How to use this calculator
- Enter current body weight.
- Enter external load for the pull-up test; assistance may be negative.
- Enter measured maximum hang force in kilogram-force.
- Compare ratios only across the same testing protocol.
#2798 · Sports & Gaming Tool
Climbing Grade Power to Weight Calculator
Calculate climbing-relevant strength-to-weight measures from body weight, added pull-up load, and maximum hang force. The page reports total pull-up system load relative to body weight, added-load percentage, and hang-force ratio. These measurements can help track personal strength changes when the same equipment and protocol are used. They do not directly predict a climbing grade or replace movement skill.
Calculator
Body mass and strength testsFormula
Pull ratio = (body weight + added load) ÷ body weight
Hang ratio = maximum hang force ÷ body weight
Hang ratio = maximum hang force ÷ body weight
What the result means
A pull ratio of 1.50 means the tested pull-up system load equals 150% of body weight. Ratios normalize for body mass but do not capture technique, finger position, endurance, or contact strength.
Maximum testing can stress fingers, elbows, and shoulders. Use appropriate preparation, equipment, and qualified coaching.
Example calculation
At 70 kg body weight with 35 kg added, total pull-up load is 105 kg and the pull ratio is 1.50×. A 90 kgf hang measurement gives a 1.29× hang-force ratio.
Tips for better results
- Standardize grip width and range of motion.
- Use the same hang edge and grip position.
- Record equipment and assistance accurately.
- Avoid maximal tests when injured or poorly warmed up.
- Track absolute strength alongside ratios.
Frequently asked questions
Does added pull-up load include body weight?
No. Enter only the external added load; the calculator adds body weight to obtain total system load.
How do I enter an assisted pull-up?
Enter assistance as a negative added-load value, such as −20 kg.
Is kilogram-force the same as kilograms of mass?
No, but kgf is commonly used as a force display on climbing test devices; keep the device and protocol consistent.
Can this predict my climbing grade?
No. Strength-to-weight is only one contributor among technique, tactics, mobility, endurance, and experience.
Can I compare two different hangboard edges?
Direct comparison is weak because edge depth and shape materially affect measured force.
Related calculators
Strength-to-weight measures
| Measure | Definition | Unit |
|---|---|---|
| Total pull load | body weight + added load | kg |
| Pull ratio | total pull load ÷ body weight | × body weight |
| Added-load percentage | added load ÷ body weight × 100 | % |
| Hang-force ratio | hang force ÷ body weight | × body weight |