Resin kit value calculator

Which kit size is the best deal, cost per litre from the prices you are looking at, because the number on the listing is not the number that matters.

KIT PRICES
Prices at what you see
Enter the listing price for each kit size you are comparing. Leave at zero to skip a size.
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Check the listing is the kit price rather than the resin bottle alone, a listing that quotes only the resin part looks a third cheaper than it is.
RESULTS
Best value per litre
$13.65 per litre, 3 gallon kit
$44.00 per litre for craft-store starter kit 69% cheaper per litre
All kits compared
KitPer litre
3 gallon kit$13.65
1.5 gallon kit$14.97
Gallon kit$15.85
Quart kit$36.98
Craft-store starter kit$44.00
The volume shown is total mixed, resin and hardener together, which is how a kit is described. A listing that quotes only the resin bottle is describing half the product.

How this is worked out

The per-litre comparison is the sum a shelf full of listings makes impossible: kit price divided by the pack’s mixed volume in millilitres, multiplied by 1000. The result answers one question, how much resin each dollar buys at each size, and nothing else. It does not tell you whether a kit is any good, whether deep pour is the right system, or whether the brand behind the listing ships what it advertises. It tells you whether the larger size is worth the larger number, which is the question this page exists for. The “For a project” view adds a second sum: how many whole kits a project needs at each size, rounded up because you cannot buy 1.3 of a kit, and whether the leftover makes the bigger kit more expensive in total.

per_litre = (kit_price ÷ pack_ml) × 1000
packs = ceil(project_ml ÷ pack_ml)
spend = packs × kit_price
leftover = (packs × pack_ml) − project_ml

Questions makers ask

Is a gallon kit always the best deal?
Almost always. A gallon holds 7.6× the resin of a craft-store starter kit on a shelf, and the per-litre price drops steeply up to that size. Past a gallon the saving per litre is smaller and the shelf life risk is real, an opened bottle cures in months, not years.
Should I always buy the cheapest per litre?
Only if you will use it. The 3 gallon kit is the cheapest per litre but holds 11.4 litres mixed. Buying it for a set of coasters leaves almost all of it on the shelf, and opened resin absorbs moisture that turns the next pour cloudy. The “For a project” view shows total spend for a known volume, which is often the better number.
What does "mixed volume" mean?
Resin and hardener together, the total liquid you end up with after mixing. That is how a kit is sold and how a pour is measured. A "1 gallon kit" of a 2:1 system holds two thirds of a gallon of resin and one third of hardener, giving one gallon when combined. If a listing quotes only the resin bottle, it is describing roughly two thirds of the kit.
How do I know a listing is the kit price?
Look for "total kit weight" or confirm both bottles are included. A listing that quotes only the resin part, the bigger bottle in a 2:1 system, looks about a third cheaper than the actual kit. This tool compares kit prices, so entering a bottle-only price gives a per-litre figure that is too optimistic.
Does deep pour resin cost more per litre?
Typically yes, about 50 % more per gallon than a table top coating, because the chemistry that lets it pour thick without overheating costs more to make. The tool handles this by letting you enter the actual price you see, which already has the chemistry in it.

Read before your next batch

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