How To Calculate Arrow Weight In Grains and Grams

Go straight to the Arrow Weight Calculator – CLICK HERE


Go straight to the Grains-to-Grams converter (or vice versa) – CLICK HERE

You need an arrow weight calculator, so you come to the right place. Below, you get a simple and free arrow weight calculator. Just punch in the numbers, and you get the total arrow weight in grams, grains and even pounds.

An arrow’s weight is measured in grains or grams. Most likely in grains because it is a very precise measurement. And when weighing arrows, you need a very precise weight because a heavy arrow is not that much heavier than a light arrow.

When you’re an archer, you know the importance of having the right equipment. One vital piece of equipment is your arrow. Not only does it need to be the right length for your bow, but it also needs to be properly weighted.

If an arrow is too light, it will lose inertia quickly and will be less accurate. If it’s too heavy, it will be more difficult to draw and will cause the string to vibrate more, again affecting accuracy.

So how do you know what weight arrow to use and how to calculate it?

The best way is to actually weigh your arrow. This can be done by using a kitchen scale or a digital scale made specifically for arrows. Once you know the weight of your arrow, you can fine-tune your equipment to help ensure that every shot hits its mark.

three arrows

Try the Arrow Weight Calculator

An arrow weight calculator is a useful tool if you are trying to figure out the optimal weight for your arrows. There are a number of factors that can affect the accuracy and distance of an arrow, and the weight is an important one. An arrow weight calculator can help to take some of the guesswork out of the process by providing guidance based on the specific specs of the arrow. With this information, archers can make small adjustments to fine-tune their equipment until they achieve the perfect setup for their needs.

This arrow weight calculator can also measure the weight of an arrow in grams.

Or you can find a Grains-to-Grams weight converter below the arrow weight calculator.

Grains to Gram converter | Grams to Grains converter

Use this weight converter to convert Grains-to-Grams or Grams-to-Grains.

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What parts of an arrow do you actually weigh?

The weight of an arrow is determined by the sum of its component parts, including the shaft, fletching, nock, and point. The shaft is the main body of the arrow and is typically made from either wood or carbon fiber. The fletching is the feathers or vanes that are attached to the shaft and help to stabilize the arrow in flight. The nock is the notch at the back of the arrow that holds it in place on the bowstring. The point is the sharp tip of the arrow that penetrates the target. When choosing an arrow, it is important to consider the weight of each of these components in order to ensure that the arrow is balanced and will fly straight.

Do you know what weight your arrow should actually have?

How to measure arrow weight

As mentioned, measuring the weight of your arrows is an important part of choosing the right arrows for your bow. Luckily, it’s easy to do with a simple kitchen scale.

First, find the point where the arrow meets the shaft. This is typically about halfway down the arrow.

Next, place the arrow on the scale so that the point is resting on the platform. Be sure to support the shaft so that it doesn’t bend.

Finally, take a reading and multiply by two to get the total weight of the arrow. Now that you know how to measure arrow weight, you can be sure to choose arrows that are the right weight for your bow.

Why are arrows measured and weighed in grains?

Arrows are typically measured in grains, with one grain being equivalent to 0.065 grams (1/7000th of a pound). The grain is the unit of measurement for mass in the imperial system, and it is used for arrows because of its small size. One pound equals 7,000 grains, so a single grain is quite tiny.

However, when dealing with something as small and light as an arrow, even a single grain can make a difference. That’s why arrows are weighed in grains, in order to get a more accurate measure of their mass.

This allows archers to fine-tune their equipment and choose the perfect arrow for their needs. In addition, measuring arrows in grains also makes it easier to compare different types of arrows and choose the ones that will perform the best.

Arrow weights

Choosing arrow weight

When it comes to arrow shooting, arrow weight plays an important role in accuracy, range, the bow, and the sound level. Depending on what you’re using the arrow for – whether it be hunting or 3D target practice – you will want to choose the arrow weight that best suits your needs. And let it be said, there are lots of preferences here, so you have to do some testing for your own as well.

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For 3D target shooting, a lighter arrow is commonly used, while heavier arrows are used for hunting due to their increased kinetic energy when shot.

Lighter arrows typically weigh between 5 and 7 grains per pound of draw weight, while arrows used for hunting generally weighs more than 7 GPP of draw weight.

When choosing arrow weights suitable for your purpose, it is important to take into consideration the bow’s draw weight as well as the arrow’s total length, construction materials and components being used.

