Fiber optic cable weight and price vary by type, core count, and construction, with single-mode cables generally lighter and less expensive per foot than multimode or armored variants.

Typical Fiber Optic Cable Weights

• 1-core 900µm tight-buffered fiber: 0.9 kg/km, outer diameter 0.9 mm, suitable for pigtails and patch panels, with a minimum bend radius of 30 mm during installation (temperature range -20°C to +70°C) .
• Multicore indoor/outdoor cables: Weight increases with strand count and jacket type. For example, a 12-strand multimode cable may weigh 5–10 kg/km, while armored or direct-burial cables can exceed 20 kg/km depending on protective layers and materials .
• Armored or plenum-rated cables: Additional layers for mechanical protection or fire safety increase weight significantly, often 2–3 times heavier than standard indoor cables .

Price Ranges

• Single-mode fiber (OS1/OS2): $0.10–$0.50 per foot for the cable itself; bulk purchases reduce costs by 20–40% .
• Multimode fiber (OM1, OM2, OM3, OM4): $0.30–$1.00 per foot depending on strand count and jacket type .
• High-count backbone cables (e.g., 288 strands): Can reach $6 per foot or more, especially for pre-terminated or armored assemblies .
• FTTH drop cables (1-core): Approximately $0.13 per foot .
• Wholesale bulk purchases: $0.09–$1.52 per foot depending on fiber type, jacket, and quantity .

Factors Affecting Weight and Price

1. Fiber Type: Single-mode fibers are lighter and cheaper per foot than multimode fibers due to smaller core diameters and simpler transceivers .
2. Strand Count: More fibers per cable increase both weight and cost proportionally.
3. Jacket Material: LSZH, plenum, or armored jackets add weight and cost.
4. Installation Environment: Outdoor, direct-burial, or aerial-rated cables are heavier and more expensive than indoor riser-rated cables .
5. Pre-terminated Assemblies: Factory-terminated cables with connectors cost more than raw cable spools .

Summary

For planning purposes, lightweight 1-core tight-buffered cables weigh around 0.9 kg/km and cost $0.10–$0.50 per foot, while high-count, armored, or pre-terminated cables can weigh 20+ kg/km and cost $6 per foot or more. Always consider fiber type, strand count, jacket rating, and installation environment when estimating both weight and price for fiber optic projects .