This online ruler allows you to measure real-world objects directly on your screen. Unlike many ruler online tools, this ruler is accurately calibrated for specific iPhone models, ensuring precise measurements in centimeters and inches.
What Is an Online Ruler?
An online ruler is a digital measuring tool that works directly in your web browser. It allows you to measure objects without installing an app, using your device’s screen as a real-size ruler.
Because screen sizes and resolutions vary between devices, accuracy depends heavily on proper calibration.
How Accurate Is This Online Ruler?
Many ruler online tools rely on generic screen assumptions, which can result in inaccurate measurements. This online ruler is different.
iPhone models have fixed and well-documented screen dimensions. By calibrating the ruler for each iPhone model, this tool provides more reliable real-size measurements in centimeters and inches.
Online Ruler for iPhone (Calibrated by Model)
Please select your smartphone model from the list below.
How to Use This Ruler Online
- Open this page on your iPhone.
- Select your iPhone model.
- Place the object directly on the screen.
- Measure the length in centimeters or inches.
Online Ruler vs Other Ruler Online Tools
| Feature | Zyougi Online Ruler | Typical Online Ruler |
|---|---|---|
| Model-based calibration | Yes | No |
| Real-size accuracy | High | Varies |
| iPhone optimization | Yes | No |
Limitations of This Online Ruler
- PC displays may not provide accurate real-size measurements.
- Android devices are not fully supported.
- Screen zoom must be set to 100% for correct results.
FAQ About Online Rulers
Is this ruler online really accurate?
This ruler online is calibrated for specific iPhone models, which makes it more accurate than generic online ruler tools.
Can I use this online ruler on a PC?
You can use it on a PC, but accurate real-size measurements cannot be guaranteed due to differences in monitor sizes and scaling settings.