / Geometry

Cone Volume Calculator

Compute the volume, slant height, and lateral surface area of a right circular cone from its radius and height.

basic
373 4.9 1 min
Math / Geometry

Hexagon Calculator

Compute the area, perimeter, long diagonal, and short diagonal of a regular hexagon from any side length.

basic
22,643 4.7 1 min
Math / Geometry

Slope Calculator

Find the slope of the line through two points, plus the line equation in slope-intercept form.

basic
18,012 4.4 1 min
Math / Geometry

Ellipse Calculator

Compute the exact area and Ramanujan-approximated perimeter of an ellipse from the lengths of its semi-major and semi-mi...

basic
16,492 4.8 1 min