Grains: Archery Calculator

Build a better hunting arrow. Grains calculates your total arrow weight, FOC, arrow speed, kinetic energy and momentum in one simple archery calculator. Four calculators, no account, no ads, nothing to buy. Numbers carry from one tab to the next, so you enter your arrow build once. ARROW WEIGHT When you build an arrow, you're working with many small components of different weights. Enter your shaft length and grains per inch (GPI), point or broadhead, insert, nock, vanes or fletching, wrap and any additional weight, and Grains adds up your total arrow weight in grains. Change one component and see right away how it affects the whole build. FOC (FRONT OF CENTER) Front of center is an important factor in building an accurate hunting arrow. Enter your arrow length and balance point to get your FOC percentage. Grains also explains how to get an accurate measurement and what an ideal setup…