BHP to kW Calculator
Enter brake horsepower (bhp) and instantly convert to kilowatts (kW).
Conversion factor used: 1 bhp = 0.745699872 kW
How to convert BHP to kW
If you need to convert engine power from brake horsepower to kilowatts, use this simple formula:
kW = bhp × 0.745699872
This is the standard conversion for mechanical horsepower (commonly referenced as bhp in automotive contexts) to SI power units. Our calculator applies this exact factor and rounds to your preferred decimal precision.
What do bhp and kW mean?
Brake horsepower (bhp)
BHP is a measure of engine power before losses from drivetrain components. It is often used in vehicle specifications, performance tuning, and dyno discussions.
Kilowatts (kW)
Kilowatt is the metric SI unit of power. Many regions list car engine output in kW, making conversion useful for comparing specs across countries, technical documents, and registration data.
Quick conversion examples
- 100 bhp = 74.570 kW
- 150 bhp = 111.855 kW
- 200 bhp = 149.140 kW
- 300 bhp = 223.710 kW
- 500 bhp = 372.850 kW
BHP to kW reference table
| BHP | kW |
|---|---|
| 50 | 37.285 |
| 75 | 55.927 |
| 90 | 67.113 |
| 120 | 89.484 |
| 180 | 134.226 |
| 250 | 186.425 |
| 350 | 260.995 |
| 450 | 335.565 |
Why accurate power conversion matters
A rough estimate can be enough for casual conversation, but exact conversion helps in practical situations:
- Comparing international vehicle listings (hp/bhp vs kW).
- Preparing technical reports and engineering documentation.
- Matching generator, motor, or pump specifications.
- Reviewing tuning data and power-to-weight calculations.
- Understanding regulatory and registration records in metric markets.
Common mistakes to avoid
- Mixing different horsepower standards: metric horsepower (PS) is not identical to bhp.
- Over-rounding too early: keep full precision until final output.
- Confusing wheel horsepower with bhp: wheel hp is typically lower due to drivetrain losses.
- Typing commas incorrectly: enter numbers clearly (for example, 1500 or 1,500).
Frequently asked questions
Is bhp the same as hp?
In many automotive contexts they are treated similarly, but terminology can vary by source. For this calculator, we use the standard mechanical horsepower conversion factor to kW.
Can I convert kW back to bhp?
Yes. Reverse formula: bhp = kW ÷ 0.745699872. That means 100 kW is about 134.102 bhp.
What if I need rough mental math?
A quick estimate is to multiply bhp by 0.746. It is close enough for fast comparisons, while this calculator gives precise results.
Final takeaway
Use this bhp to kW converter whenever you need fast, accurate engine power conversion. Whether you are comparing cars, preparing engineering notes, or checking performance numbers, a precise calculator helps you avoid confusion and make better decisions.