Before you fall for a faucet, your sink has already made one decision for you: how many holes it has. This guide shows you how to count and measure them, what 1-hole and 3-hole really mean, and exactly which faucet from Bathify fits your setup.
Most US bathroom sinks use either 1 hole or 3 holes. A single-hole (1-hole) faucet installs through one opening with the spout and handle on a single body. A 3-hole faucet installs through three openings - as a centerset (parts on a 4-inch base plate) or a widespread (three separate pieces spaced 8 inches or more apart). Two-hole bathroom sinks exist but are uncommon in the US market.
Here's the part that trips most people up: your sink decides your faucet, not the other way around. The number and spacing of the holes already drilled into your sink or countertop set which faucets will physically fit. So at Bathify, the first thing we tell customers is to count and measure the existing holes before adding anything to the cart. If you want a quick primer on the three faucet styles themselves, our single-hole vs centerset vs widespread faucet guide breaks each one down, and this guide focuses specifically on the hole-count decision.
Count the holes in your sink deck, then measure center-to-center between the two outer holes. One hole = single-hole faucet. Three holes about 4 inches apart = centerset. Three holes about 8 inches apart = widespread. That single measurement decides 90% of your faucet choice before style, finish, or brand ever enters the picture.
A bathroom faucet is one of the few fixtures where the wrong purchase can be impossible to install - not difficult, impossible - because the mounting holes are fixed before you ever shop. A gorgeous 8-inch widespread faucet simply cannot mount on a sink drilled with one hole, and a single-hole faucet leaves two holes gaping on a widespread-drilled sink unless you cover them. This is why hole configuration is the specification Bathify puts ahead of finish, style, and even brand.
In practice, a faucet (or "tap," the valve that controls the flow of water and, in a mixer design, blends hot and cold before it reaches the spout, as described in this overview of taps and mixer taps) has to line up exactly with the openings in your sink deck or countertop. Get the hole count and spacing right and installation is a 30-minute job. Get it wrong and you're either returning the faucet or drilling holes into porcelain - which our team at Bathify never recommends homeowners attempt on a finished sink.
Across the hundreds of bathroom sink faucets we carry at Bathify, single-hole and 3-hole widespread models make up the large majority of what we stock, which closely mirrors how US bathrooms are actually drilled today. That's the practical reason this guide spends most of its time on the 1-hole versus 3-hole question - it's the decision that matters for almost everyone.
There are really only four hole configurations you'll meet on a US bathroom sink - and two of them do almost all the work. Here's what each one means and which faucet it accepts.
A single-hole faucet mounts through one opening, combining the spout and a single lever (or two compact handles) on one base. The cleanest, most contemporary look and the easiest to install. At Bathify, this is the configuration we carry most deeply.
Three holes with the outer two spaced 4 inches apart. A centerset puts the spout and both handles on a single connected base plate that hides all three holes. The go-to for standard, compact, and builder vanities.
Three holes with the outer two spaced 8 to 16 inches apart. A widespread faucet is three fully separate pieces - spout plus two independent handles - for a custom, upscale appearance on larger vanities.
Some vessel sinks and designer basins ship with no deck holes at all. These pair with a wall-mount faucet (plumbed through the wall) or a tall single-hole vessel faucet mounted in a hole drilled into the countertop behind the basin.
If your sink or countertop is still undrilled - a new vessel sink, a fresh stone countertop, or a renovation where you control the drilling - then you genuinely get to choose between a 1-hole and a 3-hole setup. This is where style and practicality actually come into play. Here's how the two stack up, the way we'd walk a customer through it at Bathify.
| Factor | 1-Hole (Single-Hole) | 3-Hole (Centerset / Widespread) |
|---|---|---|
| Holes required | 1 | 3 |
| Look | Minimal, modern, uncluttered deck | Classic (centerset) to custom/luxury (widespread) |
| Handles | Usually one lever (mix temp in one motion) | Two handles (separate hot & cold) |
| Install difficulty | Easiest | Centerset Easy · Widespread Moderate |
| Cleaning | Fewest seams to wipe around | More gaps between pieces (esp. widespread) |
| Best vanity size | Small to mid; vessel sinks | Centerset: compact · Widespread: 30"+ wide |
| Fits a 3-hole sink? | Yes, with a deck plate | Yes (matched spread) |
| Typical price at Bathify | From ~$100 to $775+ | From ~$85 (centerset) to $1,000+ (widespread) |
When Bathify recommends a 1-hole faucet
At Bathify, we recommend a single-hole faucet for most modern and transitional bathrooms, small vanities, powder rooms, and any vessel sink setup. The single-lever design is faster to use, easier to clean around, and the simplest install we sell - which is exactly why single-hole models are the deepest part of our sink-faucet range. One-lever temperature control is also the more intuitive everyday experience for most households.
