Resolution lookup
2.5×3.5 Aspect Ratio: 5:7 Calculator
Find the 2.5×3.5 aspect ratio (5:7), see the reduction steps, and calculate resized dimensions without stretching.
2.5 × 3.5 has a 5:7 aspect ratio when both measurements use the same unit. It is a portrait shape, not 2:3. Decimal measurements must be scaled together before simplifying.
Resize With This Ratio — 5:7
Change either side. The other updates proportionally. Results show whole pixels and the exact value before rounding.
Exact height: 700 px
How the ratio is calculated
2.5 ÷ 0.5 = 5; 3.5 ÷ 0.5 = 7. Dividing both sides by the same value preserves the proportions and gives 5:7. For decimal measurements, scale both sides to integers first, then use the greatest common divisor.
Height = width × 7 ÷ 5. Width = height × 5 ÷ 7. These formulas change size without changing shape. They do not crop or pad the source.
Photo print proportions: scaling and framing
Multiply 2.5 and 3.5 by ten to obtain 25:35, then divide by five to get 5:7. If the dimensions are inches, a 300-pixels-per-inch export is 750 × 1050 pixels. This print calculation assumes the stated density; the ratio itself does not specify density or print quality.
Ratio, resolution and units
A ratio compares width with height; it does not describe file size, compression or image quality. Enter both sides in pixels, inches or another matching unit. This calculator assumes square pixels for digital images. Video with a non-square pixel aspect ratio needs its display aspect ratio checked separately.
5:7 resizing examples
| Width | Exact height | Rounded height |
|---|---|---|
| 320 px | 448 px | 448 px |
| 640 px | 896 px | 896 px |
| 1080 px | 1512 px | 1512 px |
| 1920 px | 2688 px | 2688 px |
Decimal heights are displayed to four decimal places. Rounding can change the final ratio slightly. For an exact integer result, use dimensions that are whole-number multiples of 5:7.