10 Best Grain Moisture Meters 2026 in the United States

The Draminski Hay & Straw High-Moisture Meter is designed to measure moisture levels in hay and straw, with a range from 10% to 80%. This covers most typical moisture levels you'd expect when checking quality for storage or processing. It includes a temperature display in Fahrenheit, which is helpful since moisture readings can be affected by temperature. The large LCD with clear numbers makes it easy to read results, and the 22-inch probe allows you to test deeper into bales for more accurate sampling.

The meter operates on a 9-volt battery and weighs about 1.36 kg (around 3 pounds), making it portable enough for field use but not ultra-light. It’s not designed for extremely cold environments (minimum 32°F), so it should be used with caution if working outdoors in freezing temperatures. The device’s durability looks solid with a tabletop mounting option, but it’s primarily intended for hay and silage rather than grains directly. If you need a meter for general grain moisture, this model is more specialized toward hay and straw, which might limit its usefulness in some grain-focused settings.

This meter is a good choice for those who regularly measure moisture in hay or straw and want a clear temperature readout alongside moisture readings. It is user-friendly and offers practical features like minimum, maximum, and average functions. For moisture measurements focused purely on grains or use in very cold conditions, other options may be better suited.

The Agratronix MT-Pro Portable Moisture Tester is a versatile tool designed for accurately measuring moisture in various grains. One of its standout features is the direct readout for 40 different grain scales, making it highly useful for diverse grain testing needs. It can test grains with moisture content up to 40%, which is quite high, and offers a readout accuracy of ±0.5%, ensuring reliable results.

The illuminated multilingual LCD display is another significant advantage, facilitating easier use across different languages and lighting conditions. The inclusion of a protective carrying case with a shoulder strap enhances its portability, making it convenient for field use. Additionally, the device supports both single-point and precision multi-point calibration, allowing users to match local elevator standards, further boosting its accuracy and usability.

The product dimensions (12 x 10 x 5 inches) and weight (1.94 pounds) are manageable but might not be the most compact or lightweight option available, potentially making it a bit cumbersome for some users. Despite being battery-powered and coming with included batteries, the reliance on a 9-volt battery might be considered a drawback for those who prefer rechargeable options. The Agratronix MT-Pro Portable Moisture Tester is a reliable and user-friendly device with excellent features for grain moisture testing, particularly suitable for users needing accurate and multilingual capabilities. Its size and battery type may not be ideal for everyone.

The Grains Moisture Meter AMT65C is designed for farmers and grain sellers, offering the ability to test moisture levels in 25 different types of grains like wheat, corn, and coffee beans. It provides accurate moisture readings quickly, which is a key advantage for those who need immediate results to make swift decisions. The ability to display both moisture and temperature simultaneously is another useful feature, helping users monitor environmental conditions that can affect grain storage and quality. An external temperature sensor can be added, enhancing its versatility.

Additionally, the backlit display ensures readability in various lighting conditions, making it convenient for use in different environments, whether in a dimly lit barn or out in the field. The unit is portable, though it may be a bit bulky for some users due to its 0.88-kilogram weight. Its tabletop mounting might not suit everyone, especially those who need to carry the device around frequently.

In terms of durability, the product appears to be robust enough for regular use. However, it's essential to handle it with care to avoid any damages that could affect its accuracy. The device is powered by alkaline batteries, which are readily available, ensuring that users can keep it operational without difficulty. For those seeking a reliable and relatively easy-to-use moisture meter for a variety of grains, the AMT65C serves as a good option despite some minor portability concerns.