One acre-foot per day is exactly 51,395.07656 liters per hour, so converting acre-feet per day to liters per hour is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The rating unit for dosing pumps, drip irrigation and small boilers. Irrigation and reservoir release rates in the western United States.
Standard versus actual volume. Gas flow in CFM depends on pressure and temperature, which is why compressor ratings say SCFM and specify the reference conditions. Converting the number is exact; comparing two ratings measured at different conditions is not. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in liters per hour, so you can sanity-check whether your answer is a plausible size.
The formula
acre-feet per day- The amount you are converting, in acre-feet per day
51,395.0765628- The exact number of liters per hour in one acre-foot per day
liters per hour- The converted result
How it works, step by step
- Enter the value in acre-feet per day.
- It is multiplied by 51,395.0765628, the exact factor between the two units.
- The answer is shown in liters per hour, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A garden hose: 0.021 ac ft/d in liters per hour
Take a garden hose, roughly 0.021 ac ft/d. The conversion is a single multiplication — 0.021 × 51,395.1 — giving 1079.3 L/h. Because the relationship is proportional, doubling the input doubles the answer to 2158.59 L/h.
A fire hydrant: 4.2 ac ft/d in liters per hour
Take a fire hydrant, roughly 4.2 ac ft/d. The conversion is a single multiplication — 4.2 × 51,395.1 — giving 215,859 L/h. Because the relationship is proportional, doubling the input doubles the answer to 431,719 L/h.
How to read your score
Frequently asked questions
How many liters per hour are in one acre-foot per day?
Exactly 51,395.0765628. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert acre-feet per day to liters per hour?
liters per hour = acre-feet per day × 51,395.0765628. Reversed, acre-feet per day = liters per hour ÷ 51,395.0765628, which is the same as multiplying by 1.94571166516e-05.
Which is the bigger unit, the acre-foot per day or the liter per hour?
The acre-foot per day. One acre-foot per day equals 51,395.1 liters per hour.
What does this quantity actually measure?
Both units measure volumetric flow. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a acre-foot per day?
Irrigation and reservoir release rates in the western United States.
What is a liter per hour?
The rating unit for dosing pumps, drip irrigation and small boilers.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do ac ft/d to L/h in my head?
Plenty of people do this in their head: multiply by 50,000 instead of using the exact factor 51,395.07656. At 100 that shortcut gives 5,000,000 liters per hour, off by 139507.656282 liters per hour or about 2.71%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Acre-Feet Per Day to liters per hour reference tables
| Acre-Feet Per Day | Liters Per Hour |
|---|---|
| 0.5 ac ft/d | 25,697.5 L/h |
| 1 ac ft/d | 51,395.1 L/h |
| 2 ac ft/d | 102,790 L/h |
| 3 ac ft/d | 154,185 L/h |
| 5 ac ft/d | 256,975 L/h |
| 10 ac ft/d | 513,951 L/h |
| 20 ac ft/d | 1.0279e+06 L/h |
| 25 ac ft/d | 1.28488e+06 L/h |
| 50 ac ft/d | 2.56975e+06 L/h |
| 75 ac ft/d | 3.85463e+06 L/h |
| 100 ac ft/d | 5.13951e+06 L/h |
| 250 ac ft/d | 1.28488e+07 L/h |
| 500 ac ft/d | 2.56975e+07 L/h |
| 1000 ac ft/d | 5.13951e+07 L/h |
| 5000 ac ft/d | 2.56975e+08 L/h |
Exact factor: 1 acre-foot per day = 51,395.0765628 liters per hour.
| Quantity | ac ft/d | L/h |
|---|---|---|
| A dripping tap | 7.005e-06 ac ft/d | 0.36 L/h |
| A bathroom tap | 0.007005 ac ft/d | 360 L/h |
| A shower head | 0.01121 ac ft/d | 576 L/h |
| A garden hose | 0.02101 ac ft/d | 1080 L/h |
| A fire hydrant | 4.203 ac ft/d | 2.16e+05 L/h |
| The Thames at London | 4553 ac ft/d | 2.34e+08 L/h |
Published reference values, converted with the same factor this page uses.