How do I estimate ink coverage percentage?

Light images with lots of white space are 10-25% coverage. Medium images with mixed tones are 30-50%. Heavy, dark images are 60-80%. Full-coverage solid prints are 100%. Look at your design and estimate the inked area.

Why does ink type affect consumption?

Each technique lays down a different film thickness. Screen printing pushes the most ink through the mesh (~0.01 ml/cm²). Intaglio fills deep grooves (~0.008 ml/cm²). Relief printing uses a moderate amount (~0.005 ml/cm²). Lithographic printing uses the thinnest film (~0.003 ml/cm²). These ml/cm² figures are practical printmaker estimates, not manufacturer datasheet values — the relative ordering (litho thinnest, screen thickest) is well established, but absolute use varies with roller loading, paper and pressure. Use the Custom option to enter your own measured rate.

Are the ink consumption rates exact?

No — they are conservative working estimates, not published manufacturer figures (no maker publishes a single ml/cm² rate because it depends on your roller, paper, pressure and ink body). They lean slightly generous so a purchasing estimate errs on the side of buying enough. For accuracy, weigh or measure the ink you use on a test edition and divide by the covered area, then enter that as a custom rate.

Why add waste, and how much?

Printmaking loses ink through mixing, test prints, cleaning rollers/squeegees, ink left on the slab, and adjusting consistency. The default 1.3 factor adds 30% — a practical allowance for a single colour. Complex multi-colour or registration-heavy work wastes more, so raise the Waste Factor in Advanced Options (up to 2.0 = double).

How much ink is in a standard tube?

Most printmaking ink tubes are 75 ml (e.g., Caligo Safe Wash, Cranfield). Large tins are typically 250 ml or 500 ml. Screen printing ink is sold in larger quantities, often 250 ml to 1 litre.

Can I mix leftover ink?

Yes — leftover printing ink can be saved in airtight containers. Oil-based inks last months if stored properly. Water-based inks may dry out faster. Mix leftovers into neutral colours for future use.

ArtCalcs

Ink Coverage Calculator — Printing Ink Needed

Calculate the amount of printing ink needed based on image area and coverage.

Image Width

Inked image width — measure the block or stencil, not the paper

Image Height

Inked image height — the printed area, excluding margins

Coverage

Share of the image actually inked — line work 10-25%, mixed tones 30-50%, solid fills 80-100%

Number of Prints

Edition size — include test proofs and spares you plan to pull

Ink Type / Technique

How We Calculate This

How Ink Coverage Calculation Works

Ink needed = Covered area × Ink rate × Number of prints × Waste factor

The image area is multiplied by the coverage percentage to get the inked area. This is multiplied by the ink consumption rate (which varies by technique) and the edition size, then by your waste factor (default 1.3 = 30% extra). Adjust the waste factor in Advanced Options to match your workflow.

The ml/cm² consumption rates are practical printmaker estimates, not manufacturer datasheet figures — actual ink use varies widely with roller loading, paper, pressure and ink consistency. The defaults lean slightly generous so you buy enough.

Frequently Asked Questions

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Last updated: February 2026

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