Power Unit Converter
Convert power units: watts (W), kilowatts (kW), megawatts (MW), horsepower (HP), metric horsepower (PS), BTU per hour (BTU/h), and foot-pounds per second. Useful for engine specs, HVAC sizing, appliances, and electrical systems.
Common Conversions
1 HP = 745.7 watts = 0.7457 kW. 1 kW = 1.341 HP. 1 BTU/h = 0.293 watts. Typical central AC: 36,000 BTU/h = 10.5 kW. Mid-sized car engine: 150 HP = 112 kW.
Metric vs Mechanical HP
Mechanical HP (used in US): 745.7 W. Metric HP or PS (used in Europe/Japan): 735.5 W. They differ by ~1.4%, so a 150 HP American spec is slightly more than 150 PS European spec.
FAQ
Why do ACs use BTU/h?
BTU/h is a historical American HVAC unit for how much heat the unit can remove in an hour. 12,000 BTU/h is called \"1 ton\" of AC (the energy to freeze 1 ton of water in 24 hours).
Try Also
More: Energy Converter, BTU Calculator.
Why Use This Power Converter?
The Power Converter runs entirely in your browser, which means three things matter for you. First, it's instant — there's no server round-trip, no upload, no waiting on someone else's queue. Second, it's private — nothing you enter ever leaves your device, which makes it safe for sensitive numbers, draft copy, or files you don't want sitting on a third party's servers. Third, it's free forever — no signup, no email capture, no "basic vs. pro" upsell. Open the page, get the answer, close the tab.
Common Use Cases
- Everyday lookups when you need a fast, reliable answer without installing an app
- Cross-checking results from another tool or spreadsheet when accuracy matters
- Quick reference during work calls, school assignments, or planning sessions
- Sharing the link with a colleague or friend who needs the same answer
- Bookmarking for repeat tasks that come up regularly throughout the week
Privacy & How Your Data Is Handled
Every calculation and every transformation in the Power Converter runs locally in your browser using standard JavaScript. We don't upload your input to any server, we don't log it, and we don't pass it to a third-party API. The tool works the same whether you're on a fast home connection or completely offline once the page has loaded. If you want to verify this for yourself, open your browser's network tab and run the tool — you won't see any outbound request carrying your data.
Frequently Asked Questions
Is the Power Converter really free?
Yes. Every tool on ClickSolveTools is free with no signup, no email capture, no paywalled "pro" features, and no usage limits. We don't sell your data and we don't run ads inside the tool itself.
Does the Power Converter work on my phone?
Yes. The Power Converter is mobile-first and works in any modern browser on iOS, Android, Windows, Mac, Linux, and ChromeOS. Inputs are touch-friendly, the layout is fully responsive, and nothing requires a desktop-only feature to function.
Do I need to sign up or install anything?
No. There's no account, no extension, no app to download. Open the page in any browser, use the tool, and close the tab when you're done. Your usage isn't tied to a profile.
Is my data safe?
Everything runs locally in your browser. We don't transmit your inputs, calculations, or files to any server. You can use the tool with full confidence even for sensitive information.