4:3 aspect ratio (1.333:1): resolutions and sizes
4:3 means 4 units wide for every 3 tall, so width ÷ height = 1.333 and the height is 75% of the width. Exact 4:3 sizes are whole multiples of 4 × 3, such as 1440 × 1080 (360 × 4 by 360 × 3).
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At a glance
4:3
4:3 is 1.333:1.
- Decimal
- 1.333:1
- Height as share of width
- 75%
- Exact sizes
- width a multiple of 4, height the same multiple of 3
4:3 widths at common heights
| Height | Width at 4:3 | Whole pixels | Size page |
|---|---|---|---|
| 360 | 480 | yes | - |
| 480 | 640 | yes | 640x480 |
| 720 | 960 | yes | - |
| 768 | 1024 | yes | 1024x768 |
| 900 | 1200 | yes | - |
| 1080example size | 1440 | yes | 1440x1080 |
| 1200 | 1600 | yes | - |
| 1440 | 1920 | yes | 1920x1440 |
| 1600 | 2133.33 (nearest whole: 2133 × 1600) | no | - |
| 2160 | 2880 | yes | - |
Crop common sizes to 4:3
| Size | Centered 4:3 crop | Share kept | Exact |
|---|---|---|---|
| 1920 × 1080 | 1440 × 1080 | 75% | yes |
| 3440 × 1440 | 1920 × 1440 | 55.8% | yes |
| 1080 × 1920 | 1080 × 810 | 42.2% | yes |
| 2560 × 1440 | 1920 × 1440 | 75% | yes |
| 1280 × 720 | 960 × 720 | 75% | yes |
| 3840 × 2160 | 2880 × 2160 | 75% | yes |
| 1080 × 1350 | 1080 × 810 | 60% | yes |
| 1920 × 1200 | 1600 × 1200 | 83.3% | yes |
4:3 against other ratios
| Other ratio | Decimal | Share kept or filled | Cropping 4:3 cuts | Padding adds bars |
|---|---|---|---|---|
| 16:9 | 1.778:1 | 75% | top and bottom | left and right |
| 9:16 | 1:1.778 | 42.2% | the sides | top and bottom |
| 4:5 | 1:1.25 | 60% | the sides | top and bottom |
| 1:1 | 1:1 | 75% | the sides | top and bottom |
| 1.91:1 | 1.91:1 | 69.8% | top and bottom | left and right |
Pages for exact 4:3 sizes
Facts about 4:3
- The smallest whole-pixel 4:3 size is 4 × 3; 9 of the 10 common heights in the table give a whole-pixel width.
- No whole-pixel 4:3 size is 1600 px tall: the width would be 2133.33 px.
- Turned on its side, a 4:3 frame becomes 3:4: 1440 × 1080 becomes 1080 × 1440.
- Cropping 4:3 to 9:16 keeps the least of the common ratios, 42.2%; cropping to 16:9 keeps the most, 75%.
- Of the listed sizes in the crop table, 1920 × 1200 keeps the most when cropped to 4:3 (83.3%) and 1080 × 1920 the least (42.2%).
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Aspect ratio 4:3 (1.333:1). Exact match for 4:3.
Aspect ratio
4:3
1.333:1
Exact match for 4:3.
- Width ÷ height
- 1.3333
- Height ÷ width
- 0.75
- Shape
- landscape
Your numbers, worked
gcd(1440, 1080) = 360
1440 ÷ 360 = 4
1080 ÷ 360 = 3
1440 ÷ 1080 = 1.3333
Show how the gcd was found
- 1440 = 1 × 1080 + 360
- 1080 = 3 × 360 + 0
Divide the larger side by the smaller, then divide the last divisor by the remainder until the remainder is 0. The last divisor is the gcd.
What each ratio would cut from 1440 × 1080
The largest centred crop at each ratio, best fit first. Crop rather than stretch.
| Ratio | Fit | Crop to | Lost |
|---|---|---|---|
| 4:3 | Exact | 1440 × 1080 | 0% |
| 5:4 | Trim width | 1350 × 1080 | 6.25% |
| 3:2 | Trim height | 1440 × 960 | 11.1% |
| 16:10 | Trim height | 1440 × 900 | 16.7% |
| 1:1 | Trim width | 1080 × 1080 | 25% |
| 16:9 | Trim height | 1440 × 810 | 25% |
| 1.91:1 | Trim height | 1440 × 754 | 30.2% |
| 2:1 | Trim height | 1440 × 720 | 33.3% |
| 4:5 | Trim width | 864 × 1080 | 40% |
| 21:9 | Trim height | 1440 × 617 | 42.9% |
| 3:4 | Trim width | 810 × 1080 | 43.8% |
| 2:3 | Trim width | 720 × 1080 | 50% |
| 9:16 | Trim width | 608 × 1080 | 57.8% |
| 32:9 | Trim height | 1440 × 405 | 62.5% |
Solve the missing side
Pick a ratio, then enter the side you know.
Height is 1080. Size 1440 by 1080 pixels.
Size at 4:3
1440 × 1080
Height solved, in pixels.
Your numbers, worked
H = W × 3 ÷ 4 = 1440 × 3 ÷ 4 = 1080
Whole number, so no rounding is needed.
Pixel-exact: a 4:3 size needs the width to be a multiple of 4, and 1440 is 360 × 4.
Questions
What resolutions are 4:3?
640 × 480, 1024 × 768, 1280 × 960, 1440 × 1080 and 1920 × 1440 are exactly 4:3. Any size whose width is a multiple of 4 and whose height is the same multiple of 3 is exact.
How do I work out a 4:3 height from a width?
Multiply the width by 3 and divide by 4: 1440 × 3 ÷ 4 = 1080. The other way, width = height × 4 ÷ 3. At 1600 px tall the width is 2133.33, so no exact whole-pixel 4:3 size is that tall.
How much of a 4:3 image does a 9:16 crop keep?
42.2%. The share kept is the smaller decimal divided by the larger: 0.563 ÷ 1.333. Padding a 4:3 image to 9:16 instead fills the same share of the canvas.
Nearby sizes
Look up a ratio or resolution
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Which devices use this ratio, and marketing names for it, are not covered: we did not verify a primary source for them, so this page sticks to arithmetic.