What is 3.5 cm by 4.5 cm in pixels?

Using 96 DPI, 3.5 cm is about 132 px and 4.5 cm is about 170 px, so 3.5 cm × 4.5 cm is roughly 132 px × 170 px.

Can I convert pixels to centimeters as well?

Yes. While cmtopx.com focuses on CM to PX, the tool also supports reverse PX to CM calculations using the same formulas and 96 DPI reference by default.

Can I use this converter for print sizes?

Yes, if you use the correct DPI for your printer or design (for example 300 DPI). For CM to PX: px = cm × DPI ÷ 2.54. For PX to CM: cm = px × 2.54 ÷ DPI.

Convert Centimeter (CM) to Pixel (PX)

Type in centimeters or pixels and get instant results. Uses a 96 DPI reference (1 inch = 96 px, 1 inch = 2.54 cm).

Real-time • Mobile-friendly • CM ⇄ PX

Please provide values below to convert centimeter [cm] to pixels (px), or vice versa.

From:

centimeter

To:

pixel (px)

Note: Uses 96 DPI as default. For other DPI, scale using the formulas in the guide below.

How the CM to PX Calculator works

Pixels are a digital unit; centimeters are a physical unit. To relate them, we use DPI (dots per inch). This calculator assumes a common screen density of 96 DPI. With that assumption:

1 inch = 2.54 cm
1 inch = 96 px
1 px = 2.54 / 96 ≈ 0.026458 cm
1 cm ≈ 96 / 2.54 ≈ 37.80 px

How to use the CM ⇄ PX calculator

Use the ⇅ button to switch between CM → PX and PX → CM.
Enter your value in the From box.
The To value updates instantly—no need to press Convert.
Use the Clear button to reset both fields.

Actual printed or on-screen size may differ if your device or document uses a different DPI.

Centimeter to Pixel (CM to PX) Conversion Table

Approximate values at 96 DPI:

Centimeters (cm)	Pixels (px)
1 cm	≈ 38 px
2 cm	≈ 76 px
5 cm	≈ 189 px
10 cm	≈ 378 px
20 cm	≈ 756 px
30 cm	≈ 1134 px

How to Convert Centimeter to Pixel (CM to PX)

Use these formulas:

px = cm × DPI ÷ 2.54
With 96 DPI: px = cm × 96 ÷ 2.54
cm = px × 2.54 ÷ DPI (for reverse PX → CM)

How many pixels is 1 cm?

At 96 DPI, 1 cm is approximately 37.80 px (≈ 38 px).

What is 3.5 cm × 4.5 cm in pixels?

Using 96 DPI: 3.5 cm ≈ 132 px and 4.5 cm ≈ 170 px. So ID/passport style 3.5 × 4.5 cm is about 132 × 170 px.

What is 1920 × 1080 resolution in cm?

At 96 DPI: 1920 px ≈ 50.80 cm and 1080 px ≈ 28.58 cm. Real size will change if your monitor has a different DPI.

How much is 50 px in cm?

At 96 DPI, 50 px is approximately 1.32 cm.

FAQs

Does this calculator assume 96 DPI?

Yes. For consistency, cmtopx.com uses 96 DPI as a standard screen reference. If your device or design uses a different DPI, apply the same formulas with your DPI value.

Can I adapt this for 300 DPI print?

Absolutely. For 300 DPI: px = cm × 300 ÷ 2.54 and cm = px × 2.54 ÷ 300. For example, 10 cm at 300 DPI is ≈ 1181 px.

Why do different screens give different physical sizes?

Because actual DPI changes between monitors, laptops, and mobiles. Pixels are fixed units in your design; centimeters (and thus CM to PX results) depend on device pixel density.

Is this tool suitable for UI, web, and print designers?

Yes, cmtopx.com is ideal for designers who need quick CM to PX and PX to CM estimates for layouts, mockups, and print planning, as long as the correct DPI for the target medium is used.