Converting 63 kilowatts gives 84.48439164 hp. One multiplication does it — 63 × 1.34102209 = 84.4843916445 horsepower — and because the factor is defined rather than measured, that answer will not drift over time.
63 kW is 84.48 mechanical horsepower and 85.66 metric PS. Put that through a 1,400 kg car at 80% drivetrain efficiency and the energy needed to reach 100 km/h — 540.1 kJ — takes about 10.7 seconds to deliver, which is a floor rather than a real figure because it ignores drag and traction limits.
The result sits 0.5156 hp short of 85 hp, so if you need a round figure to quote, 85 hp is the honest nearest one. Plenty of people do this in their head: multiply by 1.3 instead of using the exact factor 1.34102209. At 63 that shortcut gives 81.9 horsepower, off by 2.584 horsepower or about 3.06%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
The formula
63 kW- The quantity being converted
1.34102209- Exact horsepower in one kilowatt
84.48439164 hp- The converted result
How it works, step by step
- Take the kilowatt value, 63.
- Scale it by 1.34102209 — that is how many horsepower fit in a single kilowatt.
- The product is 84.4843916445 horsepower.
- Going the other way, divide rather than multiply — 84.48439164 hp ÷ 1.34102209 brings you back to 63 kW.
Worked examples
The conversion itself
Because this is a straight proportion, 63 kW × 1.34102209 = 84.4843916445 hp — no offset, no second term, nothing else to account for.
The sanity check
84.48439164 hp ÷ 1.34102209 = 63 kW. Recovering the original number is the fastest way to confirm the factor was not applied upside down.
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Frequently asked questions
What is 63 kilowatts in horsepower?
63 kilowatts is exactly 84.48439164 hp. Carried to full precision that is 84.4843916445 horsepower.
How do you convert kilowatts to horsepower?
Multiply by 1.34102209. So 63 × 1.34102209 = 84.48439164 horsepower. The factor comes from a definition rather than a measurement, so it never changes.
What is 84.48439164 horsepower back in kilowatts?
63 kilowatts. Dividing by 1.34102209 undoes the conversion exactly.
What does 63 kW actually look like?
63 kW is 84.48 mechanical horsepower and 85.66 metric PS. Put that through a 1,400 kg car at 80% drivetrain efficiency and the energy needed to reach 100 km/h — 540.1 kJ — takes about 10.7 seconds to deliver, which is a floor rather than a real figure because it ignores drag and traction limits. The reference table shows the values either side of it for comparison.
What is a kilowatt?
The rating unit for motors, EV chargers and solar arrays.
What is a horsepower?
Mechanical horsepower, defined by James Watt as 550 foot-pounds per second.
63 kW in horsepower — nearby values
| Kilowatts | Horsepower | Unrounded |
|---|---|---|
| 57 kW | 76.438259 | 76.43825911 |
| 58 kW | 77.779281 | 77.7792812 |
| 59 kW | 79.120303 | 79.12030329 |
| 60 kW | 80.461325 | 80.46132538 |
| 61 kW | 81.802347 | 81.80234747 |
| 62 kW | 83.14337 | 83.14336955 |
| 63 kW | 84.484392 | 84.48439164 |
| 64 kW | 85.825414 | 85.82541373 |
| 65 kW | 87.166436 | 87.16643582 |
| 66 kW | 88.507458 | 88.50745791 |
| 67 kW | 89.84848 | 89.84848 |
| 68 kW | 91.189502 | 91.18950209 |
| 69 kW | 92.530524 | 92.53052418 |
Exact factor: 1 kilowatt = 1.3410220896 horsepower. The row for 63 kW is the value this page is about.