Select a number
Double-click a numeric value on a webpage, or open the converter from the right-click menu.
Chrome extension by Redwert
Every number,
understood.
Double-click a value on any webpage and convert it instantly. No new tab, no copy-paste, no broken flow.
- Fast in-page conversions
- Local processing
- Free to get started
Selected
128 mm
Converted
12.8 cm
Made for
EngineersStudentsDevelopersResearchersEveryday browsing
Conversion without interruption
Stay on the page.
Keep your momentum.
The converter appears beside the number you are reading, gives you a clean result, then gets out of the way.
Choose your units
Smart detection helps identify the value. Adjust the category or units whenever you need to.
Use the result
Get the answer instantly in a compact, draggable interface—without leaving your page.
One tool, many measures
Ready for the numbers you meet every day.
From technical articles and specifications to recipes and international shopping, the units you need stay close at hand.
Open in Chrome Web StoreLength
Millimetres, centimetres, metres, kilometres, inches, feet and miles.
Weight
Grams, kilograms, pounds, ounces and the units you see most often.
Area
Square units, acres, hectares and more for work or everyday questions.
Volume
Millilitres, litres, gallons and related units with a few quick choices.
Currency
Popular currencies including USD, EUR, INR and GBP as a premium feature.
Conversion assistant
Small interface. Useful details.
Built to feel native to your browsing.
- 01Draggable popup
Move the converter so it never blocks the content you are reading.
- 02Preferred conversions
Save a category and unit pair for a faster default next time.
- 03Formatted numbers
Handles comma-separated values and common numeric formats.
Private by default
Your browsing data
is not the product.
Conversions are processed locally in your browser. Smart Unit Converter.AI does not track, log or share the values you convert.
✓ Local processing
✓ No conversion history sent to us
✓ No advertising profile
Good to know
Answers before
you add it.
How do I start a conversion?+
Double-click a number on a webpage. You can also use the right-click context menu when that feels more natural.
Which conversion categories are supported?+
The extension supports length, weight, area and volume, with currency conversions available as a premium feature. More categories are planned.
Does it send selected values to Redwert?+
No. Conversion processing is designed to happen locally in Chrome, and the extension does not track or log the values you convert.
Can I remember my usual units?+
Yes. Save a preferred category and unit pair, and the extension can use that setup by default for future conversions.
Smart Unit Converter.AI
Never search for a
conversion again.
One small extension. A smoother way to understand numbers everywhere.
AVAILABLE ON THEChrome Web Store