L/min
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Equivalent flow rate
Accurate conversion between Litres per Hour (L/hr) and Litres per Minute (L/min)
Convert Litres per Hour to Litres per Minute instantly with precise calculations. Includes reverse L/min to L/hr conversion, full formula reference, real-world flow rate examples, and L/hr to L/min conversion tables for 2026.
Professional flow rate conversion for irrigation, plumbing, industrial pumps, water treatment, and HVAC systems
Convert Litres per Hour to Litres per Minute using the exact relationship between hours and minutes: 1 hour = 60 minutes exactly. Therefore L/min = L/hr ÷ 60. This is a perfect, lossless conversion — no approximation required at any precision level. Our tool delivers instant results for any flow rate from a drip emitter at 2 L/hr through to large industrial pumps at 100,000 L/hr.
Switch between L/hr to L/min and L/min to L/hr conversion in one click. Whether you are converting an irrigation drip emitter rated in L/hr to L/min for a pump sizing calculation, cross-referencing a boiler flow rate from L/min to L/hr for a daily consumption report, or checking a flow meter reading against a tank fill time — both directions are handled instantly.
Essential for irrigation system design (drip emitters are rated in L/hr), industrial process engineering (pumps often rated in L/min), boiler and hot water system sizing, pool and spa flow calculations, water treatment plant operations, chemical dosing systems, fuel consumption monitoring, and plumbing compliance in 2026. Both L/hr and L/min appear across Australian Standards, manufacturer datasheets, and engineering specifications.
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Litres per hour (L/hr) is a metric unit of volumetric flow rate expressing the volume of fluid that passes a given point in one hour. It is the standard unit for specifying drip irrigation emitters, hot water system flow rates, boiler output, chemical dosing pumps, fuel consumption in diesel generators, and low-flow water applications. Because one hour is a natural timeframe for consumption and billing calculations, L/hr is widely used in agriculture, building services, and water management across Australia, Europe, and Asia in 2026.
Its closely related counterpart, Litres per minute (L/min), is preferred for faster-flowing applications such as tap and shower output, pump performance curves, fire suppression systems, and hydraulic equipment. Since 1 hour = 60 minutes exactly, converting between the two units is straightforward division or multiplication by 60. You can explore more unit converters at the ConcreticMetric converter hub.
The conversion between L/hr and L/min is based on the exact definition of time: 1 hour = 60 minutes exactly. This makes it a perfectly exact conversion — there is no approximation involved at any level of precision.
Example: 450 L/hr ÷ 60 = 7.5 L/min
Example: 12.5 L/min × 60 = 750 L/hr
Bar heights represent approximate relative flow rates from drip irrigation emitter to large industrial pump
The reference table below covers the most commonly needed L/hr to L/min conversions, from micro drip irrigation emitters through to large commercial and industrial pumping systems.
| Litres/hr (L/hr) | Litres/min (L/min) | Litres/sec (L/s) | Real-World Reference |
|---|---|---|---|
| 1 L/hr | 0.01667 L/min | 0.000278 L/s | Very slow drip / micro emitter |
| 2 L/hr | 0.03333 L/min | 0.000556 L/s | Standard drip irrigation emitter |
| 4 L/hr | 0.06667 L/min | 0.001111 L/s | High-flow drip emitter / tree watering |
| 6 L/hr | 0.10000 L/min | 0.001667 L/s | Subsurface drip tape |
| 10 L/hr | 0.16667 L/min | 0.002778 L/s | Micro sprinkler (garden bed) |
| 30 L/hr | 0.50000 L/min | 0.008333 L/s | Small chemical dosing pump |
| 60 L/hr | 1.00000 L/min | 0.016667 L/s | Medical gas / low-flow tap |
| 120 L/hr | 2.00000 L/min | 0.033333 L/s | Water-efficient tap (WELS 6-star) |
| 240 L/hr | 4.00000 L/min | 0.066667 L/s | WELS-rated tap (4 L/min) |
| 360 L/hr | 6.00000 L/min | 0.100000 L/s | Efficient shower head (6 L/min) |
| 540 L/hr | 9.00000 L/min | 0.150000 L/s | Average Australian shower |
| 600 L/hr | 10.00000 L/min | 0.166667 L/s | Household bath tap |
| 900 L/hr | 15.00000 L/min | 0.250000 L/s | Garden hose nozzle |
| 1,200 L/hr | 20.00000 L/min | 0.333333 L/s | Irrigation zone / small pump |
| 3,000 L/hr | 50.00000 L/min | 0.833333 L/s | Small centrifugal pump |
| 6,000 L/hr | 100.00000 L/min | 1.666667 L/s | Commercial irrigation pump |
| 12,000 L/hr | 200.00000 L/min | 3.333333 L/s | Swimming pool circulation pump |
| 30,000 L/hr | 500.00000 L/min | 8.333333 L/s | Large industrial cooling system |
| 60,000 L/hr | 1,000.00000 L/min | 16.666667 L/s | Municipal / fire supply pump |
The L/hr to L/min conversion is one of the simplest in flow rate measurement — it only involves dividing or multiplying by 60. Here is the full step-by-step method:
All drip irrigation emitters, drip tape, and micro-sprinklers are rated in L/hr as the industry standard worldwide. A typical dripper for a vegetable garden is 2 L/hr; for a mature tree, 4–8 L/hr. When sizing an irrigation pump, you must convert the total emitter flow (L/hr) to L/min to match the pump performance curve — e.g., 200 emitters × 4 L/hr = 800 L/hr = 13.33 L/min required pump flow.
