# Geometry Calculators

- **URL:** https://codeasystem.com/calculators/geometry/
- **Markdown index:** https://codeasystem.com/calculators/geometry/index.md
- **Calculators in this category:** 9

Geometry calculators for circle, triangle and polygon areas, solid volumes, the Pythagorean theorem and point distances.

Focus areas: Areas, volumes, angles and distances.

## All calculators
- [Circle Calculator](https://codeasystem.com/calculators/geometry/circle-calculator.md); Enter a radius to get a circle’s area, circumference and diameter instantly, all from π-based formulas.
- [Triangle Area Calculator](https://codeasystem.com/calculators/geometry/triangle-area-calculator.md); Get triangle area from base and height, or from all three sides via Heron’s formula; no height needed.
- [Pythagorean Theorem Calculator](https://codeasystem.com/calculators/geometry/pythagorean-theorem-calculator.md); Solve right triangles: find the hypotenuse from two legs, or the missing leg from hypotenuse and one leg.
- [Rectangle Area & Perimeter Calculator](https://codeasystem.com/calculators/geometry/rectangle-area-perimeter-calculator.md); Compute a rectangle’s area, perimeter and corner-to-corner diagonal from length and width, with optional units.
- [Trapezoid Area Calculator](https://codeasystem.com/calculators/geometry/trapezoid-area-calculator.md); Find trapezoid area from its two parallel bases and height using the averaged-base formula.
- [Sphere Volume & Surface Area Calculator](https://codeasystem.com/calculators/geometry/sphere-volume-surface-calculator.md); From one radius, get a sphere’s volume and total surface area using the classic 4⁄3πr³ and 4πr² formulas.
- [Cylinder Volume Calculator](https://codeasystem.com/calculators/geometry/cylinder-volume-calculator.md); Compute cylinder volume from radius and height, with total surface area and base area alongside.
- [Cone Volume Calculator](https://codeasystem.com/calculators/geometry/cone-volume-calculator.md); Get cone volume from radius and height, plus slant height and lateral surface area for material estimates.
- [Distance Between Two Points Calculator](https://codeasystem.com/calculators/geometry/distance-between-points-calculator.md); Measure straight-line Euclidean distance between two points in 2D or 3D space via the Pythagorean-based formula.

Each link above points to the full Markdown reference for that calculator (inputs, formula, worked example, FAQs). The interactive HTML version lives at the same path without the `.md` suffix.

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Last updated: 2026-08-23 · [Section overview](https://codeasystem.com/calculators/index.md)