How we researched this guide
We read 3 hydraulic winch specification sources line by line: a Mile Marker HI9000 review with full imperial dimensions, a Ramsey industrial selection guide, and a Runva 20,000 lb hydraulic winch listing that mixes metric and imperial units.
We also checked drum capacity tables, which list cable diameter in inches against capacity in feet, because that table is where the two units meet and where most reading mistakes happen.
The 30-second answer
There is no product called hydraulic inches or feet. On a hydraulic winch spec sheet, inches measure cable diameter and drum size, and feet measure cable length and reach. The Mile Marker HI9000, for example, carries 3/8-inch by 100-foot cable on a drum 2.5 inches across and 9 inches long.
The units at a glance
| Measurement | Unit used | Example |
|---|---|---|
| Cable diameter | Inches | 3/8-inch cable |
| Cable length | Feet | 100 feet of cable |
| Drum diameter | Inches | 2.5-inch drum |
| Drum length | Inches | 9-inch drum |
| Drum capacity | Feet per diameter | See capacity table |
| Line pull layers | Feet of cable | 80 feet, 3 layers |
How to read a hydraulic winch spec sheet
Cable diameter is always inches
Steel winch cable is sized in inches: 5/16, 3/8, 1/2, 9/16 and up. The diameter sets the strength and how much cable the drum holds. A 3/8-inch cable is the common size on 9,000 to 12,000 lb hydraulic winches, and the Mile Marker HI9000 ships with 100 feet of it.
Cable length is always feet
Reach is given in feet, because that is the number that decides whether the winch reaches the anchor. One hundred feet is the common length on truck hydraulic winches. Industrial sheets may give the same length in metres: the Runva HWP20000YP lists 26.5 metres, which is the same idea in metric units.
Drum size is always inches
Barrel diameter, flange diameter and barrel length are given in inches on US sheets and millimetres on metric sheets. The HI9000 drum is 2.5 inches in diameter and 9 inches long. A wider drum holds more cable; a larger diameter drum pulls with less mechanical advantage on the outer layers.
Capacity tables mix both units on purpose
A drum capacity table lists cable diameter in inches down one side and capacity in feet across the top, because the two numbers answer different questions: how thick is the cable, and how much of it fits. Read the row for your diameter, not the biggest number on the table.
Line pull is rated on the first layer
Every hydraulic winch rating assumes the first layer of cable on the drum. As cable builds up, the effective drum diameter grows and the pull drops. Ramsey worked example puts 80 feet of 3/8-inch cable at three layers on an H-200, and the pull on that third layer is the number the application must satisfy.
Worked examples: real hydraulic winches
Worked example: Mile Marker HI9000
Why the Mile Marker HI9000 is our example
The HI9000 is rated to 9,000 lbs of line pull at 1,500 PSI, with a 14 cubic inch hydraulic motor, 100 feet of 3/8-inch galvanised aircraft-grade cable, a drum 2.5 inches in diameter and 9 inches long, and a 12-foot wired remote. Every measurement on its sheet follows the rule in this guide: diameter and drum in inches, length in feet.
Mile Marker HI9000: what owners report
Owner reviews of the HI9000 praise the long cable and the steady hydraulic pull, and note the weight: 97 lbs before mounting. The 100-foot cable is the feature owners mention most, because it reaches anchors a shorter cable cannot.
Worked example: Ramsey H-200 selection
Why the Ramsey H-200 is our example
The Ramsey industrial selection guide walks through a real sizing case: an application needing 5,000 lbs of line pull with 80 feet of 3/8-inch cable. On the H-200 that cable builds to three layers, and the winch gives 5,700 lbs on the third layer, so the selection works. The guide is the clearest proof that feet and inches answer different questions on one sheet.
Worked example: Runva HWP20000YP
Why the Runva HWP20000YP is our example
The Runva is a 20,000 lb commercial hydraulic winch with 12 mm by 26.5 m of steel cable, a drum of 127 mm by 266 mm, and a mounting bolt pattern in millimetres. It shows the metric version of the same rule: small dimensions in millimetres, long dimensions in metres, exactly as inches and feet work on US sheets.
Conversion table
| Convert | Multiply or divide | Example |
|---|---|---|
| Inches to feet | Divide by 12 | 100 ft = 1,200 in |
| Feet to inches | Multiply by 12 | 9 in = 0.75 ft |
| Millimetres to inches | Divide by 25.4 | 12 mm = 0.47 in |
| Metres to feet | Multiply by 3.281 | 26.5 m = 87 ft |
| Inches to millimetres | Multiply by 25.4 | 3/8 in = 9.5 mm |
Common reading mistakes
Comparing a diameter with a length: 3/8 inch and 100 feet are not comparable numbers. One is thickness, one is reach.
