Ruler App: Measuring Tape

If you're looking for a reliable digital tape measure that fits in your pocket, this ruler app turns your Android screen into an accurate length tool. Whether you need inches, centimeters, or millimeters, you can measure objects instantly without carrying a physical tape. It also works as an angle and area tool, making it a smart companion for projects at home, school, or work.

Measure Length, Angle, and Area in One Tool
- On-screen ruler: Place any small object against the screen to read its exact size in inches, cm, or mm.
- Digital protractor: Measure angles and slopes with the built-in angle tool, helpful for geometry and construction.
- Area calculator: Set width and height to estimate area for tiling, framing, or design tasks.
- Screen calibration: Adjust the scale using a standard card or tape to keep every measurement accurate.
- Multi-unit support: Switch between inches, millimeters, and centimeters with one tap.

Smart Tools for Everyday Measuring
1. Quick length checks: Use the screen ruler for small objects like screws, coins, and cards.
2. Angle reading: Rotate your device to measure angles on flat surfaces.
3. Area estimation: Input two sides to calculate square inches or square centimeters.
4. Calibration mode: Match the scale to your own ruler or card for consistent accuracy.
5. Night view: A dark theme makes measuring in low light easier on your eyes.
6. Offline access: All ruler functions work without an internet connection.

No matter what you need to measure, this ruler app keeps the essentials ready. Download it now and start measuring with confidence.

Digital Ruler and Measuring Tape Alternatives:
Most people don't want to carry a separate tool. This digital ruler works like a traditional measuring tape but uses your screen for quick, on-the-go measurements. It is a practical length measurement app for anyone who works with small parts or needs a backup for their toolbox.

Accurate Angle and Area Measurements:
Beyond ruler lines, this app functions like a compact digital protractor and area tool. You can check the slope of a photo, measure a corner, or calculate the space for a new shelf. The interface is simple enough for a classroom, yet powerful enough for quick engineering checks.

Calibration for Reliable Results:
Accurate measurements start with calibration. This screen ruler lets you set a known reference, such as a standard plastic card or another ruler, so the scale matches your device. Once calibrated, you can trust every inch, centimeter, and millimeter reading.

Perfect for Everyone:
- Students: use it for geometry, math, and quick size checks during homework or projects.
- DIYers: measure furniture, gaps, and materials without searching for a tape measure.
- Engineers and makers: rely on precise angle and area reading for design or repairs.
- Travelers and shoppers: check product sizes or small objects while on the go.

Feature Checklist:
✔ Works as a digital tape measure for everyday tasks
✔ Easy on-screen ruler for fast length checks
✔ Unit switch between inches, centimeters, and millimeters
✔ Angle measurement for slopes and geometry
✔ Area calculator for width and height estimates
✔ Offline mode with no internet required
✔ Night theme for low-light use
✔ Lightweight and optimized for Android devices
✔ Simple calibration with any standard card or tape measure

Get the reliable measuring companion and keep it one tap away.

Recent changes:
Thanks for using RulerApp! We bring updates to Google Play regularly to constantly improve speed, reliability, performance and fix bugs.