Front of Center (FOC) Calculator – Optimize Arrow Balance, Accuracy & Weight

What is FOC?

FOC stands for “Front of Center.” It’s a estimation that appears how much of an arrow’s weight is concentrated toward the front (the tip).

Think of it like this: If an bolt is impeccably adjusted, it would have rise to weight on both sides of its center. But in arrow based weaponry and bowhunting, you ordinarily need more weight at the front since it makes a difference the bolt fly straighter and hit harder.

Why is FOC Important?

FOC influences an arrow’s:

• Steadiness – A legitimate FOC guarantees that the bolt remains on track and doesn’t wobble in the air.
• Exactness – A well-balanced bolt flies more accurately and consistently.
• Entrance – Heavier tips offer assistance the bolt hit the target with more constrain, which is pivotal for hunting.

Most toxophilites point for an FOC between 10% and 15%, but it depends on the sort of shooting you’re doing.

What is an FOC Calculator?

An FOC Calculator is a device that makes a difference you rapidly discover out your arrow’s FOC rate. Instep of doing the math yourself, you fair enter a few numbers, and the calculator does the work for you!

• Spare Time – No require for complicated formulas.
• Get Precise Comes about – No chance of calculation mistakes.
• Alter Your Setup – If your FOC isn’t right, you can change your arrow’s weight to settle it.

How to Calculate FOC (Formula & Example)

If you need to get it how an FOC Calculator works, here’s the FOC formula:

FOC (%) = (How much the arrow is front-heavy ÷ Total arrow length) × 100

Step-by-Step Example

Let’s say you have an arrow with these details:

• Total Arrow Length = 30 inches
• Balance Point (from the back of the arrow) = 19 inches

Now, let’s calculate:

Find the arrow’s center:

30 inches÷2=15 inches

Find the front weight shift:

19 inches−15 inches=4 inches

Apply the formula:

(4÷30)×100=13.3%

So, this arrow has an FOC of 13.3%, which is a great balance for both accuracy and penetration.

How to Use an FOC Calculator

Instead of doing all the math, you can use an FOC Calculator. It’s super easy!
Step 1: Enter Your Arrow Length
Type in the total length of your arrow (from nock to tip).
Step 2: Enter Your Balance Point
Measure the balance point (where the arrow balances when placed on your finger) and enter the value.
Step 3: Click “Calculate”
Press the calculate button, and the tool will instantly give you the FOC percentage!

What is a Good FOC for Archery?

The best FOC depends on what you’re utilizing your bolts for:

Target Shooting – 8% to 12% (More steady, superior long-range accuracy)

Bowhunting – 10% to 15% (Way better entrance and more profound impact)

Extraordinary Chasing – 15% to 20% (For extra-heavy setups, as a rule utilized for huge animals)

If your FOC is as well moo, the bolt may be unsteady in flight. If it’s as well tall, the bolt may lose speed.