Growing Degree Days Calculator Online

Last updated on by Editorial Staff

Growing Degree Days Calculator

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Quick Guide to Using the Growing Degree Days Calculator

  • Select Temperature: Choose between “Degree Celsius” and “Degree Fahrenheit.”
  • Choose Crops: Pick the specific crop from the dropdown list.
  • Base and Cutoff Temperatures: The calculator provides the base and cutoff temperature for the given crops in the options. If you want to calculate for other crops that are not there in the options, you need to Enter the base and cutoff temperatures for accurate calculations.
  • Recorded Temperatures: Input the recorded low and high temperatures.
  • Calculate: Click the “Calculate” button to obtain the mean temperature and growing degree days.
  • Reset: Use the “Reset” button to clear all inputs and start fresh.


Growing Degree Days = Mean – Base Temperature

Where, mean = (Recorded Heigh temperature + Recorded low temperature)/2

Some conditions

  • If Recorded low temperature < Base Temperature, then mean = (Recorded Heigh temperature + Base temperature)/2
  • If Recorded Heigh temperature > Cutoff temperature, then mean = (Cutoff temperature + Recorded low temperature)/2

What is Growing Degree Days (GDD)?

Growing Degree Days (GDD) is a measure used in agriculture to quantify the accumulated heat that crops receive over time. It helps estimate the growth and development of crops based on temperature conditions.

Who Can Use This Calculator?

Farmers, agronomists, researchers, and anyone involved in agriculture or crop management can benefit from this calculator to monitor and plan crop growth.

Which Industries Can Use This Calculator?

Industries related to agriculture, farming, and crop production can use this calculator. It’s particularly useful for sectors like agribusiness, food production, and environmental science.

Benefits of Using This Calculator

  • Precision: Provides accurate calculations based on temperature inputs.
  • Efficiency: Streamlines the process of estimating growing degree days for crop planning.
  • Optimization: Helps in optimizing planting schedules and resource allocation.
  • Decision Support: Assists in making informed decisions for crop management.


Can I use this calculator for any crop?

Yes, the calculator is designed to accommodate various crops. Simply select the specific crop from the dropdown menu. If the desired crop is not there in the dropdown button, choose others and input the base and cutoff temperature manually.

How often should I use this calculator?

It can be used whenever temperature data is available or whenever decisions related to crop growth and development are being made.

What is Base Temperature?

The base temperature is the minimum temperature required for a particular crop to start growing. Below this temperature, the crop remains dormant, and no growth occurs. Once the temperature surpasses the base temperature, the crop begins accumulating Growing Degree Days.

What is the Cutoff Temperature?

The cutoff temperature represents the upper limit beyond which accumulated heat is considered excessive for the crop’s growth. If the temperature exceeds the cutoff temperature, the excess heat doesn’t contribute to the GDD calculation. This temperature helps in defining the upper threshold for temperature accumulation in the growing process.


The Growing Degree Days Calculator is a valuable tool for individuals involved in agriculture, helping optimize crop management and decision-making processes.

Its user-friendly interface and accurate calculations make it a reliable resource for planning and monitoring crop growth based on temperature conditions. Whether you are a farmer, agronomist, or researcher, this calculator can enhance your approach to crop management.