¿Qué es Regla en línea?

Regla virtual gratuita en línea. Mide el tamaño de objetos directamente en la pantalla, compatible con cm y pulgadas.

¿Por qué usar Regla en línea?

  • Calibrate with a credit card or other standard-size object for real accuracy
  • Dual-scale ruler: centimeters (top) and inches (bottom) with proper subdivisions
  • Draggable calipers with real-time distance readout
  • Pointer mode with crosshair for position tracking
  • Local storage saves calibration for your device

Cómo usar Regla en línea — Paso a paso

1

Open Calibration and select a reference object (credit card, A4 paper, or coin).

2

Place the physical object flat against your screen, then adjust the slider until the on-screen box matches its real size.

3

Choose Caliper mode and drag the red handles to span the object you want to measure.

4

Read the measurement in cm, inches, and pixels simultaneously.

¿Para quién es Regla en línea?

  • crafters
  • DIY enthusiasts
  • designers
  • anyone needing to measure physical objects without a tape measure

Regla en línea — Preguntas frecuentes

How accurate is the online ruler?

After calibration with a credit card, accuracy is typically within 1-2mm on most displays. The key is to carefully match the on-screen rectangle to your physical reference object using the calibration slider.

How do I use the calipers?

Switch to Caliper mode, then drag the red triangular handles on the vertical lines. The distance between them updates in real time. You can also click anywhere in the measurement area to snap the nearest handle to that position.

¿Listo para usar Regla en línea?

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