Brooding Temperature Schedule Calculator
Calculate the target brooding temperature for chicks based on age, starting temperature, and weekly reduction rate.
About this calculator
Newly hatched chicks can't yet regulate their own body temperature well, so brooder heat has to do that job for them -- too cold and they pile up and chill, too hot and they pant, spread out to the edges, and stop eating normally. This calculator applies the standard step-down brooding schedule: start at a warm placement temperature (95°F is the widely used starting point for most breeds at day 0) and reduce it gradually, typically around 5°F per week, until it reaches house-ambient temperature and supplemental heat is no longer needed. Enter the chick's age in days, the starting temperature you're using, and your weekly reduction rate, and the calculator works out the target air temperature at bird level for that exact day, along with a +/-2°F acceptable range for your thermostat and a floor-surface target (typically run a few degrees below air temperature).
It also reports a target relative humidity that tightens as chicks age, a plain-language brooder-type recommendation (full radiant heat, reduced output, transitioning, or off), and an estimate of how many more days until brooders can come off entirely. None of this replaces watching chick behavior directly -- chicks spread evenly around the heat source are comfortable, chicks piled directly under it are cold, and chicks pushed to the brooder's edges are too warm -- but it gives you a documented schedule to start from and adjust against.
Inputs
Results
Target Temperature
90 °F
How to Use This Calculator
- Enter the chick age in days since hatch to get the target temperature for that specific day.
- Set the starting temperature in °F — 95°F at the brooder level is standard for day-old chicks.
- Adjust the reduction rate per week (°F) — 5°F per week is typical, tapering toward house ambient temperature.
- Review Target Temperature, Acceptable Low, and Acceptable High to set your brooder thermostats.
- Check Brooder Recommendation to see whether to run the brooder at full output, reduce it, begin transitioning, or turn it off.
- Use Days Until Brooders Off to plan your heating schedule through the grow-out period.
How the result changes with Starting Temperature
| Starting Temperature | Target Temperature |
|---|---|
| 87 | 82 °F |
| 90 | 85 °F |
| 95 | 90 °F |
| 99 | 94 °F |
What each input means
- Chick Age
- Age of chicks in days since hatch.
- Starting Temperature
- Brooder temperature at placement (day 0). Standard is 95°F for most breeds.
- Reduction per Week
- Temperature reduction per week. Standard is 5°F per week until reaching 70°F.
What each result means
- Target Temperature
- Recommended air temperature at bird level.
How this is calculated
Worked example, using the default values
- Identify Input ParametersChick Age = 7, Starting Temperature = 95, Reduction per Week = 5 = 3 input(s) provided
- Calculate Target Temperature90 = 90
- Calculate Acceptable LowAcceptable Low88 = 88
- Calculate Acceptable HighAcceptable High92 = 92
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why does the target brooding temperature drop as chicks get older?
Chicks are essentially unable to regulate their own body temperature for the first couple of weeks and rely almost entirely on ambient heat, but that ability develops fast as they feather out. The standard step-down schedule -- roughly 5°F less per week starting from 95°F -- tracks that developing thermoregulation, so by the time a bird is feathered it needs little or no supplemental heat.
What happens if I set a faster weekly reduction rate than the standard 5°F?
A faster reduction rate brings the target temperature down toward house-ambient conditions sooner, which also shortens the estimated number of days until brooders can be turned off entirely. Reducing heat too aggressively for the chicks' actual feather coverage risks chilling, so the rate should be adjusted based on observed chick behavior, not schedule alone.
How is the floor temperature target different from the air temperature target?
The floor temperature target is set a few degrees below the air (bird-level) target temperature, since chicks spend most of their time in direct contact with the litter or floor surface rather than suspended in the air around them. The dominant real-world risk is a floor that runs colder than this target, not warmer -- a thermometer reading the correct air temperature at chick height can still mask litter that's chilling chicks from below, which is why standard practice is to pre-heat the litter well before placement (typically 24-48 hours) and verify it directly with a surface thermometer rather than relying on the air reading alone.
Does raising the starting temperature always raise the target temperature at every age?
Yes, for any given age and reduction rate, a higher starting temperature produces a higher target temperature -- the schedule is built by subtracting the reduction amount from wherever you started, so the whole curve shifts up or down together with the starting point until it reaches the 65°F floor this calculator won't drop below.
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