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Calculate Bleed, Trim and Safe Area

Calculate full artwork size, trim size and safe area in millimetres and pixels using editable bleed, margin and PPI values.

Quick answer

Bleed expands the artwork outside the final trim; the safe margin moves important content inward. Enter the provider's exact values for each edge to calculate all three boxes.

full canvas = trim + (2 × bleed)
Interactive calculator
full canvas = trim + bleed on both edges

Trim → bleed canvas and safe area

Example values are pre-filled. Results always reflect the values currently shown; replace them with your own measurements before using the result.

Common starting pointsUse the printer's specification when it differs.
Quick targets
Bleed canvasTrimSafe area
Calculated resultsUpdates as you change the inputs
Full canvas in inPrimary result
8.236 × 10.236 in
Full canvas in millimetresResult
209.2 × 260 mm
Canvas at 300 PPIResult
2471 × 3071 px
Safe area in inResult
7.606 × 9.606 in
When to use this tool

Use it for a specific print decision.

  • Use it when a printer supplies a finished trim, bleed on each edge and a safe margin for text or logos.
  • Use it before creating the document canvas so backgrounds extend beyond the cut without moving critical content into the bleed.
  • Use it to convert a provider's millimetre or inch margins into a full raster canvas at the requested PPI.
How to use it

A result you can reproduce.

  1. Enter the final trimmed width and height.
  2. Enter the bleed and safe margin required on each edge.
  3. Use the full canvas dimensions for the artwork and keep critical content inside the safe result.

Every result is calculated in the page from the displayed inputs. Your printer's written production specification remains the final authority.

Worked example · quick scenario

See the basic numbers in context.

A4 trim at 210 × 297 mm with 3 mm bleed becomes a 216 × 303 mm artwork canvas. A 5 mm safe margin leaves a 200 × 287 mm safe area.

Understand bleed, trim and safe area →
Worked calculation

Follow the arithmetic from input to decision.

Inputs

  • Trim: 148 × 210 mm (A5)
  • Bleed: 3 mm each edge
  • Safe margin: 5 mm each edge

Calculation

  1. Artwork width = 148 + 3 + 3 = 154 mm; height = 210 + 3 + 3 = 216 mm.
  2. Safe width = 148 − 5 − 5 = 138 mm; height = 210 − 5 − 5 = 200 mm.
  3. Trim remains 148 × 210 mm; bleed and safe area solve different risks.

Prepare a 154 × 216 mm full artwork canvas and keep critical content inside roughly 138 × 200 mm, using these example requirements.

Assumptions

What must be true for this calculation to apply.

  • The same bleed and safe margin are applied to all four edges.
  • The entered trim size is the finished product size.
  • The printer expects conventional rectangular trim rather than a custom dieline.
Related calculationsPrint size to pixels →Paper size in pixels →Print readiness checker →
From calculation to production

Verify the Bleed & safe area result with your real file.

Bleed expands the artwork outside the final trim; the safe margin moves important content inward. Enter the provider's exact values for each edge to calculate all three boxes. Then compare the result with the print provider's written specification.

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