Caleb MorganBy Caleb Morgan

Updated November 2026

A standard garden hose size fitting in the United States is the 3/4-inch garden hose thread, usually called GHT. Once you know how to recognize it, you can measure your hose, check your spigot, and buy a replacement end or adapter that threads on without leaks. This guide shows you how to confirm the size and avoid buying the wrong part.

What the Standard Garden Hose Fitting Size Actually Is

The standard garden hose fitting size is 3/4 inch, measured across the outside of the male thread. The thread pitch is 11.5 threads per inch, which is why a fitting that looks similar but has a different pitch will feel gritty or refuse to seat. Most North American hose bibs, spigots, sprinklers, nozzles, and hose reels use this same GHT standard, so one fitting type usually connects to the rest of your setup.

Shopping for one? See our guide: Replace End of Garden Hose: 6 Best Repair Fittings Compared (2026).

Keep in mind that the hose’s inside diameter is a separate measurement. A 5/8-inch hose and a 1/2-inch hose can both use a 3/4-inch GHT end. Do not confuse the two when you shop.

How to Measure and Confirm Your Fitting

You can confirm the size with a few quick checks before buying anything. For a deeper look, Raised Garden Beds: Sizes, Materials and Setup covers this in detail.

  1. Unscrew the female coupling from the hose end, or look at the existing fitting on your spigot.
  2. Measure the outside diameter of the male thread with a caliper or a ruler. A 3/4-inch GHT thread measures about 0.94 inch (roughly 24 mm) across the outer crests.
  3. Count the threads over one inch. Standard GHT shows about 11 to 12 threads per inch.
  4. Check the face of the fitting. Standard GHT ends have a flat rubber washer seat and a hexagonal or knurled collar.
  5. If the fitting is damaged, compare it against a known-good fitting or a labeled replacement before ordering.

Matching Standard Hose Fittings to Your Setup

Once you confirm the 3/4-inch GHT size, match the rest of your system. The table below covers the most common situations.

What you’re connecting What to look for
Hose end to hose Female 3/4-inch GHT on the replacement end
Hose to spigot Male or female GHT that matches the hose coupling
Hose to pipe thread GHT-to-pipe adapter (usually 1/2-inch or 3/4-inch NPT)
Hose to sprinkler or nozzle Same GHT size, male or female as needed

If you need to join a hose to plumbing rather than a spigot, a standard garden hose to pipe fitting is the right tool. For a full walkthrough, see Garden Hose to Pipe Fittings: A Step-by-Step Guide to Connecting Them Right.

Replacing a Damaged Hose End

When a hose end cracks or leaks, a repair end is usually the cheapest fix. Cut the damaged section back until the hose is clean and round, then insert the barb into the bore and clamp it. Many people compare options in 6 Best Garden Hose and Fittings for Easy Repairs and Connections (2026) before committing. Choose an end rated for the hose’s inside diameter, or the connection may slip off under pressure.

Also consider the seal. A rubber washer that is cracked or flattened causes more leaks than a bad thread does. Replace it whenever you disconnect the fitting. For washer selection, see Washers for Garden Hose: 7 Best Picks Compared (2026).

  • Digital or dial caliper: Gives an accurate outside-diameter reading so you can confirm 3/4-inch GHT without guessing. View on Amazon
  • Replacement rubber hose washers: Restore a tight seal at the spigot and nozzle joints. View on Amazon
  • Brass GHT-to-pipe adapter: Connects a standard hose to threaded plumbing when a direct fit is not possible. View on Amazon

Common Mistakes

  • Measuring the hose’s inside diameter instead of the fitting’s outside thread.
  • Assuming all “garden hose” threads are interchangeable. Some imported fittings use different pitches.
  • Forgetting the rubber washer, which causes leaks even with a perfect thread match.
  • Overtightening plastic fittings, which can crack the collar.
  • Mixing GHT with NPT threads, which looks similar but will not seal properly.

FAQ

What size is a standard garden hose fitting?

A standard garden hose fitting is 3/4-inch GHT (garden hose thread), with about 11.5 threads per inch. This is the common size across most US spigots and hose ends.

Is a 5/8-inch hose the same size as a 3/4-inch fitting?

No. The 5/8 refers to the hose’s inside diameter, while 3/4 refers to the fitting thread. A 5/8-inch hose commonly uses a 3/4-inch GHT end.

Can I use a garden hose fitting on plumbing pipe?

Not directly. You need a GHT-to-pipe adapter that matches your pipe’s thread type, usually 1/2-inch or 3/4-inch NPT. Check the adapter’s labeling before installing it.

Conclusion

The standard garden hose size fitting is 3/4-inch GHT, and confirming it takes only a caliper and a thread count. Measure the outside of the male thread, check the washer seat, and match the fitting to your spigot or pipe. Getting the size right the first time saves you from leaks and extra trips to the store.

Ready to choose one?

Caleb Morgan

About Caleb Morgan

Caleb Morgan is part of our editorial team and reviews and edits our garden hand tools & equipment guides, checking product details against manufacturer specifications and owner feedback.