What is the difference between dry and cured?

Touch-dry means the surface is dry enough not to smudge. Recoat-ready means you can apply another layer. Fully cured means the paint has reached its maximum hardness and durability. For acrylics, full cure takes 3 to 7 days. For oils, it can take weeks to months.

Why does temperature affect drying time?

Higher temperatures speed up evaporation (for water-based paints) and oxidation (for oil paints). Below 10 degrees Celsius, acrylics may not form a proper film. The ideal temperature for most paints is 18 to 25 degrees Celsius with moderate humidity.

How does humidity affect paint drying?

High humidity slows evaporation of water from water-based paints. Above 80% humidity, acrylics and watercolours dry very slowly and may develop a hazy or tacky surface. Oil paints are less affected by humidity but very high levels can slow oxidation.

ArtCalcs

Paint Drying Time Calculator

Calculate paint drying and curing times based on paint type, coat thickness, temperature and humidity.

Paint TypeType of paint used

Coat ThicknessHow thick the paint is applied

Temperature

Room or studio temperature

Humidity

Relative humidity in your workspace

How We Calculate This

Drying Time Calculation

Adjusted Time = Base Time x Thickness x Temperature x Humidity x Ventilation x Surface

Each factor increases or decreases the base drying time. Optimal conditions (20°C, 50% humidity, good ventilation) give the shortest drying time.

Frequently Asked Questions

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Last updated: March 2026

All calculations are estimates. Always verify quantities before purchasing materials.