Long Jump Calculator
How to Use
Select the calculation mode matching your available measurements. Choose consistent distance, speed, and angle units. Enter every required value before calculating.
Use projectile mode for take-off speed and angle modelling. Use official correction for board-loss analysis. Use comparison mode for consistency statistics.
Review warnings before using the result. Export useful summaries for coaching records. Real jumps can differ from simplified models.
Example Data
| Example | Speed | Angle | Take-off height | Wind | Purpose |
|---|---|---|---|---|---|
| Training attempt | 8.70 m/s | 19° | 1.00 m | 0.0 m/s | Baseline estimate |
| Competition attempt | 9.20 m/s | 20° | 1.05 m | 0.5 m/s | Wind-aware estimate |
| Target analysis | Solved | 21° | 1.05 m | 0.0 m/s | Required speed |
Important Notes
This tool models the athlete as a moving centre of mass. It does not reproduce every body position. Landing technique can change measured distance.
Wind and drag controls use simplified approximations. They support comparisons rather than official certification. Configure limits for your event rules.
A foul input marks the attempt invalid. Keep original measurements for record accuracy. Coaching decisions need qualified human judgement.
Frequently Asked Questions
What does projectile mode calculate?
It estimates horizontal distance, flight time, peak height, and landing velocity from launch conditions.
Why can theoretical distance differ from measured distance?
Body motion, landing posture, board position, wind, and measurement procedures change real outcomes.
What is board loss?
Board loss is the unused distance between the take-off toe and the take-off line.
How does target-speed mode work?
It searches numerically for a take-off speed that reaches the entered target distance.
Does the optimal-angle mode always match elite technique?
No. The mathematical optimum can differ from an athlete's practical and biomechanical optimum.
Can I enter feet and inches together?
Choose feet or inches for inputs. Results also show a combined feet-and-inches reading.
What does the consistency score mean?
It converts relative standard deviation into a simple higher-is-more-consistent percentage.
How is wind handled?
Wind adds a small configurable horizontal approximation based on flight time.
Can this replace official measurement?
No. Use approved event procedures and equipment for official competition results.