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Gallons (uk)/hour to Liters/second Converter (gal (UK)/h to L/s)

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Live Conversion • ISO 80000-4:2019 Certified
1 Gallon (UK)/hour = 0.0012628028 Liter/second
1 gal (UK)/h = 0.0012628 L/s • 1 L/s = 791.889294 gal (UK)/h
Gallon (UK)/hour to Liter/second: One Gallon (UK)/hour is equal to 0.0012628028 Liters/second.
Certified Authority Value
0.00126280
L/s
Exact: 1 L/s ≡ 791.8892938767 gal (UK)/h
gal (UK)/h
gal (UK)/h
Swap to Liter/second to Gallon (UK)/hour
Swap to Liter/second to Gallon (UK)/hour
L/s
L/s 0.0012628028
Quick Values:
Conversion Formula
To convert Gallon (UK)/hour to Liter/second, multiply by 0.0012628028
gal (UK)/h × 0.0012628028 = L/s

Calculation: 1 gal (UK)/h × 0.0012628028 = 0.0012628028 L/s

Common Gallon (UK)/hour to Liter/second Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Gallon (UK)/hour (gal (UK)/h) and Liter/second (L/s).

Tap any row to calculate
Gallon (UK)/hour to Liter/second: Primary Direct Table (15 Steps)
Gallon (UK)/hour to Liter/second Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 gal (UK)/h 1.262803 × 10⁻⁶ L/s 1.263 × 10⁻⁶
0.01 gal (UK)/h 1.262803 × 10⁻⁵ L/s 1.263 × 10⁻⁵
0.1 gal (UK)/h 0.00012628 L/s 1.263 × 10⁻⁴
0.5 gal (UK)/h 0.000631401 L/s 6.314 × 10⁻⁴
1 gal (UK)/h 0.0012628 L/s 1.263 × 10⁻³
2 gal (UK)/h 0.00252561 L/s 2.526 × 10⁻³
5 gal (UK)/h 0.00631401 L/s 6.314 × 10⁻³
10 gal (UK)/h 0.012628 L/s 1.263 × 10⁻²
20 gal (UK)/h 0.0252561 L/s 2.526 × 10⁻²
25 gal (UK)/h 0.0315701 L/s 3.157 × 10⁻²
50 gal (UK)/h 0.0631401 L/s 6.314 × 10⁻²
100 gal (UK)/h 0.12628 L/s 1.263 × 10⁻¹
250 gal (UK)/h 0.315701 L/s 3.157 × 10⁻¹
500 gal (UK)/h 0.631401 L/s 6.314 × 10⁻¹
1000 gal (UK)/h 1.262803 L/s 1.263 × 10⁰
Liter/second to Gallon (UK)/hour: Reciprocal Summary
Liter/second to Gallon (UK)/hour Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 L/s 791.889294 gal (UK)/h 7.919 × 10²
5 L/s 3959.446469 gal (UK)/h 3.959 × 10³
10 L/s 7918.892939 gal (UK)/h 7.919 × 10³
50 L/s 39594.464694 gal (UK)/h 3.959 × 10⁴
100 L/s 79188.929388 gal (UK)/h 7.919 × 10⁴
View Complete 15-Row Liter/second to Gallon (UK)/hour Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Gallon (UK)/hour (gal (UK)/h) and Liter/second (L/s):

Gallon (UK)/hour References:

  • British commercial canal narrowboat diesel engine cruising fuel burn rate 0.4 gal/h (UK)

Liter/second References:

  • Standard residential outdoor garden watering hose discharge rate 0.5 L/s
  • Municipal fire engine attack hose line water discharge delivery rate 15 L/s

Tap any benchmark above to automatically calculate its exact equivalent in Liter/second.

