All Tools
15 free tools, all running entirely in your browser.
Measurement
Rulers, converters, and sizing tools that work right in your browser.
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Online Ruler
An accurate on-screen ruler in centimetres, inches, and pixels.
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Crochet Hook Size Chart
Identify an unmarked hook by holding it against your screen, plus the full mm-to-US chart.
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Knitting Needle Size Chart
Identify an unmarked needle against your screen, plus the full US-to-mm chart.
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Beads Per Inch
How many beads fill an inch, plus a true-size gauge to identify what you have.
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Sandpaper Grit Chart
CAMI, FEPA and JIS grits against actual particle size — including where they disagree.
Calculators
Fast, single-purpose calculators with no sign-up required.
Text
Counters, formatters, converters, and cleaners for text.
Images
Resize, convert, and inspect images without uploading them anywhere.
Developer
Encoders, formatters, and generators for everyday development work.
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Base64 Decode for Excel
Decode a Base64 cell to text or back to the original file, without a macro.
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Hex to RGB for Excel
Hex, R/G/B, the RGB() formula, and the reversed BGR long Excel actually stores.
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Unix Timestamp to Excel Date
Epoch seconds to an Excel serial and back, with the 1900 bug and 1904 Mac offset.