how fast is 6hp outboard motor in km

A 6hp outboard motor usually runs about 16–25 km/h on a small, light boat, but real speed can be lower or higher depending on boat weight, load, hull shape, and water conditions.

Typical speed

• Light inflatable or dinghy: about 16–25 km/h

• Some setups in calm water: around 10–12 km/h

• Faster solo runs on very light boats: can reach roughly 22–25 km/h or a bit more

What changes the speed

• Boat size and weight.
• Number of people onboard.
• Wind, waves, and current.
• Propeller choice and engine tuning.

Simple rule of thumb

If you just want a quick estimate, think around 20 km/h for a typical small boat with a 6hp motor.

TL;DR: A 6hp outboard motor is usually in the 16–25 km/h range, with about 20 km/h being a common real-world estimate.