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Our range of A3 card sheets includes smooth white and black cardstock in a variety of weights, from lightweight 160gsm card through to heavyweight 700gsm cardstock. Measuring 420mm x 297mm, A3 card offers twice the printable area of A4, making it a popular choice for printing, crafting, signage, design work and creative projects.
Whether you're looking for printer-friendly cardstock for certificates and posters, sturdy card for invitations and greeting cards, or heavyweight card for premium displays and craft projects, you'll find a suitable option in our A3 range.
All white card in this category is FSC certified and supplied with VAT and UK delivery included in the price shown.
What size is A3 card?
A3 card measures 420mm x 297mm, making it twice the size of A4.
What is A3 card used for?
A3 card is commonly used for posters, signage, presentations, invitations, greeting cards, craft projects and professional printing.
Can I print on A3 card?
Many printers can accommodate lighter card weights, but always check your printer's specifications before printing.
What cardstock weight should I choose?
Lighter weights such as 160gsm and 200gsm are suitable for printing and craft projects, while heavier weights including 250gsm, 300gsm and above provide additional rigidity for cards, displays and premium applications.
160gsm Smooth White A3 Craft Card / Thin Cardstock
200gsm Smooth White A3 Craft Card
250gsm Smooth White A3 Craft Card
300gsm Smooth White A3 Craft Card
350gsm Smooth White A3 Craft Card
400gsm Smooth White A3 Craft Card
450gsm Smooth White A3 Craft Card
500gsm Smooth White A3 / Heavy Cardstock
170gsm Black A3 Paper
250gsm Black A3 Craft Card
300gsm Black A3 Craft Card
350gsm Black A3 Craft Card
450gsm Black A3 Craft Card
700gsm Black A3 Craft Card
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