ISQ Dimension: [L³ T⁻¹] Coherent SI Unit: cubic meter per second (m³/s) Fluid Dynamics & Rheology

How to Convert Gallon (UK)/hour to Liter/second

Converting Gallon (UK)/hour (gal (UK)/h) to Liter/second (L/s) is a core calculation in Volumetric Flow Rate, which quantifies the volume of fluid passing through a designated conduit cross-section per unit of time. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Gallon (UK)/hour equals 0.0012628 Liter/second, while 1 L/s equals 791.889294 gal (UK)/h.

Direct Factor1 gal (UK)/h = 0.0012628 L/s
Inverse Ratio1 L/s = 791.889294 gal (UK)/h
Conversion ScaleMetric SI to British Imperial / US Customary Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (cubic meter per second (m³/s)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 gal (UK)/h = 1.262803 × 10⁻⁶ cubic meter per second (m³/s)
2. Target SI Bridge (ktarget):1 L/s = 0.001 cubic meter per second (m³/s)
Step-by-step substitution for Gallon (UK)/hour → Liter/second:V(L/s) = V(gal (UK)/h) × ( 1.262803 × 10⁻⁶ / 0.001 ) = V(gal (UK)/h) × 0.0012628
Mathematical FormulaValue in Liter/second = Value in Gallon (UK)/hour × 0.0012628028Direct computational formula applied for standard conversion.
Worked Example

Converting 15 gal (UK)/h yields an exact output of 0.018942 L/s in Liter/second. Under higher industrial throughput, 480 gal (UK)/h translates to 0.606145 L/s.

Inverse check: 1 L/s = 791.889294 gal (UK)/h.

Understanding Gallon (UK)/hour and Liter/second

Gallon (UK)/hour

gal (UK)/h
Imperial / US

A Gallon (UK)/hour (gal (UK)/h) is an imperial and US customary unit for volumetric flow rate.

Applications & Practical Context

In practical flow terms, a British commercial canal narrowboat diesel engine cruising fuel burn rate equals 0.4 gal/h (UK).

Physical Setup

A physical magnitude of 1 gal (UK)/h corresponds to 1.262803 × 10⁻⁶ m³/s in standard SI measurement.

Conversion to SI Unit: cubic meter per second (m³/s)
1 gal (UK)/h = 1.262803 × 10⁻⁶ m³/s

Liter/second

L/s
Standard Unit

A Liter/second (L/s) is a recognized unit for volumetric flow rate.

Applications & Practical Context

In practical flow terms, a standard residential outdoor garden watering hose discharge rate equals 0.5 L/s, a municipal fire engine attack hose line water discharge delivery rate equals 15 L/s.

Physical Setup

A physical magnitude of 1 L/s corresponds to 0.001 m³/s in standard SI measurement.

Conversion to SI Unit: cubic meter per second (m³/s)
1 L/s = 0.001 m³/s

Domain Metrology & Engineering Applications

Governing Law & Equation

Hydrodynamic Continuity Equation (Q = A · v̄)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using electromagnetic inductive flowmeters, ultrasonic transit-time meters, turbine flowmeters, and differential orifice plates.

Primary Industry Sectors

Applied across municipal water supply distribution, chemical process loops, oil & gas pipeline custody transfer, and HVAC hydronic balancing under international metrology standard ISO 80000-4:2019, ASME MFC-3M.

Physical Orders of Magnitude & Laboratory Reference Benchmarks

Physical Phenomenon / Engineering ReferenceReference ValueConverted to Liter/second
British commercial canal narrowboat diesel engine cruising fuel burn rate0.4 gal/h (UK)0.000505121 L/s
Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-4:2019, ASME MFC-3M and the BIPM SI Brochure (9th Edition). Governed by Hydrodynamic Continuity Equation (Q = A · v̄) under ISO 80000 dimensional vector [L³ T⁻¹].

Multi-Variable Engineering Bridge Fluid Continuity & Mass Flux

Volumetric to Mass Flow Continuity Bridge (kg/s • kg/h • lb/s • lb/h • t/h • g/s)

Convert volumetric flow rate (Q) directly into physical mass flow rate (ṁ) across process fluids using the continuity relation ṁ = ρ × Q, bridging volume flow [L³ T⁻¹] and mass flow [M T⁻¹] via density (ρ).

