Power Converter

Enter a power value, choose its unit and the unit you want.

Updated October 27, 2026

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<iframe src="/embed/en/unit-converters/power-converter/" width="480" height="640" title="Power Converter" loading="lazy" style="border:0;max-width:100%"></iframe>
<script>window.addEventListener('message',function(event){if(event.origin!==''||!event.data||event.data.type!=='calc-embed-height')return;var f=document.getElementsByTagName('iframe');for(var i=0;i<f.length;i++){if(f[i].contentWindow===event.source){f[i].style.height=event.data.height+'px';}}});</script>

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Formula

result = value × (watts in the from unit) ÷ (watts in the to unit)

Every unit is stored as a fixed multiple of the base unit (W), so any pair converts in one step.

Worked example

1 kW to hp: 1 kW = 1000 W and 1 hp = 745.69987158 W, so 1000 ÷ 745.69987158 = 1.341022 hp.

Quick reference

1 hp = 745.700 W, 1 PS = 735.499 W, 1 kW = 1.341 hp, 1 kW = 3412.14 BTU/h.

Frequently asked questions

How many watts is 1 horsepower?

One mechanical horsepower is 745.7 W. Metric horsepower (PS) is 735.49875 W, defined as 75 kgf·m/s.

How many hp is 1 kW?

1 kW is 1.341022 mechanical hp. A 100 kW engine is therefore about 134.1 hp.

How do I convert kW to BTU/h?

Multiply kW by 3,412.14. A 5 kW heater gives 17,060.7 BTU/h.

Is power the same as energy?

No. Power is the rate of using energy: 1 W is 1 joule per second. A 1 kW device running for one hour uses 1 kWh.

How we calculate

Power Converter

Formula

Worked example

Quick reference

Frequently asked questions

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