Making your own reusable beeswax food wraps is simple chemistry once you know the weights. This calculator takes your fabric size and a beeswax–pine resin–jojoba ratio and tells you exactly how many grams of each ingredient to melt together for a well-saturated, clingy wrap.
How it works
The tool first computes total fabric area, then the coating mix from a coverage rate, then splits the mix by your ratio:
area (cm²) = width × height × number of wraps
coating (g) = area × 0.045 g/cm²
beeswax (g) = coating × waxParts / totalParts
resin (g) = coating × resinParts / totalParts
jojoba (g) = coating × jojobaParts / totalParts
The default 4 : 1 : 1 ratio of beeswax to pine resin to jojoba gives a firm but flexible, self-clinging wrap. More resin makes it tackier; more jojoba makes it softer.
Example and tips
Three 30 × 30 cm wraps total 2,700 cm² of fabric, needing about 122 g of coating mix — roughly 81 g beeswax, 20 g pine resin, and 20 g jojoba oil at the 4 : 1 : 1 ratio. Melt the resin first as it is the slowest, spread the coating thin and even, and avoid wrapping raw meat. When the cling fades after many washes, re-melt a light top-up coat rather than starting over.