The foot-pound per second is an intriguing unit of power that encapsulates the essence of energy transfer in mechanical systems. A single foot-pound per second equates to the rate at which one pound-force transfers energy across a distance of one foot in a second. Lesser-known than its metric counterpart, the watt, foot-pound per second offers insight into the blend of force, distance, and time that’s crucial to understanding mechanical work.
Interestingly, the unit serves as a bridge between imperial and metric systems, with one foot-pound per second equivalent to approximately 1.3558 watts. This conversion showcases the interconnectedness of diverse measurement systems. The unit highlights the ingenuity of early inventors and engineers like James Watt, whose advancements in engine technology continue to influence how we conceptualize power and efficiency today.
Horsepower (metric) is a fascinating unit of measurement that dates back to the 18th century, when James Watt, the developer of the steam engine, sought to compare the power output of his engines to that of draft horses. The metric horsepower is defined as the amount of power required to lift a 75-kilogram mass one meter vertically in one second, which is equivalent to 735.5 watts. Interestingly, this unit persists in many regions, particularly in the automotive industry, where it is used to convey the strength of vehicle engines. Despite advancements in engine technology, the image of raw horsepower continues to captivate our imagination, embodying both history and precision engineering.
| Foot-pounds per second | Horsepower (metric) |
|---|---|
0
ft-lb/s
|
0
PS
|
100
ft-lb/s
|
0.18434
PS
|
200
ft-lb/s
|
0.36868
PS
|
300
ft-lb/s
|
0.55302
PS
|
400
ft-lb/s
|
0.73736
PS
|
500
ft-lb/s
|
0.9217
PS
|
600
ft-lb/s
|
1.10604
PS
|
700
ft-lb/s
|
1.29038
PS
|
800
ft-lb/s
|
1.47472
PS
|
900
ft-lb/s
|
1.65906
PS
|
1000
ft-lb/s
|
1.8434
PS
|
1100
ft-lb/s
|
2.02774
PS
|
1200
ft-lb/s
|
2.21208
PS
|
1300
ft-lb/s
|
2.39642
PS
|
1400
ft-lb/s
|
2.58076
PS
|
1500
ft-lb/s
|
2.7651
PS
|
1600
ft-lb/s
|
2.94944
PS
|
1700
ft-lb/s
|
3.13378
PS
|
1800
ft-lb/s
|
3.31812
PS
|
1900
ft-lb/s
|
3.50246
PS
|
2000
ft-lb/s
|
3.6868
PS
|
2100
ft-lb/s
|
3.87114
PS
|
2200
ft-lb/s
|
4.05548
PS
|
2300
ft-lb/s
|
4.23982
PS
|
2400
ft-lb/s
|
4.42416
PS
|
2500
ft-lb/s
|
4.6085
PS
|
2600
ft-lb/s
|
4.79284
PS
|
2700
ft-lb/s
|
4.97718
PS
|
2800
ft-lb/s
|
5.16152
PS
|
2900
ft-lb/s
|
5.34586
PS
|
3000
ft-lb/s
|
5.5302
PS
|
3100
ft-lb/s
|
5.71454
PS
|
3200
ft-lb/s
|
5.89888
PS
|
3300
ft-lb/s
|
6.08322
PS
|
3400
ft-lb/s
|
6.26756
PS
|
3500
ft-lb/s
|
6.4519
PS
|
3600
ft-lb/s
|
6.63624
PS
|
3700
ft-lb/s
|
6.82058
PS
|
3800
ft-lb/s
|
7.00492
PS
|
3900
ft-lb/s
|
7.18926
PS
|
4000
ft-lb/s
|
7.3736
PS
|
4100
ft-lb/s
|
7.55794
PS
|
4200
ft-lb/s
|
7.74228
PS
|
4300
ft-lb/s
|
7.92662
PS
|
4400
ft-lb/s
|
8.11096
PS
|
4500
ft-lb/s
|
8.2953
PS
|
4600
ft-lb/s
|
8.47964
PS
|
4700
ft-lb/s
|
8.66398
PS
|
4800
ft-lb/s
|
8.84832
PS
|
4900
ft-lb/s
|
9.03266
PS
|
5000
ft-lb/s
|
9.217
PS
|
5100
ft-lb/s
|
9.40134
PS
|
5200
ft-lb/s
|
9.58568
PS
|
5300
ft-lb/s
|
9.77002
PS
|
5400
ft-lb/s
|
9.95436
PS
|
5500
ft-lb/s
|
10.1387
PS
|
5600
ft-lb/s
|
10.32304
PS
|
5700
ft-lb/s
|
10.50738
PS
|
5800
ft-lb/s
|
10.69172
PS
|
5900
ft-lb/s
|
10.87606
PS
|
6000
ft-lb/s
|
11.0604
PS
|
6100
ft-lb/s
|
11.24474
PS
|
6200
ft-lb/s
|
11.42908
PS
|
6300
ft-lb/s
|
11.61342
PS
|
6400
ft-lb/s
|
11.79776
PS
|
6500
ft-lb/s
|
11.9821
PS
|
6600
ft-lb/s
|
12.16644
PS
|
6700
ft-lb/s
|
12.35078
PS
|
6800
ft-lb/s
|
12.53512
PS
|
6900
ft-lb/s
|
12.71946
PS
|
7000
ft-lb/s
|
12.9038
PS
|
7100
ft-lb/s
|
13.08814
PS
|
7200
ft-lb/s
|
13.27248
PS
|
7300
ft-lb/s
|
13.45682
PS
|
7400
ft-lb/s
|
13.64116
PS
|
7500
ft-lb/s
|
13.8255
PS
|
7600
ft-lb/s
|
14.00984
PS
|
7700
ft-lb/s
|
14.19418
PS
|
7800
ft-lb/s
|
14.37852
PS
|
7900
ft-lb/s
|
14.56286
PS
|
8000
ft-lb/s
|
14.7472
PS
|
8100
ft-lb/s
|
14.93154
PS
|
8200
ft-lb/s
|
15.11588
PS
|
8300
ft-lb/s
|
15.30021
PS
|
8400
ft-lb/s
|
15.48455
PS
|
8500
ft-lb/s
|
15.66889
PS
|
8600
ft-lb/s
|
15.85323
PS
|
8700
ft-lb/s
|
16.03757
PS
|
8800
ft-lb/s
|
16.22191
PS
|
8900
ft-lb/s
|
16.40625
PS
|
9000
ft-lb/s
|
16.59059
PS
|
9100
ft-lb/s
|
16.77493
PS
|
9200
ft-lb/s
|
16.95927
PS
|
9300
ft-lb/s
|
17.14361
PS
|
9400
ft-lb/s
|
17.32795
PS
|
9500
ft-lb/s
|
17.51229
PS
|
9600
ft-lb/s
|
17.69663
PS
|
9700
ft-lb/s
|
17.88097
PS
|
9800
ft-lb/s
|
18.06531
PS
|
9900
ft-lb/s
|
18.24965
PS
|
10000
ft-lb/s
|
18.43399
PS
|
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