When Bathify recommends a 3-hole faucet
Our team suggests a 3-hole faucet when your sink is already drilled for three holes, when you want separate hot and cold handles, or when you're after a specific aesthetic - a compact centerset for a traditional or builder-grade vanity, or a widespread for a high-end, custom look on a wider vanity. If you're deciding between separate handles and a single lever, our single-handle vs two-handle faucet guide covers that trade-off in depth.
Undrilled countertop? Favor the single-hole. When customers come to us with a blank stone top and no strong style requirement, we usually steer them toward a single-hole faucet. Drilling one clean hole is lower-risk than drilling three in perfect alignment, and it keeps the door open to swap faucet styles later without re-drilling. You can browse the full range on our single-hole faucet collection.
This is the single most important step, and it takes about a minute. Here's the exact method Bathify's team uses to identify any sink's configuration before recommending a faucet.
Look at the sink deck from directly above
With the old faucet removed (or checking the spec sheet if the sink isn't installed yet), look straight down at the deck. Count the drilled openings. One opening in the center means a single-hole sink; three openings in a row means a centerset or widespread sink.
Measure center-to-center between the outer holes
For a 3-hole sink, put a tape measure on the center of the far-left hole and read to the center of the far-right hole. About 4 inches means a centerset sink. About 8 inches (sometimes up to 16) means a widespread sink.
Measure each hole's diameter
Measure across the widest point of an opening. Standard is about 1⅜ inches, though some faucets need up to 1½ inches. This confirms the faucet's shanks will pass through and seal.
Check the sink or faucet spec sheet
Every faucet lists the hole count and required spread. Match it to your measurements. At Bathify, each product page states the configuration, so you can confirm the fit before you order.
No, bathroom faucet holes are not all identical - but they're standardized enough that most faucets fit most sinks of the matching configuration. Two measurements matter: the diameter of each hole, and the spread (spacing) between them.
| Spec | Standard Measurement | What It Means |
|---|---|---|
| Hole diameter | ~1⅜" (35 mm); up to 1½" | The opening each faucet shank passes through. Most faucets accept this range. |
| Single-hole | 1 hole | One opening for a single-body faucet. |
| Centerset spread | 4" center-to-center | Three holes, outer two 4 inches apart. Compact 3-hole layout. |
| Widespread spread | 8" to 16" center-to-center | Three holes, outer two 8+ inches apart. Pieces are independent. |
| Mini-widespread | 4" spread, 3 pieces | Widespread look (separate pieces) on a 4-inch centerset hole pattern. |
The practical takeaway: on a 3-hole sink, the spread is what decides compatibility. A faucet built for a 4-inch spread won't reach an 8-inch sink, and an 8-inch widespread can't contract onto a 4-inch pattern. Manufacturers confirm the same standard - for example, Moen's support documentation describes a centerset as using three holes with a 4-inch spread, as shown in this manufacturer explanation of centerset vs widespread. At Bathify, we recommend recording your spread in inches before shopping so you can match it to the faucet's stated configuration exactly.
What if the faucet you love doesn't match the holes you have? This is the most common question our team fields at Bathify, so here's exactly what's possible - and what isn't.
Single-hole faucet on a 3-hole sink ✔ Easy
This works and is extremely common. You install the single-hole faucet in the center hole and cover the two outer holes with a deck plate (also called an escutcheon) - a slim cover that spans all three holes for a finished single-hole look. Many single-hole faucets include or offer a matching deck plate. At Bathify, we point customers toward this route constantly when they want a modern single-hole look on an existing 3-hole vanity.
Centerset on a single-hole sink ✔ Usually fine
Because a centerset mounts on a connected base plate, many models can install through a single hole as well, giving you flexibility. Always confirm on the spec sheet, but this is a common and workable swap.
