Chilling Hours
Calculate Chilling Hours instantly with the exact formula and a worked example.
Chilling Hours
Average daily minimum°C
Average daily maximum°C
Days in the dormancy perioddays
Variety chill requirementh
Chill hours for the period
1,296h
Per day
14.4h
Share of variety requirement met
162%
More about: Chilling Hours
What it calculates
The “Chilling Hours” calculator computes Chill hours for the period in h from 4 parameters: average daily minimum (°C), average daily maximum (°C), days in the dormancy period (days), variety chill requirement (h).
A handy everyday calculator for daily tasks.
Example calculation
With parameters Average daily minimum = -2 °C, Average daily maximum = 10 °C, Days in the dormancy period = 90 days, Variety chill requirement = 800 h the result is 1,296 h (Estimate from average temperatures; hourly weather-station data is more accurate).
How to use
- Enter average daily minimum, average daily maximum, days in the dormancy period and variety chill requirement — each field above is adjustable with a slider.
- Chill hours for the period (h) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Chilling Hours calculated?
The Chilling Hours calculator computes Chill hours for the period (in h) from average daily minimum, average daily maximum, days in the dormancy period, variety chill requirement. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Chilling Hours calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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