Convert lying dumbbell triceps extension weight to overhead triceps extension weight, or reverse it, using your chosen factor and kg or lb units.
Disclaimer: This calculator provides a rough training estimate—not medical advice. The result is arithmetic under an assumed factor, not a safe starting-load prescription. Start light, use controlled form, and increase gradually. Stop if you feel pain, and consult a qualified trainer or clinician if you have shoulder/elbow issues or are returning from injury.
Lying Dumbbell Triceps Extension to Overhead Triceps Extension Conversion Formula (Estimate)
The following formula is used to estimate the overhead extension weight based on the lying dumbbell triceps extension (skull crusher) weight.
Variables:
- OE is the Overhead Extension weight (in chosen units)
- DTE is the Lying Dumbbell Triceps Extension (Skull Crusher) weight (in chosen units)
- CF is an assumed factor. The original 0.90–1.10 choices are hypothetical scenarios, not a tested universal range.
To estimate the overhead extension equivalent, multiply DTE by the chosen conversion factor (CF). Conversely, to estimate DTE from an overhead extension value, divide OE by CF.
| Lying DB Triceps Extension (DTE) | Overhead Triceps Extension (OE) |
|---|---|
| 2.50 | 2.75 |
| 5.00 | 5.50 |
| 7.50 | 8.25 |
| 10.00 | 11.00 |
| 12.50 | 13.75 |
| 15.00 | 16.50 |
| 17.50 | 19.25 |
| 20.00 | 22.00 |
| 22.50 | 24.75 |
| 25.00 | 27.50 |
| 27.50 | 30.25 |
| 30.00 | 33.00 |
| 32.50 | 35.75 |
| 35.00 | 38.50 |
| 37.50 | 41.25 |
| 40.00 | 44.00 |
| 42.50 | 46.75 |
| 45.00 | 49.50 |
| 47.50 | 52.25 |
| 50.00 | 55.00 |
| Example mathematical estimate using OE ≈ 1.10 × DTE. In practice, round to the nearest available dumbbell/plate increment (use the calculator’s rounding setting). | |
Understanding the Conversion
This calculation applies a chosen assumption when comparing lying and overhead dumbbell triceps extensions. Use the same per-hand or total-load basis for both inputs. Technique, range of motion, fatigue and equipment setup affect performance; the result does not predict strength or a safe lifting load.
How to Calculate the Overhead Extension Equivalent?
Follow these steps to estimate the overhead extension weight:
- Measure the weight (DTE) used for lying dumbbell triceps extensions (skull crusher style).
- Choose an assumed factor from matched personal records or a hypothetical scenario (for example, 1.00, 1.05, or 1.10). No universal ratio is established.
- Calculate the overhead extension weight using the formula: OE = DTE × CF.
- To estimate DTE from an overhead extension value, divide the overhead extension weight by CF.
- Optionally round the result to the nearest available weight increment.
Example Problem:
Assume a lying dumbbell triceps extension weight (DTE) of 40 pounds. Using CF = 1.10:
OE = 40 × 1.10 = 44 pounds
