Resin 3D Print Cost & Time Calculator
Work out the cost and print time of an MSLA / SLA resin print — resin used including supports and a failure allowance, wash IPA and electricity, price per litre — and the time from model height, layer thickness, exposure, lift/retract and bottom layers, with a per-part price when printing a full plate.
How it works
layers = height ÷ layer thickness · time = bottoms × (bottom exposure + lift) + (layers − bottoms) × (exposure + lift) · resin = model mL × (1 + supports) × parts × (1 + waste) · cost = resin ÷ 1000 × price/L + IPA + electricity
A resin printer cures a whole layer at once, so unlike FDM the time is set by the number of layers and how long each takes, not by how much of the plate is covered — a lone miniature and a plate of twenty print in the same time. Each layer needs its exposure plus the mechanical lift that peels the cured film off the vat and lowers it back, and the peel step is often the larger share, which is why release films and lower lift heights matter more than a brighter screen. Cost is dominated by resin, and the slicer's figure needs marking up for supports, the resin that clings to the part and drips away, the occasional failed print, and the alcohol used to wash it.
Worked example
One 35 mL part with 15% supports uses about 40 mL; with 10% waste, 44 mL of $30/L resin costs $1.33, plus roughly $0.18 of IPA and $0.03 of power — $1.54. A 60 mm tall part at 50 µm is 1,200 layers: 6 bottom layers × 37 s and 1,194 × 9.5 s ≈ 3 h 13 min. Printing ten of them on the plate takes the same 3 h 13 min for about $15.
Frequently asked questions
Does layer height affect resin cost?
No — volume is volume. It only changes the number of layers and therefore time; thinner layers also usually need slightly less exposure each, which the table approximates.
What is a realistic failure allowance?
5–10% for well-supported parts on a calibrated printer; 20% or more when dialling in a new resin or printing large flat surfaces, which are prone to suction failures.
Related calculators
Estimates from typical slicer defaults, material data sheets and print-shop conventions. Your printer, filament batch, press and workflow will differ — run a test piece and calibrate before committing a batch.