Conversion Factor: Gallon per Second to Litre per Day

1 gal/s = 327,059.5781 l/d

Understanding the Units

Gallon per second (gal/s) measures how many US liquid gallons flow each second. It is common in pump specifications, fire‑suppression systems, and industrial processes.

Litre per day (l/d) measures how many litres flow over a full 24‑hour period. It is useful for daily water‑usage calculations, irrigation planning, and environmental reporting.

How to Convert

Formula

To change a flow rate from gallons per second to litres per day, multiply by the conversion factor:

l/d = gal/s × 327,059.5781

To reverse the conversion, divide by the same factor:

gal/s = l/d ÷ 327,059.5781

Worked Example

Imagine a water pump that delivers 3 gal/s. How many litres does it move in one day?

1. Write the known value: 3 gal/s.
2. Apply the formula: 3 × 327,059.5781 = 981,178.7343 l/d.
3. Result: The pump moves 981,178.7343 l/d, roughly 981 kL each day.

This quick calculation helps engineers size storage tanks, schedule maintenance, or compare equipment efficiency.

Practical Applications

• Municipal water supply: Convert pump ratings to daily volumes for budgeting and demand forecasting.
• Agricultural irrigation: Translate flow‑rate specs of drip or sprinkler systems into daily water‑use figures.
• Industrial cooling: Estimate daily coolant consumption from pump capacities.
• Fire‑protection design: Verify that a sprinkler system can deliver the required daily volume during prolonged operation.

Gallon per Second to Litre per Day Conversion Table

Each row applies the same rule: multiply gallons per second by 327,059.5781.

Key Takeaway

One gallon per second equals roughly 327,060 litres per day. Multiply any gal/s value by this factor to get daily volume instantly.

Ready to apply these numbers to your project? Use the formula above, plug in your flow rate, and you’ll have accurate daily volumes in seconds.