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Calcimator

2D Shape Master Calculator

Complete 2D geometry calculator for all common shapes — rectangles, squares, circles, triangles, ellipses, parallelograms, rhombuses, trapezoids, and regular polygons. Calculate area, perimeter, angles, and more.

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How to Use This Calculator
  1. Follow the step-by-step wizard — complete each step before moving to the next. This guided approach ensures you provide all the necessary information in a logical order.
  2. Shape — The geometric shape to calculate. Choose from: Rectangle, Square, Circle, Triangle (3 Sides), Triangle (Base × Height), Ellipse, Parallelogram, Rhombus, Trapezoid, Regular Polygon. default: 0.
  3. Unit System — Measurement system (imperial or metric). Choose from: Imperial (feet), Metric (meters). default: 0.
  4. Length — Length of the rectangle Accepts values from 0.01 to 100,000 (default: 10).
  5. Width — Width of the rectangle Accepts values from 0.01 to 100,000 (default: 8).
  6. Side Length — Side length of the square Accepts values from 0.01 to 100,000 (default: 10).
  7. Circle Input Type — enter your preferred option from the dropdown. Choose from: Radius, Diameter, Circumference, Area. default: 0.
  8. Radius — Distance from center to edge. Accepts values from 0.01 to 100,000 (default: 5).
  9. Diameter — Distance across the full shape. Accepts values from 0.01 to 100,000 (default: 10).
  10. Circumference — enter a numeric value. Accepts values from 0.01 to 1,000,000 (default: 31.416).
  11. Area (known) — enter a numeric value. Accepts values from 0.01 to 10,000,000 (default: 78.54).
  12. Side a — Length of side A. Accepts values from 0.01 to 100,000 (default: 5).
  13. Side b — Length of side B. Accepts values from 0.01 to 100,000 (default: 7).
  14. Side c — Length of side C. Accepts values from 0.01 to 100,000 (default: 8).
  15. Base — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 10).
  16. Height — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 6).
  17. Semi-Major Axis (a) — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 8).
  18. Semi-Minor Axis (b) — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 5).
  19. Base — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 12).
  20. Height — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 8).
  21. Side Length — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 10).
  22. Diagonal 1 — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 10).
  23. Diagonal 2 — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 8).
  24. Base 1 (longer) — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 15).
  25. Base 2 (shorter) — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 10).
  26. Height — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 6).
  27. Number of Sides — enter a numeric value. Accepts values from 3 to 100 (default: 6).
  28. Side Length — enter a numeric value. Accepts values from 0.01 to 100,000 (default: 5).
  29. Expand "Advanced Options" for additional fine-tuning. These optional inputs let you model more specific scenarios:
  30. Sector Angle — enter a number in °. Accepts values from 0 ° to 360 ° (default: 360 °).
  31. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  32. Area — shown as a numeric value. This is the primary result of this calculator.
  33. Perimeter — shown as a numeric value.
  34. Shape — your calculated result.
  35. Formula — your calculated result.
  36. Area (m²) — shown as a numeric value.
  37. Area (sq in) — shown as a numeric value.
  38. Area (acres) — shown as a numeric value.
  39. Diagonal — shown as a numeric value.
  40. Radius — shown as a numeric value.
  41. Diameter — shown as a numeric value.
  42. Sector Area — shown as a numeric value.
  43. Arc Length — shown as a numeric value.
  44. Triangle Type — your calculated result.
  45. Angle A — shown as a numeric value.
  46. Angle B — shown as a numeric value.
  47. Angle C — shown as a numeric value.
  48. Height — shown as a numeric value.
  49. Inradius — shown as a numeric value.
  50. Circumradius — shown as a numeric value.
  51. Eccentricity — shown as a numeric value.
  52. Focal Distance — shown as a numeric value.
  53. Apothem — shown as a numeric value.
  54. Interior Angle — shown as a numeric value.
  55. Central Angle — shown as a numeric value.
  56. View the Shape Properties below for a visual breakdown of how the numbers relate to each other.
  57. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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