Search math calculators
Results: 9
Area Calculator
Calculate areas of common plane shapes, including sectors and triangles from three sides, with independent input-unit options.
Circle Calculator
Find a circle's radius, diameter, circumference and area from any one of those measurements using consistent length units.
Distance Calculator
Calculate coordinate distance or spherical great-circle distance from decimal or degree-minute-second latitude and longitude.
Pythagorean Theorem Calculator
Find a right triangle's hypotenuse from two perpendicular legs, or recover one leg from the hypotenuse and the other leg.
Right Triangle Calculator
Solve a right triangle from supported pairs of known measurements, returning sides, angles, area and possible alternate solutions.
Slope Calculator
Find slope and a line equation from two points, or determine endpoints from a point, distance and direction.
Surface Area Calculator
Calculate total surface areas of common solids, including cap bases and hollow-cylinder surfaces, with the ellipsoid approximation disclosed.
Triangle Calculator
Solve SSS, SAS, ASA or ambiguous SSA triangles, with angles, area and derived measurements such as altitudes, medians and radii.
Volume Calculator
Find volumes of common solids, including hollow cylinders, frustums and spherical caps, with selectable measurement units.
Matching geometry formulas to shapes
Start with the shape and the quantities already known. A right triangle has an additional angle constraint that a general triangle does not. Circle measurements distinguish radius from diameter, and solid shapes distinguish surface area from volume. Selecting the correct geometric case is part of solving the problem.
Use compatible length units and match perpendicular heights to their bases. The resulting area uses squared units and volume uses cubic units. For irregular objects, a combination of simpler shapes may fit better than a single idealized formula.
Compare the questions
| Choose a method | Inputs | Method |
|---|---|---|
| Triangle Calculator Three sides |
| s = (a+b+c)/2; area = √[s(s−a)(s−b)(s−c)]. How it works |
| Volume Calculator Sphere |
| V = 4πr³/3. How it works |