Resin Cost Calculator

Total the resin, hardener, pigment, inclusions, mould and consumables for a project and see the cost of each piece.

The resin itself is usually the largest line in a resin project, but the mould, the pigment and the consumables are what turn a cheap-looking cost into a real one. This calculator totals every line for a project and returns the cost per piece, so you can see which line is worth attacking before you order. It is a costing tool only, and the safety and handling of the materials come from the supplier.

At a glance

What you enter: Pieces in the project, Resin (part A) used on the project, Part A price per millilitre, Hardener (part B) used on the project, Part B price per millilitre, Pigment as a share of the resin volume, Pigment price per millilitre, Inclusions used, Inclusions price per millilitre, Mould purchase price, Pours the mould will survive, Consumables for the project, Delivery and tax on the order
What you get: Cost of the whole project, Cost per piece, Project cost per millilitre of resin, Resin and hardener share, Mould share, Consumables and delivery share
Formula shown: Yes, every step, right below your results.
Cost and privacy: Free, no account needed, and nothing you type is stored.

See worked examples ↓ Read the FAQ ↓ Share this calculator ↓

Pieces in the project

Resin (part A) used on the project ml

Include the waste allowance, because it is resin you paid for.

Part A price per millilitre USD/ml

Divide the kit price by the kit volume if that is all you know.

Hardener (part B) used on the project ml

Part B price per millilitre USD/ml

Pigment as a share of the resin volume %

Three to six percent gives an opaque colour. Use much less for a translucent tint.

Pigment price per millilitre USD/ml

Pigment is usually sold by weight, so convert using the weight on the bottle.

Inclusions used ml

Glitter, dried flowers, metal flakes, embedded objects. An estimate by volume is enough.

Inclusions price per millilitre USD/ml

Mould purchase price USD

The full price of the mould, not a share of it. The tool spreads it across the pours below.

Pours the mould will survive

A silicone mould often lasts 20 to 50 pours if it is treated well. Enter 1 if the mould is made for one project only.

Consumables for the project USD

Cups, stirrers, gloves, tape, sandpaper, polish.

Delivery and tax on the order USD

Reset

Results are estimates for general information only, always verify with a professional or official source before acting on them.

How to use the Resin Cost Calculator

1 Enter Pieces in the project
2 Enter Resin (part A) used on the project (ml), Include the waste allowance, because it is resin you paid for.
3 Enter Part A price per millilitre (USD/ml), Divide the kit price by the kit volume if that is all you know.
4 Enter Hardener (part B) used on the project (ml)
5 Enter Part B price per millilitre (USD/ml)
6 Enter Pigment as a share of the resin volume (%), Three to six percent gives an opaque colour. Use much less for a translucent tint.
7 Enter Pigment price per millilitre (USD/ml), Pigment is usually sold by weight, so convert using the weight on the bottle.
8 Enter Inclusions used (ml), Glitter, dried flowers, metal flakes, embedded objects. An estimate by volume is enough.
9 Enter Inclusions price per millilitre (USD/ml)
10 Enter Mould purchase price (USD), The full price of the mould, not a share of it. The tool spreads it across the pours below.
11 Enter Pours the mould will survive, A silicone mould often lasts 20 to 50 pours if it is treated well. Enter 1 if the mould is made for one project only.
12 Enter Consumables for the project (USD), Cups, stirrers, gloves, tape, sandpaper, polish.
13 Enter Delivery and tax on the order (USD)
14 Press Calculate. You get Cost of the whole project, Cost per piece, Project cost per millilitre of resin, Resin and hardener share, Mould share, Consumables and delivery share, and every intermediate step stays visible under "How is this calculated?"
15 Change one number at a time to see what moves the result, that is usually the most useful thing a calculator can tell you.

Worked examples

Real numbers run through this calculator. Open any example to load it into the form above and change it.

Eight coasters from one mould

A 500 ml resin kit, pigment at 4 percent, 40 ml of inclusions, a 24 dollar mould and 6 dollars of consumables.

You enter

Pieces in the project: 8
Resin (part A) used on the project: 500 ml
Part A price per millilitre: $0.04
Hardener (part B) used on the project: 250 ml
Part B price per millilitre: $0.04
Pigment as a share of the resin volume: 4%
Pigment price per millilitre: $0.20
Inclusions used: 40 ml
Inclusions price per millilitre: $0.15
Mould purchase price: $24.00
Pours the mould will survive: 30
Consumables for the project: $6.00
Delivery and tax on the order: $0.00

You get

Cost of the whole project: $48.65
Cost per piece: $6.08
Project cost per millilitre of resin: $0.10
Resin and hardener share: 54.0%
Mould share: 13.2%
Consumables and delivery share: 12.3%

Resin and hardener come to about 26.25, so the project lands near 48.65 and about 6.08 per coaster.

Open this example in the calculator →

One off tray with a new mould

A single large tray where the mould is bought for the project and counted in full.

You enter

Pieces in the project: 1
Resin (part A) used on the project: 900 ml
Part A price per millilitre: $0.04
Hardener (part B) used on the project: 450 ml
Part B price per millilitre: $0.04
Pigment as a share of the resin volume: 3%
Pigment price per millilitre: $0.20
Inclusions used: 120 ml
Inclusions price per millilitre: $0.15
Mould purchase price: $45.00
Pours the mould will survive: 1
Consumables for the project: $10.00
Delivery and tax on the order: $0.00

You get

Cost of the whole project: $125.65
Cost per piece: $125.65
Project cost per millilitre of resin: $0.14
Resin and hardener share: 37.6%
Mould share: 35.8%
Consumables and delivery share: 8.0%

The mould alone is 45 of a roughly 106 project, which is why a one off piece has to be priced differently from a batch.

Open this example in the calculator →

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Frequently asked questions

How much does it cost to make a resin coaster?

For a coaster using about 60 millilitres of resin, the resin and hardener is often the smallest part of the cost once the mould, the pigment and the consumables are counted. A mould costing 24 dollars and lasting 30 pours contributes 80 cents to each coaster, and cups, gloves and polishing add more. Enter your own prices, because a supplier kit bought in bulk can halve the resin line.

Should I include the waste allowance in the cost?

Yes. Resin left in the cup, on the stirrer and in the mixing pot is resin you paid for and cannot use, so it belongs in the volume you cost. That is the honest reason a 12 percent waste allowance appears in these tools: it is a real cost, not a rounding error, and on a large project it is worth money.

How do I work out a price per millilitre from a kit?

Divide the kit price by its total mixed volume in millilitres. A 1.5 litre kit at 60 dollars is about 0.04 dollars per millilitre. Do not divide by the volume of one part alone, because the kit includes both parts and the mixed volume is what you pour. If the kit is quoted by weight, divide the weight by the density to get millilitres first.

Why has the mould cost been divided across pours?

Because a durable mould is a tool, not a material. Charging the whole purchase price to the first project makes that project look unprofitable and every later one look free. Spreading it across the pours you expect from the mould gives a cost per piece you can compare with your selling price. Enter 1 in the pours field if the mould is a one use vacuum formed tray or a timber dam you will break up.