How much image do I need for a gallery wrap?

Check aspect ratio before ordering the print

Common print sizes use different ratios. Crop geometry should be evaluated before resolution because cropping changes the pixels that remain for the final print.

Apply the answer to this specific question

Add the wrap allowance to every edge because artwork must continue around the canvas sides. Important faces/text should remain inside the front safe area. The practical consequence should be checked with Gallery Wrap Calculator when your own dimensions, page count, cost or production values differ from the example implied by the question.

What commonly changes the result

For “How much image do I need for a gallery wrap?”, the most important variables are the ones represented by the linked calculator and any provider-controlled specification. A correct arithmetic result can still be unsuitable if the source dimensions, category, page yield, trim, bleed, margin or production method were assumed incorrectly.

A better verification workflow

For How much image do I need for a gallery wrap?, record the source measurement or controlling specification first, then run the real job values through gallery wrap. Keep the result with the job notes, compare it with the physical file or material, and recheck any provider-controlled rule immediately before production or upload.

Practical answer

Add the wrap allowance to every edge because artwork must continue around the canvas sides. Important faces/text should remain inside the front safe area.

When the decision affects a paid print run, book upload, client order or expensive material, keep the calculation with the job notes and verify any external specification again immediately before production.