Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Inches to Pixels Converter (72 DPI and 300 DPI)
px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
Pixels = inches × DPI. A 4×6 print at 300 DPI is 1200×1800 px. Screens often assume 96 DPI in CSS. If the print shop said 300, do not export at 72 and hope.
Inches
in → px
300 px
CSS treats 1 in as 96 px. Print at 300 DPI is a different, denser grid.
- Inches
- 1
- DPI
- 300
- At 72 DPI
- 72 px
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Inches
The “Inches” value used in this tool’s formula. Adjust it to see results update live.
DPI
The “DPI” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
Pixels = inches × DPI. A 4×6 print at 300 DPI is 1200×1800 px. Screens often assume 96 DPI in CSS. If the print shop said 300, do not export at 72 and hope. px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print. Example: 1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
Example: 1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
When to use this Inches to Pixels
Common use cases
- Pixels = inches × DPI. A 4×6 print at 300 DPI is 1200×1800 px. Screens often assume 96 DPI in CSS. If the print shop said 300, do not export at 72 and hope.
- Sanity-check with this case: 1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
- The relationship is: px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Inches, DPI
- px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
- Example on the page: 1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
How to Convert Inches to Pixels Step-by-Step
- 1Enter Inches, DPI. Use the values you have, not a catalog average, unless that is all you know.
- 2px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
- 3Worked case: 1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.
1 in at 300 DPI → 300 px. 1 in at 72 DPI → 72 px. 8.5 in letter width at 300 → 2550 px.
Example: set Inches = 1, DPI = 300, then read the result.
Variable definitions
- value
Inches
The “Inches” field. Default 1; typical range 0–40.
- dpi
DPI
The “DPI” field. Default 300; typical range 72–600.
- The conversion (px = inches × DPI. 72 DPI is old Mac/print points; 300 DPI is common photo print.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
Device pixels ≠ CSS pixels. This is the document raster, not the iPhone screen.
Related calculators
Unit Converters
- Inches to PointsDesktop publishing locked the point at 1/72 of an international inch. 1 in = 72 pt. Letter paper 8.5 in is 612 pt. This is not 96 CSS px per inch and not a 300 DPI raster. For px, pick a DPI on the points-to-pixels page.
- BMI Metric and ImperialBMI = kg / m² = 703 × lb / in². Same index, two unit systems. It does not know muscle, bone, or why a powerlifter and a couch get the same number. Categories are public-health bins, not a diagnosis.
- Bra Size ConverterBand in inches (US/UK) and cup letter. EU bands are centimeters rounded to 5 (34 → 75). Cup letters drift after D: UK DD vs US DD/E is a forum war. Sister sizes (34C / 32D) share cup volume, not this converter’s job.
- Centimeters to InchesHeight charts, inseam tables, and sewing patterns swap cm and inches constantly. Divide cm by 2.54. A 180 cm person is about 5 ft 11 in — the leftover 0.16 in is why both sides of a doorway argue about the last fraction.
- Centimeters to Pixelspx = (cm / 2.54) × DPI. A 10 cm bar at 300 DPI is 1,181 px. A4 width 21 cm at 300 DPI is 2,480 px. Packaging die-lines still want millimeters and bleed; this is the raster step.
- Cubic Inches to Cubic CentimetersEngine displacement: a “350” small-block is 350 in³, about 5.7 L (5,735 cc). Multiply in³ by 16.387. One liter is 1,000 cm³. This is why 5.0 L and 302 in³ show up on the same valve cover.
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Community
Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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