420Calc
Cannabis retail calculators for pricing, potency, margins, and production planning.
Calculator Suite
Fast static tools for everyday cannabis retail decisions.
Bulk / Flower Pricing Calculator
Convert wholesale lots into gram, eighth, quarter, half, ounce, revenue, and margin math.
LiveInfused Pre-Roll Calculator
Estimate blend potency, total THC, per-roll dose, and usable production weight.
LiveMargin Calculator
Back into retail targets, margin bands, and markup from cost and target shelf price.
LiveEdible Batch Calculator
Plan batch potency, serving counts, cannabinoid totals, and target dose per unit.
LiveUnit Converter
Move between grams, ounces, pounds, milligrams, and common retail package sizes.
LiveYearly Spend Calculator
Normalize purchase habits into daily, weekly, monthly, yearly, and cost-per-gram estimates.
LiveDab MG Calculator
Estimate total THC, post-loss potency, milligrams per dab, and grams per dab.
LiveRobinson Rating™
Score products with an opinionated weighted rating across price, potency, terpenes, freshness, and effects.
Project Notes
420Calc started as a quick negotiation calculator for checking bulk flower deals. It is now shaped as a simple cannabis retail math toolkit: clean static pages, no build process, no database, and calculations that stay close to the real questions buyers and operators ask.