How to use the bungee cord stretch calculator
Estimate the maximum stretch of a bungee cord and the lowest point of a jump. Enter jumper mass, cord stiffness, free fall before cord tightens in the fields above; the maximum stretch, lowest point below platform are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “bungee jump length”, “how far does the cord stretch”, “elastic cord fall”, “calculate bungee cord stretch”, “find maximum stretch”.
Formula
Variables
- m — Jumper mass (kg)
- k — Cord stiffness (N/m)
- hf — Free fall before cord tightens (m)
Worked example
With jumper mass = 70 kg, cord stiffness = 60 N/m, free fall before cord tightens = 30 m, the calculator gives maximum stretch ≈ 40.03067 m; lowest point below platform ≈ 70.03067 m.
Frequently asked questions
What is the bungee cord stretch calculator used for?
Estimate the maximum stretch of a bungee cord and the lowest point of a jump. It helps with questions such as “bungee jump length”, “how far does the cord stretch”, “elastic cord fall”.
What is the formula for the bungee cord stretch calculation?
Maximum stretch (m) = (m × GRAV+√((m × GRAV)^2+2 × k × m × GRAV × hf)) / k. Lowest point below platform (m) = hf+[Maximum stretch]. Here m is jumper mass (kg), k is cord stiffness (N/m), hf is free fall before cord tightens (m).
What inputs do I need for the bungee cord stretch calculator?
You need jumper mass in kg, cord stiffness in N/m, free fall before cord tightens in m. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the bungee cord stretch calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the bungee cord stretch result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.