Every calculator group stays visible on one page, with compact cards so you can open the exact tool you need without scrolling through a large intro first.
Calculate triangle properties, areas, angles, and solve triangle problems
Simple area calculation using base and height formula
Check triangle inequality and side relationships
Calculate angles in isosceles triangles given one angle
Solve triangles using the law of sines
Solve triangles using the law of cosines
Calculate circle areas, circumferences, sectors, and related properties
Calculate sector area and arc length
Calculate area of ring-shaped regions
Ellipse, hyperbola, and parabola calculators with step-by-step work and live SVG previews
Compute ellipse parameters, foci, area, and latus rectum
Compute asymptotes, eccentricity, foci, and standard form
Compute focus, directrix, equation, and latus rectum
Calculate properties of squares, rectangles, parallelograms, and trapezoids
Calculate square properties from side length
Calculate parallelogram area and perimeter
Calculate trapezoid area using parallel sides and height
Vector operations, dot products, and geometric applications
Calculate dot products and find angles between vectors
Calculate vector length and unit vectors
Check if vectors are collinear (parallel)
Check if vectors are perpendicular using dot product
Solid geometry and 3D vector tools for volumes, surface areas, and spatial angles
Compute volume, lateral area, and surface area for common solids
Compute angles between vectors, lines and planes, and two planes
Vector add/subtract, dot/cross product, magnitude, and angle
Trigonometric functions, identities, and geometric applications
Calculate sine, cosine, tangent with unit circle visualization
Verify and calculate trigonometric identities
Calculate sum and difference formulas for trigonometric functions
Apply induction formulas for trigonometric reduction
Count segments formed by points and other line-based essentials
Calculate how many segments are formed by n points (C(n,2))