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Free Unit Converter Online – Length, Weight, Temp & Speed Any Unit. Instantly.
Convert any unit instantly — free, fast, and no fluff. Length, weight, temperature, speed — from everyday units to the most obscure ones on Earth.
📏 Length & Distance
⚖️ Weight & Mass
🌡️ Temperature
💨 Speed & Velocity
🔢 + 50 more categories
500+
Units Supported
0ms
Server Latency
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Unit Converter Workspace
Paste your text with units below, configure options, then hit ✨ Purify
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Paste text with units
Supports plain text, markdown, CSV
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How UnitFlip Works
Three simple steps to flawlessly convert every unit in your document
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1. Paste Your Text
Drop in any text containing units — recipes, technical docs, travel notes, academic papers, anything.
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2. Pick Your Options
Choose your target unit system, formatting preferences, and whether to show both units side by side.
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3. Get Instant Results
Hit Purify and watch every unit get converted in-context, preserving the original meaning and flow.
All Unit Categories
From imperial to metric, obscure to everyday