Free Online Converter Tools
Units, colors and encoded text, converted instantly — no signup, no cost.
Switching between measurement systems or text encodings is a small task that comes up often, and QuickToolKit's converter tools handle it without needing a calculator or a lookup table. The Unit Converter covers length, weight, temperature, speed, area and more, which matters in particular for anyone working between the UK's mix of metric and imperial units (miles, stones, feet and inches) and the US's imperial-first system — enter a value once and see it converted across every relevant unit at the same time. And the Base64 Encoder/Decoder converts text to and from Base64 format instantly, which is useful for debugging API payloads, embedding small assets, or decoding data you've been sent. Both tools process everything locally in your browser — nothing you type or convert is sent to a server — so they're safe to use with sensitive values and fast enough for quick, repeated checks while you work.