px
Pixel
Base unit for typography
Typography conversion
Inch to Millimeter
Convert Inch (in) to Millimeter (mm) with formula, reference table, and source-backed typography guidance on Unitly.
inFrom unit
25.41 in in mm
8Units in category
Conversion workbench
Typography
8 unitsOpen dedicated page
Quick values
Live summary
1 in = 25.4 mm
Convert between inch and millimeter with a shareable route, copy-ready result, and instant recalculation.
Current units
InchMillimeter
Need another pair? Change units here or open the dedicated page for this exact route.
Other outputs
1 in across typography
Pixel
96
px
Point
72
pt
Pica
6
pc
Twip
1440
twip
Centimeter
2.54
cm
Quarter-Millimeter
101.6
Q
How this conversion works
1 Inch = 25.4 mm
Unitly uses category-specific factors and formulas, then surfaces quick values on the same page so the result is easier to audit.
Reference table
10 examplesQuick values from Inch to Millimeter
| Inch (in) | Millimeter (mm) |
|---|---|
| 0.1 | 2.54 |
| 0.5 | 12.7 |
| 1 | 25.4 |
| 2 | 50.8 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1270 |
| 100 | 2540 |
| 1000 | 25400 |
Real-world use
Why this route is useful
Typography and screen-unit conversions help when design systems, print specs, and CSS values need to line up.
Convert between px, pt, and pc when moving designs between web, product, and print workflows.
Translate inch, centimeter, and millimeter values into CSS-friendly pixel dimensions.
Check assumptions around classic typesetting units such as picas and twips.
px to ptpt to pxpx to inchestypography converter
Trusted references
Standards and guidance behind the numbers
W3C CSS Values and Units
Defines CSS absolute length relationships such as 1 inch = 96 px and 1 point = 1/72 inch.
NIST SP 811
NIST guide to SI use, style, and conversion factors.
Use the formula, table, and methodology page together when you want a fast answer and a stronger audit trail.
Complete unit reference
8 units in categoryMore typography routes from this page
pt
Point
1 Point = 1.333333 px
pc
Pica
1 Pica = 16 px
twip
Twip
1 Twip = 0.06666667 px
in
Inch
Current from
1 Inch = 96 px
cm
Centimeter
1 Centimeter = 37.795276 px
mm
Millimeter
Current to
1 Millimeter = 3.779528 px
Q
Quarter-Millimeter
1 Quarter-Millimeter = 0.94488189 px
FAQ
3 answersCommon questions about inch to millimeter
What is 1 Inch in Millimeter?
1 Inch equals 25.4 mm. Unitly shows the live result, formula context, and a reference table on the same page so you can verify the conversion faster.
How do you convert Inch to Millimeter?
Use the factor or base-unit path shown on this page. For this route, Unitly summarizes it as 1 Inch = 25.4 mm.
How does Unitly review typography conversions?
Unitly stores category-specific conversion factors and formulas, then checks them against standards and guidance such as W3C CSS Values and Units and NIST SP 811. For technical pages we also surface formulas, reference values, and related routes so the number is easier to audit.
Related routes
Keep exploring typography conversions.
These routes start from inch and branch into other units in the same category.