Widespread on a single-hole or 4-inch sink ✘ Hard
A true 8-inch widespread needs three holes at the right spread. You cannot fit one onto a single-hole sink without drilling two new holes, and you can't stretch it onto a 4-inch centerset pattern. If you're set on the widespread look but have a 4-inch sink, a mini-widespread - separate pieces on a 4-inch spread - is the fix our team recommends instead.
Not every sink comes with holes - and sometimes that's by design. Many vessel sinks (the bowl-style basins that sit on top of the counter) and some designer basins ship with no pre-drilled deck holes, leaving the faucet decision entirely up to you.
At Bathify, we recommend two routes for a hole-free setup. A wall-mount faucet plumbs through the wall above the basin, keeping the deck and countertop completely clear - a dramatic, easy-to-clean look that works beautifully over vessel sinks. Alternatively, a tall single-hole vessel faucet mounts in a single hole drilled into the countertop behind the basin, sized tall enough to arc comfortably over the raised bowl. You can explore both in our wall-mount faucet collection and our vessel sink faucet collection.
Because a vessel bowl sits above the counter, a standard-height faucet will be too short. Bathify recommends matching the faucet height and spout reach to your bowl so water lands in the drain, not on the rim. Our dedicated guides on vessel sink faucets and faucet height walk through the exact numbers - linked in the series below.
Match the faucet to the holes you have - then choose style
Existing 1-hole sink: Buy a single-hole faucet. It's the cleanest fit and Bathify's deepest category - plenty of choice from Riobel, Kraus, and Agua Canada.
Existing 3-hole sink, 4" spread: Buy a centerset, a single-hole faucet with a deck plate, or a mini-widespread. Our team recommends the centerset for the easiest classic look.
Existing 3-hole sink, 8" spread: Buy an 8-inch widespread faucet. This is the upscale, custom look and the right match for wider vanities.
Undrilled countertop, no strong style need: Favor a single-hole faucet - one clean hole, lowest install risk, easiest to change later.
Vessel sink or no holes: Choose a wall-mount faucet or a tall single-hole vessel faucet. Confirm height and reach against your bowl.
Whatever your configuration, the one rule that never changes: confirm your hole count and spread first. At Bathify, that's the foundation of every faucet recommendation we make - and it's what keeps installs quick and returns rare.
Bathify carries single-hole, centerset, and 8-inch widespread bathroom faucets from Riobel, Delta, Kraus, Agua Canada, and Kube Bath. These are standout picks once you know how many holes your sink has.
For a 1-hole sink (single-hole faucets)
The most affordable way into a quality single-hole faucet at Bathify, and our most popular entry-level pick. Single-lever control, low-arc modern spout, and it ships with a matching pop-up drain and supply lines - so it's effectively install-ready out of the box. Ideal for a 1-hole sink, or a 3-hole sink with a deck plate.
A crisp, square-profile single-hole faucet from Riobel - the brand Bathify carries most deeply across both single-hole and widespread ranges. The Kubik's geometric lines suit contemporary and minimalist vanities, and the single-lever body keeps the deck uncluttered. A clean, mid-priced choice our team recommends often for modern 1-hole setups.
Riobel's Riu line is a step up in finish and feel - a refined cylindrical silhouette for homeowners who want a single-hole faucet that reads high-end. Available across Riobel's premium finish range. If you want the uncluttered single-hole look without compromising on quality, this is the premium end of Bathify's 1-hole lineup.
For a 3-hole sink (centerset & widespread)
A dependable 4-inch centerset from Delta - one of the trusted US faucet names Bathify stocks. Two handles and spout on a single base plate that covers all three holes, so it drops neatly onto a standard 4-inch 3-hole vanity. A classic, no-fuss choice for traditional and transitional bathrooms, and an easy install.
A purpose-built 3-hole widespread faucet with separate spout and two handles, offered in a modern matte black finish. The Ramirez gives you the upscale, spread-out widespread look without a premium price - our team's value recommendation for homeowners with an 8-inch 3-hole sink who want contemporary styling.
The widespread expression of Riobel's Riu line - three separate pieces across an 8-inch spread for a true custom, luxury look on a wider vanity. Available with lever or cross handles depending on finish. When a customer wants the most elevated 3-hole setup Bathify offers, this is where we point them.
Shop Bathroom Faucets at Bathify
Single-hole, centerset, and widespread faucets from Riobel, Delta, Kraus, and Agua Canada - matched to exactly how many holes your sink has. Free shipping on orders over $50. Shipped across the USA.
