Enter either a leg press load or a squat load to get a rough estimate of the other. This is a rule-of-thumb conversion that can vary a lot depending on the machine, setup, and how you lift.
Safety note: This tool gives an estimate only. Don’t treat the calculated squat number as a target load—start lighter, progress gradually, and use proper technique/spotting. If you have pain, a recent injury, or a medical condition, consult a qualified clinician or coach.
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Leg Press to Squat Load Estimate Formula
The following rule-of-thumb formula can be used to estimate a squat load from a leg press load.
SQ \approx LP \times CF
Variables:
- SQ is the estimated Squat Load
- LP is the Leg Press Load
- CF is a user-chosen conversion factor (a common starting point is 0.65)
Note: CF can vary substantially depending on sled angle, machine friction, starting depth/range of motion, foot placement, tempo/pauses, whether you’re comparing 1RM vs multiple reps, and individual biomechanics/training history.
To estimate the squat load, multiply the leg press load by CF. Conversely, to estimate a leg press load from a squat load, divide the squat load by CF.
| Leg Press (kg or lbs) | Estimated Squat (kg or lbs) |
|---|---|
| 40 | 26 |
| 60 | 39 |
| 80 | 52 |
| 100 | 65 |
| 120 | 78 |
| 140 | 91 |
| 160 | 104 |
| 180 | 117 |
| 200 | 130 |
| 220 | 143 |
| 240 | 156 |
| 260 | 169 |
| 280 | 182 |
| 300 | 195 |
| 320 | 208 |
| 340 | 221 |
| 360 | 234 |
| 380 | 247 |
| 400 | 260 |
| 420 | 273 |
| Uses a 0.65 ratio: Estimated Squat ≈ 0.65 × Leg Press. Inverse: Estimated Leg Press ≈ 1.538 × Squat. Works for kg or lbs. | |
This example table does not account for sled angle, friction, sled starting weight, foot placement, depth/range of motion, tempo/pauses, or unilateral vs bilateral differences—any of these can materially change how comparable two lifts feel.
What is the Leg Press to Squat Load Estimate?
This conversion is a rough estimate of a squat load based on the load used on a leg press machine. Because leg press machines often let you move a greater load due to machine assistance and different biomechanics, a commonly used rule of thumb is that the squat may be around 65% of the leg press load—though the true relationship can vary widely across machines and lifters.
How to Estimate the Squat Load?
Follow these steps to estimate the squat load:
- Determine the load used on the leg press machine (LP).
- Choose a conversion factor (CF). A common starting point is 0.65.
- Multiply the leg press load by CF to estimate the squat load: SQ ≈ LP × CF.
- If you have the squat load and wish to estimate a leg press load, divide the squat load by CF.
- Compare your estimate using the calculator above.
Example Problem:
If the leg press load is 300 pounds, the estimated squat load (using CF = 0.65) would be:
300 × 0.65 = 195 pounds