ṁ = ρ × Q
Vector: [m³/s] × [kg/m³] → [kg/s]
Live Calculated Bridge Equivalent:
1 gal (UK)/h at Water (20°C / Standard Ambient) = 0.001261 kg/s
Equals 4.5379 kg/h • 0.002779 lb/s • 10 lb/h
SI Mass Flow
0.001261
kg/s
Kilograms per Second
Industrial Process
4.5379
kg/h
Kilograms per Hour
US Mass Flow
0.002779
lb/s
Pounds per Second
Boiler / Turbine Rating
10
lb/h
Pounds per Hour
Heavy Plant Header
0.004538
t/h
Metric Tons per Hour
Chemical / Laboratory
1.2605
g/s
Grams per Second
  1. 1. Normalize Input to SI Base Unit (m³/s):
    Q = 1 gal (UK)/h × 1.26280278 × 10⁻⁶ = 1.26280278 × 10⁻⁶ m³/s
  2. 2. Apply Engineering Parameter (ρ):
    Selected condition: Water (20°C / Standard Ambient) at ρ = 998.2 kg/m³
  3. 3. Execute Governing Physical Law in SI Units:
    ṁ = ρ × Q = (1.26280278 × 10⁻⁶ m³/s) × (998.2 kg/m³) = 0.00126053 kg/s
  4. 4. Convert to Standard Engineering Units:
    • kg/s: 0.00126053 × 1 = 0.001261 kg/s (Kilograms per Second) • kg/h: 0.00126053 × 3600 = 4.5379 kg/h (Kilograms per Hour) • lb/s: 0.00126053 × 2.2046 = 0.002779 lb/s (Pounds per Second) • lb/h: 0.00126053 × 7936.6414 = 10 lb/h (Pounds per Hour) • t/h: 0.00126053 × 3.6 = 0.004538 t/h (Metric Tons per Hour) • g/s: 0.00126053 × 1000 = 1.2605 g/s (Grams per Second)
Explore Full Density Converter →
Engineering Substance / Operating Standard Parameter Value (kg/m³) Reference State / Condition Typical Industrial & Engineering Application
Water (20°C / Standard Ambient) 998.2 998.2 kg/m³ HVAC hydronic & cooling water
Diesel Fuel (EN 590 / 20°C) 832 832.0 kg/m³ Generator & marine diesel consumption
Gasoline / Petrol (15°C) 740 740.0 kg/m³ Automotive fuel injection lines
Hydraulic Fluid (ISO VG 46) 870 870.0 kg/m³ Hydraulic power pack pumps
Air (Standard Ambient / NTP 20°C) 1.204 1.204 kg/m³ HVAC ductwork & compressor air
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Frequently Asked Questions

There are exactly 0.0012628028 liters/second (L/s) in 1 gallon (uk)/hour (gal (UK)/h). To calculate larger amounts manually, simply multiply your total number of gallons (uk)/hour by the conversion multiplier of 0.0012628028.

The mathematical formula to convert gallons (uk)/hour to liters/second is: [value] * 0.0012628028 = liters/second. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from liters/second back to gallons (uk)/hour, you must divide your starting value by 0.0012628028. Our bidirectional tool automatically computes this inverse equation the moment you type into the liter/second input field.

1 Liter/second is larger than 1 Gallon (UK)/hour. Specifically, 1 Gallon (UK)/hour equals 0.0012628028 liters/second, meaning 1 Liter/second is 791.8893 times larger than 1 Gallon (UK)/hour (a difference of 2.90 orders of magnitude). Expressing measurements in gallons (uk)/hour requires a larger numerical value to represent the equivalent physical magnitude.

A typical British commercial canal narrowboat diesel engine cruising fuel burn rate measures 0.4 gal/h (UK), which corresponds to 0.0005051 Liter Per Second (Liter/second).

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