In 1 terawatts there are 1,000,000 megawatts. Meanwhile in 1 megawatts there are 0.00000100000 terawatts. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Megawatts to Terawatts calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert terawatts (TW) to megawatts (MW), use the metric power scale:
Quick examples
Tip: Moving from tera- to mega- is a jump of six powers of ten, so you multiply by 1,000,000.
Terawatts to megawatts is a unit conversion for power. It changes a value in terawatts (TW) into the same power amount in megawatts (MW). Both units measure the rate of energy use or output.
1 terawatt equals 1,000,000 megawatts.
1 TW = 1,000,000 MW
Multiply terawatts by 1,000,000.
MW = TW × 1,000,000
Divide megawatts by 1,000,000.
TW = MW ÷ 1,000,000
The metric prefixes explain it.
So, 10¹² ÷ 10⁶ = 10⁶, which is 1,000,000.
Terawatts often describe very large totals, like a country’s power demand or global power use at a moment in time. Megawatts often describe power plants, wind farms, and large factory loads.
Use the formula MW = TW × 1,000,000.
0.5 × 1,000,000 = 500,000
0.5 TW = 500,000 MW
0.001 × 1,000,000 = 1,000
0.001 TW = 1,000 MW
Yes. Both units measure power, which fits electricity generation (output) and electricity demand (use). The unit stays the same whether you talk about a plant producing power or a grid using power.
Terawatt (TW) is a unit of power, not energy. Power is a rate. Energy depends on time.
You can’t convert TW to MWh without time. First convert TW to MW, then multiply by hours.
Example: 2 TW for 3 hours
2 TW = 2,000,000 MW
Energy = 2,000,000 MW × 3 h = 6,000,000 MWh
MW measures power at a moment. MWh measures energy over time.
It depends on your use. For quick estimates, rounding is fine. For reporting or billing, keep enough decimal places in terawatts to avoid big changes after multiplying by 1,000,000.
Use uppercase letters. Case matters in unit symbols.
The Calculate Box tool to convert terawatts to megawatts uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a terawatts value in the box and have it instantly converted to megawatts.