Using the biggest capacity number: drum capacity falls as cable diameter rises. Use the row for your cable, not the top of the table.
Forgetting the five wraps: the cable clamp will not hold the rated load. Five wraps must stay on the drum at full extension, on every winch in this guide.
Rating on the wrong layer: a winch rated on the first layer pulls less on the third. Check the layer your application actually uses.
Safety essentials
Unit mistakes cause rigging mistakes. Read the sheet twice and convert once.
- Never use a winch to lift people.
- Keep at least five wraps of cable on the drum.
- Check the layer the rating assumes before trusting it.
- Convert metric sheets to your units before comparing.
- Inspect cable for broken strands before every pull.
- Keep everyone clear of the cable line.
Troubleshooting
| Symptom | Cause | Fix |
|---|---|---|
| Cable will not reach | Length read as diameter | Check the feet figure, not the inches figure |
| Drum overfills | Cable thicker than the table row | Use the capacity row for your diameter |
| Pull feels weak | Working on an outer layer | Spool out to a lower layer or re-rig |
| Sheet numbers do not match | Mixed metric and imperial | Convert one sheet to the other units |
Who should NOT use this guide as a buying guide
Anyone shopping for a winch: this guide explains units, it does not rank winches. Use our winch size and hydraulic winch guides for the buying decision.
Anyone rigging a lift: winches in this guide are pulling winches, not lifting winches. Never lift people or suspended loads with them.
Final verdict
The rule: inches for diameter and drum size, feet for cable length and reach. Read the row, not the biggest number, and convert before comparing.
FAQ
What does hydraulic inches or feet mean?
It is not a product name. It is a units question: hydraulic winch specifications mix inches and feet, and the title asks which unit applies where. Cable diameter and drum size are given in inches; cable length and reach are given in feet. This guide reads a real spec sheet line by line so the units stop being confusing.
Is cable length measured in feet or inches?
Feet. A hydraulic winch cable is sold and listed by length in feet, such as 100 feet of 3/8-inch cable on the Mile Marker HI9000. Inches describe the cable diameter, not its length. A listing that gives cable size in inches alone is giving you the diameter.
What is cable diameter measured in?
Inches, for steel cable: 5/16, 3/8, 1/2 and larger, in sixteenths of an inch. Synthetic rope is often listed in millimetres as well, so a drum sheet may show both. The diameter sets the breaking strength and the drum capacity, so it matters more than it looks.
How do drum dimensions use inches?
Drum barrel diameter, flange diameter and barrel length are all given in inches. The Mile Marker HI9000 drum is 2.5 inches in diameter and 9 inches long. Industrial sheets add the same figures in millimetres. A bigger drum holds more cable but pulls slower on the outer layers.
How many feet of cable fits on a drum?
It depends on the drum and the cable diameter together. A drum capacity table lists cable diameter in inches against capacity in feet: thinner cable gives more feet, thicker cable gives fewer. Always leave at least five wraps of cable on the drum, because the clamp alone will not hold the rated load.
Why do some winch sheets use metres?
Industrial and Australian makers list cable in metres and drum sizes in millimetres, while US makers list feet and inches. The Runva HWP20000YP, for example, lists 12 mm by 26.5 m of cable. Convert before comparing two winches, or you will compare a length against a diameter by mistake.
Does line pull change with cable layers?
Yes. A winch is rated on the first layer of cable on the drum, and the pull drops as layers build up. Ramsey selection guidance works this out explicitly: 80 feet of 3/8-inch cable builds to three layers on an H-200, and the rated pull on the third layer is what the application must be checked against.
How do I convert inches to feet?
Divide inches by 12. A 100-foot cable is 1,200 inches long; a 9-inch drum is 0.75 feet long. For millimetres, divide by 25.4 to get inches. Keep one unit per measurement when you compare winches, and convert the other sheet to match.
Sources
- Offroaders.com — Mile Marker HI9000 Hydraulic Winch reviews and specifications
- Ramsey — Industrial Selection Guide (hydraulic winch sizing)
- Runva — HWP20000YP Hydraulic Winch with Steel Cable
By Leo, Founder, WinchInsider
Leo covers winches, recovery gear and the workshop tools around them, working from maker documentation and owner reports rather than test claims.
Related guides
- Does a Hydraulic Winch Work?
- Mile Marker Hydraulic Winch Review
- What Size Winch Do I Need?
- How to Replace Winch Cable
- Best Synthetic Winch Rope Replacement
- How to Respool Winch Cable
The rule: inches for diameter and drum size, feet for cable length and reach.