Print cost calculator

Estimate the filament cost and electricity cost of a print.

Enter the part weight, waste percentage, spool price, spool weight, print time, printer power, and electricity rate.

The tool returns the used filament weight, filament cost, electricity cost, total cost, and parts per spool.

Formula

Used filament = part weight × (1 + waste percentage ÷ 100).

Filament cost = used filament × spool price ÷ spool weight.

Electricity cost = watts × hours ÷ 1,000 × electricity rate.

Total cost = filament cost + electricity cost. Parts per spool = spool weight ÷ used filament, rounded down.

These formulas come from the existing DrySpool calculator code. They estimate costs from your inputs.

The tool limits inputs to its supported ranges. The starting inputs are examples, not printer measurements.

Catalog price examples

Each example uses a product whose catalog name states 1 kg.

The example print uses the calculator starting inputs: 85 g, 6% waste, 2.8 hours, 135 W, and $0.16 per kWh.

Prices were read on 2026-11-11. Prices and stock change at the store.

Open Print cost calculator