DIRECT ANSWER & CALCULATION BENCHMARK
How many meters of 1.75mm filament are in a 1 kg spool of PETG?
327.4 meters(approx. 1,074 feet)
A 1 kg spool of 1.75 mm PETG contains roughly 327.4 meters (1,074 feet) of filament. Because PETG is slightly denser than PLA (1.27 vs 1.24 g/cm³), you get ~8 fewer meters per kilogram.
Worked Mathematical Derivation
Key Formulation:
Cylinder volume V = 1000g / 1.27 g/cm³ = 787.40 cm³. Cross section A = 0.02405 cm². Length L = 787.40 / 0.02405 = 32,740 cm = 327.40 meters.Calculate Custom Weight or Length
Adjust the values below or switch materials to calculate your custom spool size and length.
Conversion Mode
grams
Filament Diameter
1.27 g/cm³
RESULTS & BREAKDOWNV=πr²L
Filament Length (m)
327.4meters
≈ 1074.0 feet (0.327 km)
Weight:1000.00 g (1.000 kg)
Linear Mass:3.05 g/meter
Total Volume:787.40 cm³
Cross-Section Area:2.405 mm²
Quick Rule of Thumb
Standard 1.75mm PLA yields approximately 330–335 meters per 1 kg spool. PETG yields ~327m, and ABS yields ~400m due to lower density.⚡
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Frequently Asked Questions
How many meters of 1.75mm filament are in a 1 kg spool of PETG?
A standard 1 kg spool of PETG contains 327.4 meters (1,074 feet). Cylinder volume V = 1000g / 1.27 g/cm³ = 787.40 cm³. Cross section A = 0.02405 cm². Length L = 787.40 / 0.02405 = 32,740 cm = 327.40 meters.
How many hours of printing can you get from 1kg of PETG?
A 1kg spool typically yields between 40 and 80 hours of active printing time, depending on layer height, printing speed, and infill density (e.g. standard 50g models taking 3-4 hours each).
How much does an empty 1kg filament spool weigh?
An empty 1kg filament spool typically weighs between 190g and 260g. Cardboard spools (eSun, Polymaker) weigh ~200g-220g, while sturdy plastic spools (Bambu Lab, Prusament) weigh ~240g-250g.
Why does a 1kg spool of PETG have a different length than other plastics?
Filament length is inversely proportional to polymer density (L = Volume / Area, where Volume = Mass / Density). Lighter polymers like ABS (1.04 g/cm³) yield ~400 meters per kg, while denser materials like PLA (1.24 g/cm³) yield ~335 meters, and PETG (1.27 g/cm³) yields ~327 meters.
How many standard 3DBenchy boats can you print from 1kg of PETG?
A standard sliced 3DBenchy with 2 perimeters and 10% infill weighs approximately 11 to 13 grams. A full 1kg spool can print approximately 75 to 90 complete Benchy models without running out.