Convert between Celsius, Fahrenheit, Kelvin, and calculate dew point for greenhouse management.
Convert temperature between Celsius, Fahrenheit, and Kelvin, plus calculate dew point from temperature and relative humidity. Essential for greenhouse management, frost protection planning, storage condition monitoring, and determining spraying conditions. Free and instant.
You ventilated your greenhouse when the thermometer read 28°C, thinking that was the trigger point. But your thermometer was in direct sun — actual canopy temperature was 35°C, and humidity was 92%. By the time you noticed, botrytis had spread across 30% of your tomato crop. Temperature and humidity must be measured together, at canopy level, not eye level.
Enter temperature in Celsius and relative humidity percentage. Click calculate to see Fahrenheit and Kelvin conversions, dew point temperature, and a condensation risk assessment. For conversion only, just enter temperature — humidity is optional.
The temperature and humidity converter handles all common agricultural temperature conversions (Celsius, Fahrenheit, Kelvin) and calculates dew point temperature from temperature and relative humidity. Dew point is critical for understanding condensation risk, disease pressure, and greenhouse ventilation needs.
A: Dew point is the temperature at which air becomes saturated (100% relative humidity) and condensation begins. When air temperature drops to the dew point, water vapor condenses into liquid water (dew, fog, or on plant surfaces). In agriculture, dew point matters because: leaf wetness promotes fungal diseases, greenhouse condensation drips onto plants, and cold storage condensation damages products. If dew point is within 2-3°C of air temperature, condensation is likely.
A: Formula: °F = (°C × 9/5) + 32. Quick reference: 0°C = 32°F (freezing), 10°C = 50°F, 20°C = 68°F, 25°C = 77°F, 30°C = 86°F, 37°C = 98.6°F (body temp), 100°C = 212°F (boiling). For rough estimates: double the Celsius and add 30 (e.g., 20°C → 20×2+30 = 70°F, close to actual 68°F).
A: Cool-season crops (lettuce, spinach, peas, broccoli, wheat): 12-20°C, tolerate light frost. Warm-season crops (corn, tomatoes, peppers, cucumbers, soybeans): 20-30°C, damaged by frost. Tropical crops (bananas, mangoes, rice): 25-35°C, damaged below 10°C. Germination temperatures: cool-season 5-10°C minimum, warm-season 15-20°C minimum. Use soil temperature, not air temperature, for planting decisions.