Step 1: Measure Your Wall
Use a tape measure to find the exact width of your wall in feet and inches. Measure at the height where you'll hang the frames walls aren't always perfectly straight.
The Fractional Wall-Spacing Calculator
A picture hanging calculator determines exact nail placement for perfectly centered, equidistant frames on any wall. Enter wall width, frame sizes, and desired spacing to get precise measurements from the wall edge to each nail — including the gallery-standard 57-inch height rule.
Enter your wall and frame dimensions below to see a live preview of your gallery layout.
Distance from frame top to nail hook
Configure your wall and frames above, then hit "Calculate Spacing" to see exact measurements.
Measured from the left wall edge
Nail positions will appear here after calculation.
Use a tape measure to find the exact width of your wall in feet and inches. Measure at the height where you'll hang the frames walls aren't always perfectly straight.
Using the calculated positions, measure from the left edge of the wall and place a small pencil mark at each nail point. Use a level to ensure all marks are at the same height.
The center of your artwork should be at eye level typically 5760 inches from the floor. Add half the frame height, then subtract the hardware offset to find your nail height.
Use painter's tape to mock up frame positions on the wall before committing to nails. For heavy frames, use wall anchors instead of nails. Always check for studs and electrical wiring before drilling.
Ensure your gallery wall is perfectly straight! We highly recommend a laser level and a reliable picture hanging hardware kit to make the job effortless.
Creating a beautiful gallery wall requires exact spacing. GalleryGap takes the math out of hanging pictures by calculating the perfect fractional inch spacing between frames, whether you want them equally spaced, clustered in the center, or pushed to the edges. Enter your wall and frame dimensions to instantly get a visual layout and precise nail positions. All calculations are performed 100% locally on your device for absolute privacy.
Measure the total wall width, subtract the combined width of all frames, then divide the remaining space equally — including the gaps at both ends. The center point of each frame should be at eye level, typically 57" to 60" from the floor, which is the gallery standard used by museums worldwide.
The 57-inch rule places the center of each picture at 57 inches from the floor — the average eye height when standing. Museums, galleries, and interior designers use this standard because it creates a consistent visual line across differently-sized artwork. For hallways where people are walking, 60 inches works better.
Use 2" to 3" between frames for a cohesive gallery wall. Larger gaps (4" to 6") work when frames are very large or when you want a more minimalist, airy feel. Keep all gaps consistent — uneven spacing is the most common mistake in gallery wall layouts.