Hose Volume Calculator
A garden or transfer hose is just a flexible pipe, and it is sized by its inside diameter. This hose volume calculator tells you how much water your hose holds in gallons or litres, how much that water weighs, and how long it takes to drain.
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| متى | ID | الطول | النتيجة |
|---|
Hose is sized by inside diameter. A common 5/8" garden hose is preset — change it to yours.
Hoses are sized by inside diameter
Unlike pipe, hose is labelled by its bore. A "5/8-inch garden hose" has a 5/8 in (0.625 in) inside diameter, so the volume calculation is direct — no schedule or wall lookup needed. Common household sizes are 1/2 in, 5/8 in and 3/4 in; the larger the bore, the more water the hose holds and the more it weighs when full.
How much water is in a garden hose?
A 50 ft, 5/8-inch hose holds about 0.8 US gallons — roughly 3 litres, weighing about 6.7 lb. Step up to a 100 ft, 3/4-inch hose and it holds about 2.3 gallons, close to 19 lb of water. That is why a long, full hose is heavy to drag and worth draining before you coil it. Enter your own length and bore above for the exact figures.
Handy things to know from hose volume
- Wasted water — the volume you flush before hot or clean water arrives.
- Weight when full — how heavy the hose is to move or hang.
- Drain and blow-out — what to clear before winter storage.
- Chemical and fertiliser mixing — line contents affect dosing through a hose-end feeder.
Drain and fill time for a hose
Enter a flow rate and the tool estimates how long the hose takes to fill or drain. For a trickle drain, that can be several minutes even on a short hose; at full tap flow, a hose fills in seconds. Knowing the volume turns "wait until it runs clear" into a number you can plan around.
Accuracy notes for hose
Hose bore can vary a little between products, and kinks or fittings reduce the effective volume slightly. For everyday use the nominal inside diameter is close enough. If you have measured the actual bore — or you are working with lay-flat or reinforced hose whose stated size differs from its bore — enter the measured inside diameter for the best result.
قراءة نتيجتك والثقة بها
The result above answers most questions; this note covers how to interpret it and its limits.
What the number actually means
The headline value is the internal capacity of a round, uniform pipe running full — the fluid the bore can hold along the length you entered. Every other unit on the panel is the same physical quantity re-expressed, so you can quote whichever your paperwork needs without recalculating.
افتراض الأنبوب الممتلئ
By default the figure assumes the pipe is completely full and perfectly cylindrical. For gravity drains and vented lines that run part full, set a fill level below 100% and the result scales with it. Bends, valves and fittings add a little capacity the straight-length model does not see — use the fittings allowance to approximate them.
جداول مرجعية للسعة ومثال محلول
Concrete numbers for this page, calculated the same way the tool above does — use them as a quick check or a lookup.
Water in a 3/4" hose by length
Hose is sized by its bore, not a schedule, so the maths is direct. A common 3/4" garden hose (0.75 in inside) holds surprisingly little — here is how the contents build up as the hose gets longer.
| الطول (ft) | Volume (US gal) | Per foot |
|---|---|---|
| 25 ft | 0.57 | 0.0229 |
| 50 ft | 1.15 | 0.0229 |
| 75 ft | 1.72 | 0.0229 |
| 100 ft | 2.29 | 0.0229 |
| 150 ft | 3.44 | 0.0229 |
| 200 ft | 4.59 | 0.0229 |
Capacity by hose bore
How much a 50 ft length holds across everyday hose sizes, in US gal. Doubling the inside diameter roughly quadruples the water sitting in the line — worth knowing before you drain or dose one.
| Inside diameter | Per foot (US gal) | Volume in 50 ft (US gal) |
|---|---|---|
| 1/4" | 0.0025 | 0.13 |
| 3/8" | 0.0057 | 0.29 |
| 1/2" | 0.0102 | 0.51 |
| 5/8" | 0.0159 | 0.80 |
| 3/4" | 0.0229 | 1.15 |
| 1" | 0.0408 | 2.04 |
Worked example
- Take a 5/8" hose, inside diameter 0.625 in, radius 0.3125 in.
- Area = π × 0.3125² = 0.3068 in².
- Over 100 ft (1,200 in): 0.3068 × 1,200 = 368.2 in³.
- That is 1.59 US gal of water held in a full 100 ft of 5/8" hose.
الأسئلة الشائعة
How much water does a garden hose hold?
A 50 ft, 5/8-inch hose holds about 0.8 US gallons (3 litres). A 100 ft, 3/4-inch hose holds about 2.3 gallons. Enter your length and bore above for an exact figure.
How do I calculate hose volume?
Hose is sized by its inside diameter, so use V = π × (ID/2)² × L directly. Enter the bore and length above.
How much does a full hose weigh?
Add the water weight (about 8.34 lb per US gallon) to the empty hose weight. The calculator shows the water weight for you.
Does hose diameter mean the inside or outside?
Hose sizes refer to the inside diameter (the bore), unlike pipe. Use that value directly.
Related pipe volume tools
What people say
Used the litres-per-metre figures to size a glycol charge for a radiant job. Numbers matched the datasheet.
Switches between US and metric without losing the pipe. Small thing, big time-saver.
Would love more HDPE DIPS sizes, otherwise excellent.