Easy Epoxy Calc

How much resin for a 50 × 70 cm canvas?

Short answer

A 50 × 70 cm canvas (3,500 square centimetres) needs about 1,155 milliliters of mixed resin — about 1.2 liters — for a full 3 millimetre coat, including 10% extra: 578 milliliters each of resin and hardener for a 1:1 product.

How to work it out

  1. Area: 70 cm × 50 cm = 3,500 cm²
  2. 3,500 cm² × 3 mm = 1,050 cm³ = 1,050 ml; + 10% = 1,155 ml (≈ 1,213 g on a scale)
  3. Mix ratio 1 : 1 by volume, SG A 1.15 / B 0.95 (typical, not published by the maker — type your data sheet’s SGs for exact weights) → Part A 578 ml (664 g) + Part B 578 ml (549 g)

A 50 × 70 cm canvas is a common European poster and frame size. In metric the check is easy: every 100 cm² at 3 mm is 30 ml, and 3,500 cm² works out to 1,050 ml before waste.

Adjust for your project

cm
cm
Most resin boxes’ coverage claims assume a thin coat — pick 1.5 mm to match the box. 3 mm is a full, glassy, self-levelled coat and uses about twice as much.
ml
Total of both bottles together, e.g. a 1,000 ml kit = 500 ml + 500 ml.
More options: waste · ratio · SG A …
%
Cup residue and drips
Only changes the Part A / Part B split — it’s printed on the kit. Tabletop and art resins are usually 1:1; deep pour often 2:1.
From the TDS, in g/ml. Leave blank for 1.15 (typical, not published by the maker).
From the TDS, in g/ml. Leave blank for 0.95 on 1:1 kits or 0.97 on other ratios (typical, not published by the maker).
ml
Your own limit per cup or bucket. Go smaller if your resin has a short working time.
Art resin to buy1,155 ml39.1 fl oz
Whole batch by weight, incl. waste (kitchen scale)
1,213 g
Kits to buy
2 kits
Mixing batches
1 batch
When mixing — Part A (resin)
578 ml (19.5 fl oz)
When mixing — Part B (hardener)
578 ml (19.5 fl oz)
Part A by weight
664 g (23.4 oz)
Part B by weight
549 g (19.4 oz)
Left over from the last kit
845 ml (28.6 fl oz)
  • What to buy: 2 × 1,000 ml art resin kits. Each kit has both bottles (resin + hardener) — you don’t buy them separately. Looking at a different kit size? Change Kit size above.
  • ml = measured in a cup; g = weighed on a scale. Use whichever your resin label gives.

For this job · affiliate link
Clear art resin kitYou need 1,155 ml; 2 × 1,000 ml kits leaves 845 ml over, so topping up with a smaller kit may be cheaper — compare kit sizes. A 1:1 art resin self-levels over a painting without needing a scale.
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Kits and leftover by kit size (50 × 70 cm at 3 mm)

Kits and leftover by kit size (50 × 70 cm at 3 mm)
Kit size (A + B)Kits to buyLeft over from the last kit
500 ml kit3 kits345 ml
1,000 ml kit2 kits845 ml
1,500 ml kit1 kit345 ml
2,000 ml kit1 kit845 ml

What to know about a 50 × 70 cm canvas

Check how your kit is labelled. Resin sold in Europe is often sized by weight, not volume: a “1 kg” kit is only about 900 ml of mixed resin at a typical density of around 1.1 g/ml, while a “1 L” kit is a liter. Either way one kit is short for a full coat here. A 1.5 L kit covers it with about 345 ml left over; two 1 kg kits are the other common answer.

If you measure by weight, the whole coat is about 1,213 g of mixed resin. Many European art resins print a weight ratio next to the volume ratio, and on a scale you can mix to the gram — easier than reading a liter jug.

At about 20 × 28 in, this sits between the US 18 × 24 and 24 × 36 sizes, and it’s still a single batch at the default 1,500 ml limit. A thin 1.5 mm coat halves the resin (see below) but won’t self-level into the glassy finish most people want on a poster-size piece; plan on the full 3 mm unless the surface is already smooth and sealed.

The nearest imperial sizes are how much resin for an 18x24 canvas and how much resin for a 24x36 canvas.

Different size? Use the full Resin Art Calculator.

What you’ll need

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Frequently asked questions

How much resin for a 50x70 cm canvas at 1.5 mm?

About 578 milliliters with 10% extra — 289 ml each of resin and hardener, spread thin rather than self-levelled.

How much resin for a 50x70 cm canvas with 2 cm sides?

About 1,313 milliliters for a full 3 mm coat over the top and 2 cm sides, with 10% extra — 2 kits of 1 liter.

Other common sizes

Sources