Garden Hoses
Lawn & Garden · 8 specs
Direct Answer
Residential garden hoses standardize at 5/8-inch (15.9 mm) inside diameter delivering 10–15 GPM, fitted with 3/4"-11.5 NH Garden Hose Threads (GHT). Lightweight hoses measure 1/2-inch (6–8 GPM), while commercial high-flow hoses measure 3/4-inch (18–22+ GPM).
Source: ASME B1.20.7 (Hose Coupling Screw Threads) / RMA Hose Standards · Last reviewed Aug 28, 2026
Specs
| Governing Standards | ASME B1.20.7 (GHT Threads) / RMA Hose Specifications |
| 1/2-Inch Hose (12.7 mm ID) | Flow: 6–8 GPM (23–30 L/min) | Lightweight for balconies and small yards |
| 5/8-Inch Hose (15.9 mm ID) | Flow: 10–15 GPM (38–57 L/min) | Universal residential benchmark |
| 3/4-Inch Hose (19.1 mm ID) | Flow: 18–22+ GPM (68–83 L/min) | Commercial pressure washers & long runs |
| Fitting Thread Standard | 3/4"-11.5 NH (Garden Hose Thread–GHT) with rubber compression washer |
| Light-Duty Burst Pressure | 200 to 250 PSI (14–17 bar) |
| Medium-Duty Burst Pressure | 300 to 400 PSI (21–28 bar) |
| Commercial Heavy-Duty Burst | 500+ PSI (34+ bar) with crush-proof machined brass couplings |
Garden Hose Diameter & Flow Rate Matrix
| Inside Diameter (ID) | Metric ID | Flow Rate at 40–60 PSI | Weight per 50 ft | Primary Use Case |
|---|---|---|---|---|
| 1/2-Inch | 12.7 mm | 6–8 GPM (23–30 L/min) | ~4–6 lbs (1.8–2.7 kg) | Balconies, urban patios, light hand-watering |
| 5/8-Inch | 15.9 mm | 10–15 GPM (38–57 L/min) | ~7–10 lbs (3.2–4.5 kg) | Universal home standard: lawns, sprinklers, car washing |
| 3/4-Inch | 19.1 mm | 18–22+ GPM (68–83 L/min) | ~12–15 lbs (5.4–6.8 kg) | Commercial power washers, farms, runs >100 ft |