Bubble Level & Compass: Precision Orientation Tool

Check tilt angles and cardinal directions using your smartphone's built-in sensors.

iOS users: Tap the button above to enable motion sensors.

Level and Navigate: Precision Bubble Level & Digital Compass 📐🧭

Turn your phone into a high-accuracy alignment tool. Use your device’s built-in gyroscope and magnetometer to measure surface tilt and find your heading in real-time.

💡 About This Tool

Stop guessing if your shelves are straight or which way is North. This tool replaces bulky hardware with a professional-grade digital spirit level and compass.

Whether you’re hanging a gallery wall, leveling a DIY workbench, or navigating a new city, get instant, sensor-driven feedback directly in your browser.

📘 Quick Start

  • Level your surfaces: Place your phone flat on any object. Center the "bubble" in the target to hit 0°.
  • Find your heading: Hold your phone horizontally. The compass tracks North (N) based on your device's orientation.
  • Visualize in 3D: Watch the 3D cube mirror your phone’s movements to verify sensor accuracy.
  • iOS Activation: Tap Enable Sensors to allow your browser to access motion data (a standard iOS privacy requirement).

🧐 Troubleshooting & FAQ

Why are the readings fluctuating? Magnetic interference from laptop speakers, phone case magnets, or nearby metal can disrupt the compass. For the level, ensure your phone's camera bump isn't propping the device at an angle.

How do I improve compass accuracy? Move your phone in a "Figure 8" motion. This recalibrates the internal magnetometer and stabilizes the heading.

Does this work on all devices? Most modern smartphones include the necessary sensors. If you are on a desktop or a budget device without a gyroscope or magnetometer, the tool will not display orientation data.

📚 Technical Trivia

The "Bubble Level" is formally known as a Spirit Level, invented in the 17th century. Before digital sensors, these used glass vials filled with spirits (alcohol) to prevent freezing, with a single air bubble acting as the indicator.

Today, your phone uses MEMS (Micro-Electro-Mechanical Systems). Microscopic weighted structures move by nanometers when you tilt your device, changing electrical capacitance. Your phone translates these tiny physical shifts into the precise angles you see on this screen.