newton to lb ft s 2
The unit lb·ft/s² — mass in pounds times acceleration in feet per second squared — is the poundal, the English system's direct mirror of the newton. This converter translates N into poundals exactly.
The Converter
N → lb·ft/s²Total Working
| Newtons (N) | Poundals (lb·ft/s²) |
|---|---|
| 1 | 7.233 |
| 5 | 36.1651 |
| 10 | 72.3301 |
| 25 | 180.8253 |
| 50 | 361.6507 |
| 100 | 723.3014 |
| 250 | 1,808.2535 |
| 500 | 3,616.5069 |
| 1,000 | 7,233.0139 |
| 5,000 | 36,165.0693 |
The exact factor
1 N = 7.2330138512 lb·ft/s² (poundals)
Derived from the defined constants 1 lb = 0.45359237 kg and gₙ = 9.80665 m/s² — no measurement error, only display rounding.
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Newtons To LBS home →What lb·ft/s² actually is
Just as 1 N accelerates 1 kg at 1 m/s², one poundal accelerates 1 lb of mass at 1 ft/s². Converting the newton's parts: 1 kg = 2.2046226 lb and 1 m/s² = 3.2808399 ft/s², so 1 N = 2.2046226 × 3.2808399 = 7.2330139 poundals.
Example: 100 N = 723.30 lb·ft/s².
Poundal vs pound-force
Don't confuse the two English force units. A pound-force uses gravity as the multiplier (1 lbf = 1 lb × 32.174 ft/s² = 32.174 poundals), while the poundal uses unit acceleration. That's why 1 N is 7.233 poundals but only 0.2248 lbf.
Poundals appear in older physics texts and F = ma problems worked in feet and pounds without a gravity constant.
Frequently asked
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