Pixel Pitch, Explained: P4 to P20, and How to Pick

Ask a salesperson what pixel pitch you need and you’ll get a fast answer. Ask them to explain why that number fits your specific location, and you’ll find out quickly whether they know what they’re talking about.

Pixel pitch is the distance, in millimeters, between the center of one LED cluster and the next, written as “P” followed by the number, so P4 means 4mm, P10 means 10mm. Think of it like dots per inch on a printed photo: a low number means the clusters sit close together, sharp up close, like a high-resolution photo. A high number means they’re spread further apart, reading cleanly only from a distance, like a newspaper halftone.

Get it wrong in either direction and it costs you. Too coarse, and the display looks blocky up close. Too fine, and you’re paying a real premium for resolution your audience can’t see from the road.

The viewing distance formula

Minimum comfortable viewing distance (ft) ≈ pixel pitch (mm) × 3.5.

A P10 sign, for example, works out to a minimum distance of about 35 feet. Some engineers use a more conservative multiplier of 4, to account for sharper-than-average vision or viewers who end up closer than expected, a reasonable lower bound when image quality really matters.

Pitch	Min. distance	Optimal range
P2	7 ft	21–35 ft
P3	10 ft	30–50 ft
P4	14 ft	42–70 ft
P5	18 ft	54–90 ft
P6	21 ft	63–105 ft
P8	28 ft	84–140 ft
P10	35 ft	105–175 ft
P16	56 ft	168–280 ft
P20	70 ft	210–350 ft

These are formula-based approximations, not hard cutoffs; actual results shift with ambient light and content type. And they’re minimums, not sweet spots: if your closest viewer stands at 35 feet, a P10 sign is technically sufficient, but a P8 at that same distance gives you a noticeably cleaner image with headroom for finer-detail content later.

The common pitches, at a glance

Pitch	Sweet spot	Best for	Skip if
P4	Indoor, 14 ft+	Hotel lobbies, luxury retail, showrooms, video walls	Viewing past 60 ft, or direct sunlight
P6	Outdoor, 21 ft+	Restaurants, storefronts, dealerships, urgent care	Audience past ~130 ft, or you need indoor-grade video
P8	Outdoor, 28–60 ft	Churches, schools, mid-size lots, suburban roadside	Very close viewers (under 30 ft)
P10	Roadside, 35–220 ft	Gas stations, churches, schools, fast food, drive-throughs	Viewers within 30 ft, or fine typography
P16/P20	Highway-scale, 150 ft+	Billboards, stadium scoreboards, large entrance signs	Any meaningful share of viewers within 50 ft

P6 sits near the efficiency crossover point for outdoor brightness: it can hit outdoor viewing levels without the heat or shortened lifespan finer pitches run into, and the resolution P4 offers is generally invisible past about 25 feet in daylight anyway. P8 gets skipped over in favor of the better-known P6 and P10, but for a church sign where the nearest driver is 35 feet out, it threads the needle: full video capability, at a real cost saving below P6. And P10 remains the most widely sold pitch in the U.S. for good reason: it’s engineered for the distance range where most businesses actually need roadside attention.

Indoor vs. outdoor changes more than the enclosure

Indoor environments have controlled light, so signs don’t need much brightness, and viewers often stand a few feet to a few dozen feet away, which favors finer pitches, generally P2 to P6, and video and fine text both read well. Outdoor environments deal with direct sunlight, so signs need to run far brighter, and viewers are typically much further away, which favors P6 and up, with bold text and simple graphics over fine detail.

One common mistake: putting an indoor-rated fine-pitch panel somewhere semi-outdoor, like a covered patio. These spots may dodge direct rain but still see humidity, insects, and temperature swings, so an outdoor-rated module makes sense even if you keep a finer pitch like P4 or P6. And if you’re installing in a glass-front lobby visible from both inside and the parking lot, spec it for the outdoor viewing distance: a P4 panel that looks great to visitors inside can look pixelated to someone approaching from the lot.

