Online Ruler CM
On-screen ruler in centimeters. Visual ruler with cm marks for quick measurement reference.
Reference ruler (calibration depends on your screen). 1 cm ≈ 37.8 px at 96 DPI.
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Frequently Asked Questions
- How accurate is the ruler?
- Accuracy depends on your screen DPI. Use for rough reference; calibrate with a real ruler if you need precision.
- Can I use it on mobile?
- Yes. The ruler displays in cm; actual size may vary by device screen.
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