Best Calibration Weights of 2025

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Calibration weights are essential tools used in a variety of industries, including laboratory research, quality control, and manufacturing. These weights are used to calibrate measuring instruments such as scales, balances, and weighing machines to ensure accurate measurements. Calibration weights come in various shapes, sizes, and materials, including stainless steel, brass, and cast iron. They also have different accuracy classes, ranging from E1, which is the most accurate, to M3, which is the least accurate. Calibration weights are a necessary investment for any business that requires precise measurements and quality control.
At a Glance: Our Top Picks
Top 10 Calibration Weights
Fuzion Calibration Weights Set
The Fuzion Calibration Weights Set includes 9 pieces of stainless steel weights (ranging from 1g to 100g) with a durable and precise design, perfect for calibrating digital scales. It also comes with a stainless steel tweezer to easily place the weights and a portable storage box made of durable ABS material. Keep your scale always calibrated and ready to provide accurate measurements.
Omama 500g Calibration Weight
The Omama Calibration Weight is a 500-gram tool designed to enhance the accuracy of your electronic scales. Made with high-quality chrome plating, it boasts a shiny and elegant appearance, making it a durable addition to your calibration toolkit. This weight is essential for calibrating various scales, including digital jewelry scales and precision balances, ensuring you get precise measurements every time. With a permissible error of just +/-0.003g, you can trust that your readings will be reliable and accurate. Its user-friendly design allows for easy handling, making calibration a breeze.
HFS M2 Scale Balance Calibration Weight Set
The HFS M2 Scale Balance Calibration Weight Set is made of 45 steel with a chrome plated surface, making it durable and rust-resistant. The set includes eight pieces of weights ranging from 10g to 500g and comes in exquisite packaging with a special weight box and plastic tweezers to prevent damage during transportation. The M2 class ensures high performance and accuracy, making it a suitable choice for calibration needs.
Bekith Calibration Weights Kit
The Bekith Calibration Weights Kit includes multiple precision calibration weights, a plastic storage case, and a calibration weight tweezer. Made of solid feeling coated metal, these stainless steel weights are anti-oxidation and ensure the quality of the weight will not be damaged and can be reused multiple times. The precision calibration gram function is ideal for calibrating weights, electronic balances, and scales for general laboratory, commercial, and educational purposes. Suitable for digital kitchen scales, jewelry scales, diamond scales, and precision balance tests.
TOODOO Calibration Weight Set for Digital Scale
This calibration weight set includes 5 pieces of calibration weight (1g, 2g, 5g, 10g, 20g) and 1 piece of tweezer. The steel construction provides stability and resistance to corrosion, along with a chrome plated finish. The set is suitable for digital pocket scales, jewelry carat scales, diamond scales, and precision balance tests. The calibration gram allows for calibrating weights or electronic balances and scales. Additionally, the included anti-static tweezer makes it more convenient for picking calibration weight.
MAXUS 100g Calibration Weight
The MAXUS Calibration Weight is designed to provide high precision in your measurements. With its adherence to Class M1 standards, you can rely on it for accurate and consistent results. Weighing exactly 100 grams, it is perfect for calibrating various scales, ensuring they function correctly. Constructed from durable stainless steel, it offers longevity and resistance to wear. Its compact design makes it easy to handle and store, while the smooth surface allows for quick and simple cleaning, making it convenient for regular use.
Bekith 17-Piece Calibration Weight Set
The Bekith Calibration Weight Set includes a comprehensive range of weights from 100g down to 500mg, making it ideal for various applications. You can use these precision weights for digital jewelry scales or in laboratory settings, ensuring accurate measurements every time. The weights are made of durable chrome steel, giving them an elegant and shiny appearance. With a permissible error of only +/-0.003g, you can trust that your measurements will be precise. Plus, the set comes in a padded carrying case, making it easy to transport and store safely.
QP 1000g Calibration Weight Set
The QP Calibration Weights set includes eight different weights, offering a total of 1000g for precise calibration of various scales. Each weight is made of high-quality stainless steel, ensuring durability and accuracy in your measurements. The included plastic tweezers allow you to handle the weights easily, making switching between them convenient. With triple protection packaging, you can trust that your weights will arrive safely and undamaged, ready for use in labs, industries, or even at home.
UCEC Calibration Weight Kit
The UCEC Calibration Weight Kit is a set of 17 pieces of different weights, made of high-quality and solid feeling coated metal with chrome-plated surface, and comes with a tweezers for convenience. It has high accuracy with a permissible error of -0.003 to +0.003g, making it suitable for calibrating digital pocket scales, jewelry carat scales, diamond scales, and precision balance tests. This kit is ideal for general laboratory, commercial, experimental, educational, and daily life use.
I-MART Calibration Scale Weight Kit Set
The I-MART Calibration Scale Weight Kit Set includes five steel chrome weights with 1g, 2g, 5g, 10g, and 20g measurement options. This kit is an excellent choice for calibrating digital kitchen scales, jewelry scales, diamond scales, and precision balance tests. The weights are easy to handle and come in a convenient package.
Frequently Asked Questions (FAQs)
1. What can I use as a calibration weight?
If you don't have calibration weights, you can use a candy bar or coins as an alternative. Pennies made after 1983 weigh exactly 2.5 grams, which can be used for calibration purposes.
2. What size calibration weight do I need?
The size of the calibration weight needed depends on the scale's capacity. Generally, weights equal to at least 12.5% of the scale's capacity are recommended. However, some lower capacity scales may require weights equal to the full capacity.
3. What is the most accurate calibration weight?
The most accurate calibration weights are Class 0, Class 1, E1, and E2. These weights are highly sensitive and accurate, but they require clean environments and special handling. They are used to calibrate high-precision balances and are considered to have extra-fine accuracy.
4. Are calibration weights necessary?
Yes, calibration weights are necessary in most labs to ensure accurate readings from lab balances. They help verify the accuracy of the scales and ensure reliable measurements.
5. What weighs 100 grams to calibrate my scale?
To calibrate a scale with a 100-gram weight, you can use objects like 20 nickels or 40 pennies, which collectively weigh 100 grams. Make sure to wash the scale with water before using the coins and consider using acetone or ethanol for further cleaning.
6. How accurate are calibration weights?
Certified calibration weights have a tolerance of +/-230 milligrams. Using certified calibration weights ensures that your scale is calibrated correctly and provides accurate weighments, which is crucial for accurate readings and proper patient care.
During our calibration weight research, we found 24 calibration weight products and shortlisted 10 quality products. We collected and analyzed 40,806 customer reviews through our big data system to write the calibration weights list. We found that most customers choose calibration weights with an average price of $14.17.
The calibration weights are available for purchase. We have researched hundreds of brands and picked the top brands of calibration weights, including Fuzion, Omama, HFS, Bekith, HESTYA. The seller of top 1 product has received honest feedback from 777 consumers with an average rating of 4.9.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.