Let content drive the decision too

Most buyers think about pitch purely in terms of distance, but what you’ll actually show on the sign matters just as much, and often pushes toward a finer pitch than distance alone suggests.

Text-heavy content (service times, announcements, daily specials) is sensitive to pitch, since thin character strokes can disappear on coarser displays, especially italics or serif fonts. Photography and video are the most demanding, needing enough density for smooth gradients and accurate skin tones. High-contrast simple graphics (a sale price, a gas price display, a logo on a solid background) are the most forgiving, which is part of why P10 and even P16 work fine for that kind of content.

Before locking in a pitch, list the handful of content types you expect to run most in the first year. If more than one leans on photography, video, or fine typography, factor that in alongside the distance formula.

By industry, roughly

Industry	Typically recommended	Usually not a fit
Church reader board	P8–P10	P4
School marquee	P8–P10	P4
Restaurant storefront	P6	P10
Restaurant indoor menu board	P3–P4	P10
Auto dealership roadside	P6–P8	P16
Hotel lobby / reception	P2.5–P4	P10
Gas station price sign	P10–P16	P4
Stadium scoreboard	P10–P16	P4
Highway billboard	P16–P20	P6

What finer pitch actually costs

The relationship isn’t linear: each step down in pitch means more LEDs per square foot, tighter manufacturing tolerances, and more processing power, so cost compounds quickly. As a rough sense of scale, P4 typically runs several times the cost per square foot of P10, P6 sits around double, and P8 carries a modest premium over P10. Larger-format P16 and P20 panels generally cost less per square foot than P10, since fewer LEDs cover the same area. Power draw follows the same pattern: finer pitches need more LEDs and often a larger electrical circuit, which is worth factoring into planning alongside the purchase price.

The rule of thumb: don’t buy a finer pitch than your viewing distance and content actually call for. The resolution gain at distance often isn’t visible to your audience, but the cost difference is very real.

A quick framework for finding your pitch

Measure the minimum distance to your closest regular viewer, then divide by 3.5 for your maximum sensible pitch. Decide indoor, outdoor, or semi-outdoor, since that sets your general range. Think through what content you’ll actually run most: mostly text supports the formula as-is, while photography or video usually calls for stepping one or two pitches finer. Check your realistic budget: if the formula points to P10 and budget allows, there’s rarely a need to upgrade to P6 for resolution nobody will notice. And think beyond day one: pixel pitch is a hardware decision. It can’t be upgraded later without replacing the LED modules themselves.

Mistakes we see often

Buying indoor modules for an outdoor spot: always check the IP rating. Choosing pitch off a showroom demo instead of your actual site, since demos are usually viewed from 10–20 feet in controlled lighting where fine pitches look stunning, and a coarser pitch at 80 feet in daylight can look just as good. Over-specifying to impress rather than to serve the site. Ignoring minimum viewing distance for close-up spots like an entrance hall. And forgetting that content type can override the distance formula entirely: running detailed food photography on a pitch chosen for text-only viewing rarely looks right.

The right pitch is the one your audience can actually see

Pixel pitch isn’t a measure of quality on its own. It’s a measure of resolution relative to viewing distance. A P10 sign in the right application isn’t a cheap sign, it’s the correct engineering choice. A P4 sign in the wrong location isn’t a premium sign, it’s an expensive mismatch. Measure first, adjust for content, confirm the environment, then commit. The pitch you choose today shapes what that sign can display for the next decade.

Not sure which pitch fits your location? LED Craft’s team can review your site, viewing distances, and content plans and recommend a pitch that fits your budget without overselling resolution you don’t need. See our full LED sign buying guide, browse our outdoor LED sign options, or get in touch with our team directly.

Call (844) 533-2723 | ledcraftinc.com | info@ledcraftinc.com

Cost and power figures are general and directional. Actual pricing and electrical requirements vary by manufacturer, cabinet size, quantity, and region. Confirm site-specific numbers with a qualified LED sign professional before finalizing a spec.