HairMetric builds free calculators and reference tools for people planning braids, extensions, wigs and other protective styles.
Many beauty recommendations are expressed in inconsistent units: “packs,” “bundles,” “3X,” or vague size labels. HairMetric is designed to translate those recommendations into measurements that are easier to compare, while making the assumptions behind each estimate visible.
How we approach estimates
Our tools combine published quantity guidance with transparent calculation rules. Whenever technique varies substantially from stylist to stylist, results are presented as ranges rather than false precision.
What’s next
Future tools may include boho human-hair quantity estimates, braid weight planning, extension gram calculators, wig sizing and cost comparisons.