To convert 30 degrees Celsius to Fahrenheit, you can use the following formula:

\(°F = (°C × 9/5) + 32\)

Plugging in 30 degrees Celsius, we get:

\(°F = (30 × 9/5) + 32\)

\(°F = (540/5) + 32\)

\(°F = 108 + 32\)

\(°F = 140\)

Therefore, 30 degrees Celsius is equal to 140 degrees Fahrenheit.