Convert between CSS units: px, rem, em, %, vw, vh, pt, cm, mm, and in. Configurable base font size.
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Enter a value and its unit, then see instant conversions to all other CSS units. Adjust the base font size for accurate rem/em calculations.
Modern CSS requires mixing units for responsive design. This tool eliminates mental math and ensures your conversions are accurate, especially when working with non-default base font sizes.
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