scoville.js

function map(n, start1, stop1, start2, stop2) {
    return ((n-start1)/(stop1-start1))*(stop2-start2)+start2;
}

function scovilleToLevel(scoville) {
    let log = Math.log10(scoville);
    return map(log, 0, 6, 1, 11); // 6 because Math.log10(1000000)=6
}