All Tools

22 free tools, all running entirely in your browser.

Measurement

Rulers, converters, and sizing tools that work right in your browser.

Online Ruler

An accurate on-screen ruler in centimetres, inches, and pixels.
Crochet Hook Size Chart

Identify an unmarked hook by holding it against your screen, plus the full mm-to-US chart.
Knitting Needle Size Chart

Identify an unmarked needle against your screen, plus the full US-to-mm chart.
Beads Per Inch

How many beads fill an inch, plus a true-size gauge to identify what you have.
Sandpaper Grit Chart

CAMI, FEPA and JIS grits against actual particle size — including where they disagree.
Fabric Count Gauge

Hold unmarked Aida or evenweave against a calibrated grid to find its count.
Socket Size Gauge

Hold a bolt head against a true-scale hex outline to identify its size.
Button Size Chart

Lay a button on the screen to find its ligne size, plus the full ligne-to-mm chart.

Calculators

Fast, single-purpose calculators with no sign-up required.

Text

Counters, formatters, converters, and cleaners for text.

SRT to Text

Strip timecodes from a subtitle file and get clean readable text.

Images

Resize, convert, and inspect images without uploading them anywhere.

Developer

Encoders, formatters, and generators for everyday development work.