Best Compost Thermometer – 5 Products Reviewed

Best Compost Thermometer - 5 Products Reviewed

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Are you new to composting? Are you facing difficulty to find out the best compost thermometer? Do not worry. This article is ideal for you. It features detailed descriptions of the 5 best thermometers that are exclusively designed and manufactured for composting. Also, here you will get to know about the different essential features that you need to look for when purchasing a compost thermometer. So, read along and get to know all about composting thermometers.

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What Is Composting?

Composting is a highly effective and innovative way to make optimum use of your household and garden waste. It also creates an organic fertilizer that acts as a sort of nutrient for both the soil and the plants.

Rich compost is important and crucial for your garden to develop and flourish. To have a good quality compost, you need to constantly track the temperature of the compost. This will help you to have a fair idea about the correct timings of planting crops on the compost.

A thermometer for composting helps you to monitor the soil temperature. If you get the soil temperature wrong or inaccurate, then there are chances of your crops getting destroyed. The best compost thermometer will let you know the exact time when you need to turn the compost.

Getting the right temperature is very crucial before your compost is turned on. Heat stimulates the different microbes in the compost. If you turn the heap at the correct time, it will boost the production rate and yield a good compost.

Reotemp Compost Thermometer Heavy Duty

[amazon box=”B002Q0ZKX4″ title=”Reotemp Heavy Duty Compost Thermometer”]

This is one of the best compost thermometers from the house of Reotemp. The product is very well designed. The stainless steel body will not rust with time. It features a strong, 36 inches stem which you can use to reach the depths of your compost heaps. It will give you the correct temperature readings.

The diameter of the stem measures 5/16 inches. You can easily insert the thermometer into dense and large compost piles. There is no risk of the stem breaking or bending.

The large display makes it very easy to read the temperatures. The dual temperature scales are wide enough with temperatures ranging from 0 degrees to 200 degrees Fahrenheit.

Since the dial is hermetically sealed, it prevents moisture from entering the device. Therefore, there are no chances of fogging up as well. This product is great for industrial composting sites. This thermometer is unique and highly recommended.


  • Stainless steel construction.
  • Heavy-duty 36 inches stem.
  • Transparent and clear display.
  • Hermetically sealed glass dial.
  • Rugged probe.
  • Well designed
  • Features dual temperature scale
  • Equipped with a long stem
  • Can be calibrated
  • A little bit expensive
  • Does not have color-coded zones

Cate’s Garden Compost Thermometer

[amazon box=”B00KXAGST4″ title=”Cate’s Garden Stainless Steel Compost Thermometer]

This thermometer is something that every composter would love to have in his composting tool kit. The length of the probe measures 20 inches. The diameter is 3/16 inch. This makes the product less prone to breakage or bending.

The hermetically sealed dial prevents water from seeping into this tool. The dial has a temperature range that lies between 40 degrees to 180 degrees Fahrenheit. The dual temperature display also allows you to change the temperature to the Celsius scale.

The dial features color-coded zones. This will help you to determine the zone that your compost is in so that you can take action accordingly. With this thermometer, you can read the temperatures of your compost in just 30 seconds.

The manufacturer provides a 100% money-back guarantee in case you are not satisfied with the performance of the product. It also comes with a warranty of 5 years.


  • Made of superior quality stainless steel.
  • Color-coded temperature ranges.
  • Good quality and lightweight lens.
  • Long, durable stem.
  • Water-resistant.
  • Dual temperature scale display
  • Sturdy and long-lasting
  • Reliable
  • Comes with a 5-year warranty
  • Can get fogged when used for long
  • Stem not suitable for dense piles

Mantis Compost Thermometer 201101

[amazon box=”B00008Z9ZH” title=”Mantis 201101 Compost Thermometer”]

Being one of the best thermometers for composting, this is an efficient thermometer. The design of the item is simple. The probe is 20 inches in length. This makes the product suitable to be inserted into dense and deep compost piles. The long probe is strong enough to bear the compost force without suffering from any damage.

The temperature range measured by this thermometer falls between 40 degrees to 240 degrees Fahrenheit. Since the dial features a dual-scale temperature display, you can also get the readings on the Celsius scale if you want.

