Terminus Calculator
Calculate endpoint coordinates from starting position, distance, and angle
What is a Terminus Calculator?
A tool that calculates endpoint coordinates when given a starting position, travel distance, and angle. Used in navigation, engineering, and physics for precise coordinate determination.
How does it work?
Using trigonometric formulas: Xend = Xstart + (distance × cos(angle)) and Yend = Ystart + (distance × sin(angle)). Converts degrees to radians automatically.
What units should I use?
Coordinates and distance can use any consistent units (meters, feet, etc.). Angles must be in degrees (0-360). The calculator maintains unit consistency.
How should I enter angles?
0° = right (+X), 90° = up (+Y), 180° = left (-X), 270° = down (-Y). Negative angles work (rotate clockwise) and values >360° auto-convert to standard range.
Does it support negative coordinates?
Yes – negative starting positions work perfectly. The calculator handles all valid real numbers for coordinates.
Can I use this for 3D space?
No – this is strictly for 2D Cartesian coordinates. For 3D calculations, you’d need elevation angles and Z-axis values.
Is it mobile-friendly?
Yes – fully responsive design works on all devices including smartphones and tablets with touch support.
How precise are the results?
Displays 4 decimal places for accuracy while using JavaScript’s full floating-point precision internally.
What are common applications?
Navigation systems, robotic movement planning, physics simulations, game development, and any scenario requiring precise endpoint calculation from vector movement.
What happens with invalid input?
The calculator validates all entries – non-numeric inputs trigger clear error messages until corrected.