Garden Hose Flow Rate Calculator

Calculate water flow, fill times, and irrigation capacity for your garden

📍 Location & Water Supply Municipal Water Avg Pressure: 50 PSI

Location: United States (Default)
50 PSI
1.0x
Water Quality: Good Demand: Average Restrictions: None

⏱️ Water Flow Time Calculator Minutes Gallons

Time Needed: 12.5 minutes
Enter volume to calculate fill time
Volume Delivered: 750 gallons
Enter time to calculate volume delivered

Hose & System Details

25′ 50′ 250′
20 PSI 50 PSI 100 PSI

Flow Rate Results

12.5 GPM
GPM
L/min
IPS
IPM
CFS
CFM
Gallons per Minute (GPM): 12.5
Liters per Minute (L/min): 47.3
Inches per Second (IPS): 0.8
Inches per Minute (IPM): 48.2
Cubic Feet per Second (CFS): 0.028
Cubic Feet per Minute (CFM): 1.67
Flow Rate Gauge Good Flow
12.5 GPM
Low Ideal High
Fill Times:
5-Gallon Bucket
24 seconds
55-Gallon Drum
4.4 minutes
100 sq ft Garden
15 minutes
Children’s Pool
45 minutes

Flow Rate Guide

Low: < 5 GPM – Slow filling

Ideal: 8-15 GPM – Good for most tasks

High: 15-25 GPM – Fast filling

Very High: 25+ GPM – Professional

Pressure Loss Factors

• Each 100 ft hose: -10-20% flow

• Each 10 ft elevation: -4.3 PSI

• Smaller diameter: Less flow

• Kinks & fittings: Reduce flow

Watering Tips

• Water early morning

• Use soaker hoses for beds

• Check for leaks regularly

• Match flow to soil type

Understanding Your Flow Rate

Flow rate determines how quickly you can water your garden and fill containers. A standard 5/8″ hose at 50 PSI typically delivers 8-12 GPM. Longer hoses, smaller diameters, and uphill runs reduce flow. For drip irrigation, you’ll need lower flow rates (2-5 GPM) and might need a pressure regulator. Check local water restrictions during drought periods. Consider using multiple hoses or larger diameter for high-demand applications.