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NEW MISSION: SURVIVE THE PLAYER.

Tools

Screen Ruler
Protractor
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Dead Pixel Test
Aspect Ratio Calculator
Pixel Converter
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Device Rulers

iPhone 15 Pro Max
iPhone 15 Pro
iPhone 14
Galaxy S24 Ultra
Galaxy S24
iPad Pro 12.9"
iPad Air

Measurements

1 cm Ruler
5 cm Ruler
10 cm Ruler
30 cm Ruler
1 inch Ruler
6 inches Ruler
12 inches Ruler

Calibration Objects

Credit Card
US Quarter
1 Euro Coin
£1 Coin
A4 Paper

Popular Guides

Blog
Why online rulers are inaccurate (and how to fix it)
Best online ruler tools compared (2026)
How to measure without a ruler — 7 methods
How to measure your phone screen size
What is screen PPI and why it matters
Standard Credit Card Size (ISO 7810)

Resources

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Accurate ruler for phones, tablets and desktops. No download required.

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