If you are doing target practice, have an arrow weight of around 5 to 7 GPP of draw weight. A bow with a draw weight of 60 lbs., use arrows that weigh between 300 and 420 grains.

If you want to hunt, go for an arrow with a total weight of between 6 and 8 GPP of draw weight. A 50 lbs. draw compound bow would mean an arrow weight of between 300 and 400 grains.

Values will of course vary. I also depend on what type of animal you are hunting. E.g. if you are hunting elk, you should use at least a 50 lbs. bow. At around 40 lbs. you would be hunting for e.g. whitetail deer.

How much are 100 grains?

If each grain is equivalent to 0.065 grams (1/7000th of a pound), then 100 grains would be approximately 6.5 grams (0.01433 pounds).

Grains > Grams > Pounds

  • 100 grains = 6.5 grams = 0.01433 pounds
  • 200 grains = 13 grams = 0.02866 pounds
  • 300 grains = 19.5 grams = 0,04299 pounds
  • 400 grains = 26 grams = 0.05732 pounds
  • 500 grains = 32.5 grams = 0,07165 pounds
  • 600 grains = 39 grams = 0,08598 pounds

How much does a light arrow weigh?

A light arrow weighs about 350 to 400 grains = 22.7 – 26 grams.

How much does a standard arrow weigh?

A standard arrow weighs about 400 to 460 grains = 26 – 29.8 grams.

How much does a heavy arrow weigh?

A heavy arrow weighs about 460 grains or more = 29.8 grams and up.

What does GPI mean?

What exactly does GPI mean? GPI stands for “grains per inch,” and it’s a way of measuring the weight of an arrow.

To calculate the GPI of an arrow, simply divide the arrow’s total weight (in grains) by its length (in inches). The resulting number will give you the arrow’s GPI.

For example, if an arrow is 20 inches long and weighs 400 grains, its GPI would be 20. The higher the GPI of an arrow, the heavier it is.

How to change the weight of an arrow?

If you are not satisfied with the performance of your arrows, changing the weight is a relatively simple process that can be done with a few basic tools.

First, remove the arrowhead and fletching. Then, use a scale to weigh the shaft and determine how much weight needs to be added or removed. Once you have determined the desired weight, you can add weight by gluing on brass inserts or carefully removing material from the shaft with a rasp.

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Finally, reattach the arrowhead and fletching and test-shoot the arrow to check its flight characteristics. By following these simple steps, you can easily change the weight of your arrows to suit your needs.

How to change the overall arrow weight

Choosing the right arrow is finding the perfect balance of weight and durability. If an arrow is too light, it will not have enough kinetic energy to penetrate deep into the target. On the other hand, if an arrow is too heavy, it will be difficult to control and may cause inaccuracies.

One common method of changing arrow weight is by changing the type of shaft material. For example, arrows made from carbon fiber are typically lighter than those made from aluminum. As a result, carbon fiber arrows are often used for hunting, as they can be shot with more speed and accuracy.

Another way to change arrow weight is by adding or removing fletching. The fletching is the feathers or plastic vanes attached to the back end of the arrow, and they help to stabilize the flight of the arrow. By removing fletching, you can decrease drag and wind resistance, making the arrow lighter and easier to control.

Finally, you can also add weight to an arrow by attaching a weight to the front end of the shaft. This helps to increase penetration power, but it also makes the arrow more difficult to control. Ultimately, finding the right method of changing overall arrow weight is a matter of experimentation and personal preference.

How to use arrow weight systems

The weight of your arrow affect your shots. Here’s a quick guide on how to use arrow weight systems to help improve your accuracy.

The important factor in determining the weight of your arrow is the draw weight of your bow. This is the amount of force required to draw the bowstring back to its full length. A heavier arrow will require more force to pull back, while a lighter arrow will be easier to draw. As a result, it’s important to choose an arrow weight that is appropriate for your bow.

Once you’ve selected the right weight for your arrow, you can begin fine-tuning your shots by adjusting the point of impact. It can be adjusted by changing the position of the rest or by adding weights to the shaft. If you’re having difficulty hitting your target, try moving the point of impact closer to the center of the target. Conversely, if you’re finding that your arrows are grouping too closely together, try moving the point of impact further away from the center. By experiment with different positions, you can find the setup that works best for you and improve your accuracy on the range.

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