4000 × 3000 resolution
4000 × 3000 has a 4:3 aspect ratio and contains 12,000,000 pixels (12 MP). An exact 4:3 camera frame containing twelve million pixels.
Quick answer
What aspect ratio is 4000 × 3000?
4000 × 3000 reduces exactly to 4:3, the same shape as 4:3. No approximation is needed.
gcd(4000, 3000) = 10004000 ÷ 1000 : 3000 ÷ 1000 = 4:3Treat 4000 × 3000 as a landscape photo. Keep both dimensions linked when resizing. Changing only one edge changes the ratio and can stretch the image; cropping or adding canvas space is safer when the destination uses another shape.
Pixel count and memory
The frame contains 12,000,000 pixels, or 12 megapixels. Uncompressed pixel memory is about 34.33 MiB for RGB or 45.78 MiB for RGBA.
Those are working-memory estimates, not JPG, PNG or video file sizes. Compression, bit depth, frame rate and codec change the stored file size. For video, use the bitrate-based file size calculator.
How to use this size
The 12 MP count describes pixel quantity, not lens detail or image quality. Preserve the 4:3 shape while resizing, and make a new copy before destructive cropping.
Before export, confirm whether the destination requests this exact resolution, only the 4:3 ratio, or a maximum file size. These are different requirements. Use the image checker to verify an existing file without uploading it.
Scale 4000 × 3000 proportionally
These sizes keep the same shape. Whole-number results are exact; fractional results are rounded to the nearest pixel and may differ by a tiny amount.
| Scale | Dimensions | Pixel note |
|---|---|---|
| 25% | 1,000 × 750 | Exact integer scale |
| 50% | 2,000 × 1,500 | Exact integer scale |
| 75% | 3,000 × 2,250 | Exact integer scale |
| 100% | 4,000 × 3,000 | Exact integer scale |
| 125% | 5,000 × 3,750 | Exact integer scale |
| 150% | 6,000 × 4,500 | Exact integer scale |
| 200% | 8,000 × 6,000 | Exact integer scale |
Print size at common PPI values
PPI converts pixels to physical dimensions; it does not change the aspect ratio. Print size equals pixels divided by PPI.
| Resolution density | Size in inches | Size in millimetres |
|---|---|---|
| 72 PPI | 55.56 × 41.67 in | 1,411.11 × 1,058.33 mm |
| 96 PPI | 41.67 × 31.25 in | 1,058.33 × 793.75 mm |
| 150 PPI | 26.67 × 20 in | 677.33 × 508 mm |
| 300 PPI | 13.33 × 10 in | 338.67 × 254 mm |
Printer capability, viewing distance, paper and sharpening also affect perceived quality. Plan another density with the print size and DPI calculator.
Crop or fit 4000 × 3000 into another ratio
Crop size is the largest centered rectangle of the target shape that fits inside the source. Fit canvas keeps every source pixel and adds space around it. Crop-loss values use rounded whole-pixel dimensions.
| Target | Largest crop | Area lost | Smallest fit canvas |
|---|---|---|---|
| 1:1 | 3,000 × 3,000 | 25% | 4,000 × 4,000 |
| 4:5 | 2,400 × 3,000 | 40% | 4,000 × 5,000 |
| 16:9 | 4,000 × 2,250 | 25% | 5,334 × 3,000 |
| 9:16 | 1,688 × 3,000 | 57.8% | 4,000 × 7,112 |
Subject placement can make a mathematically centered crop unsuitable. Preview the edges with the crop loss calculator, or calculate padding and an FFmpeg command with the letterbox calculator.
Resolution, ratio and display size are different
Resolution is 4000 pixels wide by 3000 pixels high. Aspect ratio is the reduced shape 4:3. Display or print size requires a physical measurement or pixel density. Two files can share 4:3 while having very different pixel counts.
For example, scaling this frame to 50% produces 2,000 × 1,500. It keeps the shape but contains one quarter of the original pixels because both axes are halved.
Frequently asked questions
Is 4000 × 3000 4:3?
Yes. It reduces exactly to 4:3.
How many megapixels is 4000 × 3000?
It contains 12,000,000 pixels, which is 12 megapixels using one million pixels per megapixel.
What is half of 4000 × 3000?
At 50% on both axes, the size is 2,000 × 1,500. Both dimensions remain whole pixels.
Can I change it to 16:9 without stretching?
Yes, but use a crop or add canvas space. Do not independently force the width and height, because that distorts the content.
Related resolution guides
Compare resolutions with the same ratio first, then nearby sizes used in a similar workflow.