화면비 계산기

대각선 인치, 가로 또는 세로 길이를 입력하여 모든 화면 규격을 즉시 계산하세요.

1. Select Aspect Ratio

Decimal:1.78:1
Custom Ratio:
:

2. Enter Any Dimension

Diagonal, Width, or Height

Popular sizes:

Interactive Diagonal Slider27.0"
5" (Phone)27" (Desk)55" (Living Room)100"+ (Cinema)
Optional: Calculate Pixel Density (PPI) & Megapixels▼

Calculated Dimensions

Diagonal27.00″
68.58 cm
Width23.53″
59.77 cm
Height13.24″
33.62 cm
Screen Area311.5 sq in
2,009.6 cm²
Aspect Ratio Decimal1.778 : 1 (16:9)
Viewing Distance (SMPTE / THX)3.7 ft / 2.8 ft
Pixel Density & MegapixelsEnter resolution above

Interactive Visualizer

27.0″ (68.6 cm)W: 23.5″ (59.8 cm)H: 13.2″ (33.6 cm)
Letterbox / Pillarbox Simulator

Simulate black bars when watching different video ratios on this display:

Standard Displays Quick Guide

16:9 Standard
DiagonalWidth (in / cm)Height (in / cm)Area
24″20.9″ (53.1 cm)11.8″ (29.9 cm)246 sq in
27″23.5″ (59.8 cm)13.2″ (33.6 cm)312 sq in
32″27.9″ (70.8 cm)15.7″ (39.8 cm)438 sq in
55″47.9″ (121.8 cm)27.0″ (68.5 cm)1,293 sq in
65″56.7″ (143.9 cm)31.9″ (80.9 cm)1,805 sq in
100″87.2″ (221.4 cm)49.0″ (124.5 cm)4,272 sq in
Mathematical Formulas & Step-by-Step Derivation▼

Screen dimensions are calculated using the Pythagorean Theorem (W² + H² = D²) combined with the ratio proportion W / H = Rw / Rh:

1. Screen Width from Diagonal (d) and Ratio (w:h):

Width = d × w ÷ √(w² + h²)

2. Screen Height from Diagonal (d) and Ratio (w:h):

Height = d × h ÷ √(w² + h²)

3. Screen Area:

Area = Width × Height

4. Pixel Density (PPI):

PPI = √(Horiz_px² + Vert_px²) ÷ Diagonal_in

Optimal Viewing Distance: SMPTE recommends a 30-degree field of view for mixed multimedia (Distance ≈ Diagonal × 1.62), while THX recommends a 40-degree field of view for cinematic immersion (Distance ≈ Diagonal × 1.2).

FAQ

화면비는 어떻게 계산하나요?

가로 해상도를 세로 해상도로 나누고 최대공약수로 약분합니다. 예를 들어 1920×1080은 16:9가 됩니다.

내 화면이 16:9인지 16:10인지 어떻게 알 수 있나요?

운영체제 디스플레이 설정에서 해상도를 확인하세요. 비율이 약 1.78이면 16:9, 1.6이면 16:10입니다.