Length converters
Screen, print and everyday lengths in one place. Pixel conversions take a DPI setting, so the answer matches your actual output.
Resolution (DPI / PPI)
Precision (significant figures)
Formula
cm = px ÷ DPI × 2.54
1 px = 0.0264583 cm at 96 DPI
All length converters
| Converter | Units | Typical use |
|---|---|---|
| Pixels to Centimeters | px → cm | Print size of an image or layout |
| Centimeters to Pixels | cm → px | Pixel size needed for a print job |
| Pixels to Millimeters | px → mm | Physical size of pixels in print or CSS |
| Millimeters to Pixels | mm → px | Canvas size for metric print specs and bleed |
| Pixels to Inches | px → in | How large an image prints, in inches |
| Inches to Pixels | in → px | Canvas size for US print sizes |
| Centimeters to Inches | cm → in | Screens, clothing and product sizes |
| Inches to Centimeters | in → cm | US product and body measurements |
| Feet to Meters | ft → m | Heights, rooms and building plans |
| Meters to Feet | m → ft | Room sizes, ceilings and altitude |
| Kilometers to Miles | km → mi | Runs, road distances and travel |
| Miles to Kilometers | mi → km | Driving distances and race lengths |
| Millimeters to Inches | mm → in | Tools, fasteners and small parts |
| Inches to Millimeters | in → mm | Drill bits, pipes and fasteners |
| Yards to Meters | yd → m | Fabric, sports fields and golf |
| Meters to Yards | m → yd | Fabric and sports distances |
Common situations
Why people usually need a length conversion, and which tool answers it.
The print shop wants a 30 × 40 cm poster at 300 DPI, and your artboard is in pixels.
Pixels have no physical size until you choose a DPI. The risk: the print comes back soft or the wrong size, and you pay for it twice.
What you need
The exact pixel size to export for that print size.
Centimeters to PixelsImage Print Size CalculatorPaper Size Calculator
A TV, suitcase limit or product listing is given in inches, and you think in centimeters (or the other way round).
Doing ×2.54 in your head on a phone, mid-decision. The risk: buying something that doesn’t fit and paying for the return.
What you need
The size in your own units, exactly.
Inches to CentimetersCentimeters to InchesScreen Size Calculator
A visa form, a doctor or a dating app asks for your height in centimeters, and you know it in feet and inches.
Feet and inches don’t convert in one step. The risk: a wrong number on an official document.
What you need
Your height in cm, rounded the way forms expect.
Related calculators
| Calculator | Typical use |
|---|---|
| Feet and Inches to CM | Height for forms and records |
| CM to Feet and Inches | Metric height in US and UK terms |
| Paper Size Calculator | A4, Letter and more in mm, in and px |
| Image Print Size Calculator | How big a photo can print sharply |