A 3D printing cost calculator for a single print. Take the filament weight (g) and print time your slicer estimates (Cura, PrusaSlicer, Bambu Studio, etc.), then enter the filament price (per kg), the printer's power draw (W) and your electricity rate (per kWh). It works out the filament cost (weight × price), the electricity cost (power × time × rate) and an optional labor/machine cost (hourly rate × time), then sums them. A failure/spare percentage marks the cost up to cover failed prints and discarded supports or brims, and a markup percentage turns the cost into a suggested selling price in one step. It shows the breakdown (filament / electricity / labor), the subtotal and the cost per gram, so you can price prints you sell on Etsy, BOOTH or a marketplace, or build a defensible quote for commissions. Find your filament price per kg by dividing the spool price by its net weight in kg; a small FDM printer typically draws roughly 100–200 W (a plug-in power meter gives the most accurate figure). Every calculation runs in your browser; the numbers you enter are never sent to any server or API.