No ruler? No problem! RefSize is a powerful camera measurement tool that lets you measure any object in the real world using a known reference. Whether it's a coin, a credit card, or a business card, RefSize turns your smartphone into a high-precision digital tape measure.
Unlike traditional AR rulers that can be unstable, RefSize uses proportional scaling based on physical objects you already know. Just snap a photo, and get accurate dimensions instantly!
Turn your smartphone into a high-precision digital tape measure
Everything you need to measure objects accurately and efficiently
Use familiar items (coins, bills, ID cards) as a scale to measure anything next to them. No special equipment needed.
Use our Magnifying Glass (Zoom), drag-and-drop, and fine-tuning controls to mark edges with pixel-perfect accuracy.
Save your measurements (e.g., "Computer Mouse - 12cm") into a dedicated list for quick reference later.
Once you measure an object, you can save its size and use it as a new reference for future photos.
Easily switch between Metric and Imperial units (mm, cm, m, inches, feet). Measure in your preferred system.
Can't find a coin? Add your own custom reference objects by entering their known width or height.
Measure anything quickly and accurately
Put a familiar object (like a 1-cent coin) next to what you want to measure (like a computer mouse) and take a photo.
Drag the markers to match the size of the known reference. Use zoom and fine-tuning for pixel-perfect accuracy.
Adjust the second set of markers to the target object. Boom! You have the exact dimensions. Press "Save" to add it to your history.
Ideal for everyday measurement needs
Check if a piece of furniture or a gadget will fit your space before buying.
Measure hardware, bolts, or craft materials on the go without carrying a ruler.
Quickly document the size of stamps, coins, or artifacts for your collection.
A handy tool for quick measurements when you don't have a physical ruler nearby.
Download RefSize today and turn your camera into the smartest ruler in your pocket!
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