Formula Used
Relative squat strength = squat one rep max ÷ body weight.
Base jump = 22 + ((relative squat strength − 1) × 18).
Estimated jump = base jump × depth factor × style factor × jump factor × technique factor × fatigue factor + skill bonuses.
Takeoff velocity = √(2 × 9.80665 × jump height in meters).
Flight time = 2 × takeoff velocity ÷ 9.80665.
Peak power estimate = 60.7 × jump height in cm + 45.3 × body mass in kg − 2055.
This is a coaching estimate. It is not a lab force plate result.
How To Use This Calculator
Enter body weight and squat one rep max first. Select matching units. Add your current vertical jump if you have one. Add a target jump to estimate the squat level needed. Choose squat depth, squat style, and jump type. Rate technique, mobility, fatigue, and plyometric skill. Press calculate. The result appears above the form.
Example Data Table
| Body Weight |
Squat 1RM |
Relative Strength |
Jump Type |
Estimated Jump |
| 70 kg |
120 kg |
1.71 x |
Standing |
35.44 cm |
| 82 kg |
155 kg |
1.89 x |
Countermovement |
45.83 cm |
| 95 kg |
210 kg |
2.21 x |
Approach |
58.20 cm |
Why squat strength helps jump testing
A vertical jump is a fast display of force. A squat is a slower display of force. The two tests are not identical, yet they are linked. Strong legs give an athlete more room to create impulse. Impulse lifts the body upward. The calculator uses that idea in a practical way. It converts a squat number into a jump estimate. It also adjusts the estimate for technique, fatigue, depth, and jump style.
What the estimate can show
The result can show whether strength is limiting jump height. A high squat with a low jump may suggest poor rate of force development. It may also show a timing issue. A low squat with a fair jump can point to good elastic skill. It may also show that strength work could raise the ceiling. Coaches can use the gap between current and estimated jump height. That gap helps guide training choices.
Useful inputs for better accuracy
Body weight matters because jumping moves body mass. A heavier athlete needs more force for the same height. Relative squat strength is therefore more useful than raw load. Squat depth also matters. A deep squat uses a different range than a high squat. Jump type changes the result as well. An approach jump usually beats a standing jump. Fatigue lowers output during testing. Technique can raise or reduce the final value.
How to use the numbers
Use the estimate as a planning guide. Do not treat it as a medical test. Record the same units each time. Test at similar times of day. Warm up in the same order. Use the same jump method for fair comparison. Save the CSV file for team records. Download the PDF for a simple coaching report.
Training interpretation
If the predicted jump is far above the current jump, add plyometrics. Add landing drills and fast intent work. If the current jump is close to the estimate, build maximal strength. If both values are low, use a balanced plan. Improve squat strength, mobility, and jumping skill together. Retest every few weeks. Also keep notes about sleep, soreness, shoes, and testing surface quality too. Small changes are normal. Large changes should match a real training block.
FAQs
1. What does this calculator estimate?
It estimates vertical jump height from squat strength, body weight, technique, fatigue, jump type, and training factors. It also gives power, velocity, flight time, and target squat estimates.
2. Is squat strength the only factor in jumping?
No. Jumping also depends on speed, coordination, tendon stiffness, mobility, body mass, and technique. The squat number gives a useful strength base only.
3. Which squat value should I enter?
Enter a true or estimated one rep max. Use the same squat style each time. Consistent testing makes progress tracking more useful.
4. Why does body weight matter?
Vertical jumping moves your own mass. Two athletes with the same squat may jump differently if their body weights are different.
5. What is relative squat strength?
Relative squat strength is squat one rep max divided by body weight. It shows how strong the athlete is compared with their size.
6. Why include fatigue percent?
Fatigue can reduce jump output during testing. A tired athlete may have strength available but fail to express it quickly.
7. Can this replace jump testing?
No. It should support testing, not replace it. Use a measured jump mat, force plate, or consistent wall test when possible.
8. How often should I retest?
Retest every three to six weeks. Use the same warmup, surface, shoes, squat style, and jump method for better comparisons.