Parabola Latus Rectum Calculator
Math
Parabola Latus Rectum with explicit inputs, formulas and domain checks.
Formula
For (x−h)²=4p(y−k), latus rectum length=4|p|.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- p is the signed vertex-to-focus distance in the standard parabola equation.
Example Calculation
Example inputs
- Signed focal parameter p: 2
p=2 gives latus rectum length8.
Frequently asked questions
How do I use this calculator?
Enter signed focal parameter p. The result updates automatically. Use Reset to restore the example values.
What method does it use?
For (x−h)²=4p(y−k), latus rectum length=4|p|.. p is the signed vertex-to-focus distance in the standard parabola equation.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.