Measurement Category Hub

Power & Heat Flow Converters & Calculators

Convert power ratings across Watts, kilowatts, megawatts, mechanical horsepower, metric horsepower, and BTU per hour. Use our universal interactive power & heat flow calculator below or select one of our dedicated conversion shortcuts.

Power & Heat Flow

From: Watt

(W)

Example: 100 W

To: Kilowatt

(kW)

e.g. 0.1kW

Standard: 1 kW = 1,000 W ≈ 1.34102 hp

Enter any number above to convert Watts to Kilowatts. Click (i) for brief unit info.

Popular Power & Heat Flow Conversions

2 dedicated tools

Horsepower to Watts Converter

Convert mechanical horsepower (hp) to electrical and physical Watts (W).

Watts = hp × 745.69987

Watts to Horsepower Converter

Convert electric motor and turbine wattage to mechanical horsepower.

hp = Watts ÷ 745.69987

Supported Power & Heat Flow Units & Standards

Unit Name	Symbol	Type / System	Relative Value
WattBase SI	W	SI Standard Unit	1 W = 1 base
Kilowatt	kW	Derived Unit	1 kW = 1000 base
Megawatt	MW	Derived Unit	1 MW = 1000000 base
Horsepower (Mechanical)	hp	Derived Unit	1 hp = 745.6998715822702 base
Metric Horsepower (PS)	PS	Derived Unit	1 PS = 735.49875 base
BTU per Hour	BTU/h	Derived Unit	1 BTU/h = 0.29307107 base
Foot-Pound per Minute	ft·lbf/min	Derived Unit	1 ft·lbf/min = 0.0225969658 base

Power & Heat Flow FAQs

In the International System of Units (SI) or standard physical conventions, the base reference unit is Watt. All linear conversions within this category are mathematically derived from this base factor.