How much PVA glue do I need per square metre?

The recommended spread rate for PVA wood glue is approximately 150-200 g/m² for a single glue line. This calculator uses 175 g/m² as the standard rate. For end-grain joints, you may need more as end grain absorbs glue more readily.

Should I apply glue to both surfaces?

For the strongest bond, apply glue to both mating surfaces. This doubles the glue area calculation. Single-sided application can work for face-grain to face-grain joints but is not recommended for edge joints or end grain.

How long does wood glue take to dry?

PVA glue typically reaches handling strength in 30-60 minutes and full cure in 24 hours at 20°C. Polyurethane glue takes 1-4 hours for initial set and 24 hours for full cure. Temperature below 10°C significantly slows drying.

What is the shelf life of wood glue?

Unopened PVA glue lasts 1-2 years. Once opened, use within 12 months. Store between 10-25°C. If the glue has lumps, a stringy texture, or has separated and won't remix, it should be replaced.

WoodCalcs

Wood Glue Calculator — Calculate PVA & Glue Quantities

Calculate how much wood glue you need based on joint areas, glue type, and number of surfaces to coat.

Glue Type

Joint Length

Length of the glue surface

Joint Width

Width of the glue surface

Number of Joints

Apply glue to both surfaces

Recommended for strongest bond

Bottle Size (optional)

Price per Bottle (optional)

How We Calculate This

This calculator estimates wood glue quantities based on the area of your joints and the recommended spread rate for your chosen glue type.

The formula

Glue needed (g) = Total joint area (m²) x Spread rate (g/m²)

Joint area is calculated from the length and width of each joint surface. If gluing both sides (recommended), the area is doubled.

Spread rates used

PVA: 175 g/m² | Polyurethane: 150 g/m² | Hide glue: 200 g/m² | Aliphatic resin: 175 g/m². These are industry-standard rates for optimal bond strength.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify measurements and material quantities before cutting or purchasing.