This thermometer is perfect for you if you want to measure the temperatures of dense and deep compost piles. The product is also highly durable and rust-resistant. This ensures a long lifespan of the item. If you want to get accurate temperatures, then you can choose this product without a second thought.


  • Made of good quality steel.
  • Sturdy construction.
  • Measures 20 inches long.
  • Temperature range up to 220 degrees.
  • Full glass, transparent dial.
  • Durable and reliable
  • Rust-resistant
  • Offers precise and accurate results
  • Lightweight and portable
  • The dial tends to fog up
  • The stem might bend due to regular usage

Better18 Stainless Steel Compost Thermometer

[amazon box=”B08D79NNN5″ title=”Better18 Stainless Steel Compost Thermometer”]

Do you want healthy and good quality crops? Then, you need must have this thermometer. With this product, you can easily measure the compost temperatures. The best part of this thermometer is that it lets you measure soil temperatures too.

The dial of the thermometer features fully transparent glass. This makes it very easy for you to look read the results and interpret them. This product can measure temperature ranges that lie between 40 degrees to 180 degrees Fahrenheit. The color-coded temperature ranges also prove to be very useful for composters.

The dial is made waterproof so that it can successfully prevent water or moisture from seeping into it. The length of the probe is 50cm. You can use this thermometer for both indoor and outdoor purposes. All these features make this item one of the best thermometers for composting.


  • Made of high-quality stainless steel.
  • Hermetically sealed dial.
  • Long probe.
  • Color-coded temperatures.
  • Transparent, full-glass display.
  • Measures soil and compost temperatures
  • Easy to clean
  • Safe and environmentally friendly
  • Suitable for outdoor and indoor gardening
  • The dial can get foggy with regular usage
  • The probe tends to bend if not handled with care

Firgus Stainless Steel Compost Thermometer

[amazon box=”B0812R23QQ” title=”Firgus Stainless Steel Compost Thermometer”]

This is the best compost thermometer that is notable for providing the most accurate compost temperature readings. It allows you to determine the decomposition level of your compost pile.

The full glass, the transparent dial is clear and easy to read. It measures temperatures that fall between 20 degrees to 200 degrees Fahrenheit. The dial features both Fahrenheit and Celsius scales. The waterproof dial prevents water or moisture from getting into the tool. There are three separate color-coded temperature zones.

The product comes with specifications instructions and tips for composting. The diameter of the dial measures 2 inches while the stem is 20 inches long and its diameter measures 0.2 inches. The product comes in a protective sheath that keeps the thermometer safe from all sorts of damages.


  • Rugged stainless steel construction.
  • Features both Fahrenheit and Celsius scales.
  • Waterproof and hermetically sealed.
  • Separate highlighted three temperature zones.
  • Long stem for better measurement.
  • Can be used in all weather conditions
  • Includes a sheath protector
  • Comes with tips and instructions on composting
  • Clear and easy to read dial
  • The dial can be foggy with time
  • The indicator does not work properly at times
Compost Thermometer

Choosing A Compost Thermometer – Things To Look For

Measuring units

While you are looking for the best thermometer for composting, make sure to observe the measuring unit of the product. Buy a thermometer only when you are well-acquainted with the measuring units that it requires to measure the compost temperatures.

Temperature range

Always go for a compost thermometer having a wide temperature range. This will help you to find out the temperature of your compost correctly. Thermometers with narrow temperature scales might display incorrect readings.

Probe size

You need a thermometer with a long probe if you are composting in a bin or a tumbler. Probes measuring 20 inches are suitable mostly for backyard compost piles.

Construction quality

This is an important feature that you should pay attention to while purchasing the best thermometer for composting purposes. Try to find thermometers that are made up of stainless steel. It is a strong material that is ideal for withstanding pressure.

Easy to use

Always choose a thermometer in which you can easily read the displayed temperatures. A thermometer with a large dial will let you interpret results without any hassle. Also, look for thermometers that come with color-coded zones. These indicate what a particular temperature range stands for.


The dial of a good and functional compost thermometer should be waterproof. This prevents the dial from becoming foggy. Also, good quality thermometers are hermetically sealed. This stops the moisture from seeping into the dial and damaging it.

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