The formula to convert degrees Celsius (°C) to degrees Fahrenheit (°F) is:

°F = (°C × 9/5) + 32

Substituting 30°C into the formula:

°F = (30°C × 9/5) + 32

°F = (270/5) + 32

°F = 54 + 32

°F = 86

Therefore, 30°C is equal to 86°F.