@brewlab/calc/finalGravity.js

Library with methods for calculations used in brewing.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Calculates the final gravity as specific gravity using the estimated yest
 * attenuation and the original (specific) gravity.
 * @param {number} originalGravity Starting specific gravity.(e.x. 1.051)
 * @param {number} attenuation estimated yeast attenuation (e.x. 75%)
 * @returns {number} final gravity as specific gravity
 */
function finalGravity(originalGravity, attenuation) {
    //assume attenuation of 75%
    const attenuationFraction = attenuation / 100;
    const originalGravityPoints = originalGravity * 1000 - 1000;
    const finalGravityPoints = originalGravityPoints - originalGravityPoints * attenuationFraction;
    return finalGravityPoints / 1000 + 1;
}
exports.default = finalGravity;