Australia's WELS (Water Efficiency Labelling and Standards) scheme rates showers and taps in L/min, while irrigation equipment is rated in L/hr. A 3-star WELS showerhead flows at 6–7 L/min (360–420 L/hr). This mixed use of L/min and L/hr in different product categories makes the L/hr to L/min converter one of the most practically useful tools for Australian plumbers, landscapers, and water-efficiency consultants.
Gas continuous flow (instantaneous) hot water heaters are rated in litres per minute for their hot water delivery rate — typically 16–26 L/min (960–1,560 L/hr) for residential units. Storage hot water systems are characterised by tank capacity (litres) and recovery rate (L/hr). Converting between L/hr and L/min is essential when comparing continuous flow heaters with storage systems, or when sizing solar hot water collectors and their associated circulation pumps.
Industrial pump performance curves typically plot flow in L/min, L/s, or m³/hr on the horizontal axis against head (metres) on the vertical axis. When a system specifies daily throughput in L/hr (e.g., 36,000 L/hr), converting to L/min (600 L/min) or m³/hr (36 m³/hr) allows direct reading from a standard pump performance curve. Always confirm the time base before selecting a pump from a catalogue.
Diesel generator fuel consumption is published in L/hr at various load percentages. A 100 kVA generator typically consumes 10–25 L/hr depending on load. To estimate fuel tank runtime: Runtime (hours) = Tank capacity ÷ Consumption rate (L/hr). To convert fuel consumption to L/min for a fuel flow meter calibration: 20 L/hr ÷ 60 = 0.333 L/min — a low flow rate requiring a precision flow sensor.
Chemical dosing pumps in water treatment, pool management, and industrial processes are specified in L/hr or mL/min. A typical pool chlorine dosing pump delivers 0.5–5 L/hr (8.3–83.3 mL/min). When calibrating a dosing pump against a flow meter, converting L/hr to L/min (÷ 60) or mL/min (÷ 0.06) gives the expected meter reading. Precision dosing applications may use mL/hr — divide by 60,000 to get L/min.
L/min = L/hr ÷ 60 | L/hr = L/min × 60
L/sec = L/hr ÷ 3,600 | m³/hr = L/hr ÷ 1,000
The factor is always exactly 60 — no approximation needed.
A drip irrigation system has 150 emitters at 4 L/hr and 80 emitters at 2 L/hr.
Total flow = (150 × 4) + (80 × 2) = 600 + 160 = 760 L/hr
Convert to L/min: 760 ÷ 60 = 12.67 L/min
Select a pump delivering at least 13 L/min at the system's operating head pressure — with a 10% safety margin applied.
It is common in Australian engineering and irrigation documents to find drip emitters rated in L/hr, pumps rated in L/min, and large plant rated in m³/hr — all within the same project specification. Always convert all flow rates to a single unit before summing demands or selecting equipment. Failing to convert L/hr to L/min before comparing with a pump curve is one of the most common causes of undersized irrigation and plumbing pumps in small commercial projects.
The Australian Government's Water Efficiency Labelling and Standards (WELS) scheme rates taps and showers in L/min under AS 6400 test standards. It is the definitive reference for water-efficient product flow rate specifications in Australia in 2026, helping consumers and engineers compare L/min ratings across all WELS-registered products.
Visit WELS →Irrigation Australia Ltd is the peak body for the irrigation industry, providing technical standards for drip emitter specifications (L/hr), system design guidelines, and flow rate conversion references used across agricultural, horticultural, and landscape irrigation in Australia. Their resources cover emitter ratings, pipe sizing, and pump selection in both L/hr and L/min units.
Visit Irrigation Australia →ConcreticMetric offers free converters for flow rate, volume, pressure, power, force, speed, length, area, energy, and more. All tools are mobile-friendly, free, and built for precision in 2026 — with instant results, full formula references, and real-world worked examples for every conversion type.
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