Watts to kW Generator Converter (Instant Tool)

Understanding generator size can be confusing. Some models are labeled in watts, others in kilowatts (kW), and sometimes both appear on the same specification sheet. If you’re trying to figure out whether a 6,875-watt generator is the same as a 6.8kW generator, you’re in the right place.

This tool instantly converts watts to kilowatts and helps you understand what that number actually means for real-world power usage. Whether you’re comparing models or planning backup power for your home, knowing the kW rating helps you choose the right generator class.

For example, 6,875 watts equals 6.875 kW — which typically falls into the large portable generator category.

Use the converter below to check your generator size.

What Does kW Mean on a Generator?

kW stands for kilowatt. One kilowatt equals 1,000 watts.

Manufacturers sometimes advertise generators in kilowatts because it sounds simpler — especially for larger models. Instead of writing 7,000 watts, they’ll list it as 7kW.

Both numbers represent the same thing. The key is understanding how much power that rating can handle in real-world situations.

Generator Size Classes Explained

Small Portable Generators (Under 3kW)

These are typically used for camping, tailgating, or very basic backup power. They can run lights, small electronics, and sometimes a refrigerator.

Medium Generators (3kW–6kW)

Good for essential home backup. These models can usually power:

• Refrigerator
• Sump pump
• Microwave
• Lights and outlets

Large Portable Generators (6kW–9kW)

This is where a 6,875-watt generator falls. These units can typically power multiple appliances at once and handle higher startup loads.

High-Capacity Generators (9kW and Above)

Designed for heavy loads and more complete home backup systems.

Running Watts vs Starting Watts

When comparing generator sizes, remember that most models list two numbers:

Running Watts
This is the continuous power the generator can supply.

Starting (Surge) Watts
This is the temporary boost used to start motors, compressors, or pumps.

Always compare running watts when determining generator class.

Choosing the Right Generator Size

If you’re unsure what size you need, consider:

• The total running wattage of your appliances
• The highest startup wattage device
• Whether you’re powering essentials or full-home backup
• Fuel type and runtime requirements

If you’re ready to compare models, browse our full selection of portable generators by size category.

👉 View Portable Generators by Size

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FAQ Section

Frequently Asked Questions

How many kW is 6,875 watts?

6,875 watts equals 6.875 kilowatts (kW). Divide watts by 1,000 to convert.

Is a 6.8kW generator the same as 6,800 watts?

Yes. 6.8kW equals 6,800 watts.

What size generator do I need for a house?

Most homes need between 5kW and 8kW for essential circuits. Larger homes may require 10kW or more depending on appliances.

Why do generators use both watts and kW?

Kilowatts are simply a larger measurement unit. Using kW makes larger numbers easier to read and compare.

🔢 Generator Watt to kW Conversion Table

Common Generator Conversions (Quick Reference)

Explore Generators by Power Output

If you’re narrowing down the right size, these detailed guides break down what each power range can realistically handle:

• 3,000–4,000 Watt Generators – Ideal for camping and small backup loads
• 5,000–6,000 Watt Generators – Best for essential home circuits
• 7,000–8,000 Watt Generators – Strong mid-size whole-home backup
• 9,000–10,000 Watt Generators – High-capacity portable solutions