Unit converters
The small conversions you reach for mid-job, each on its own fast page. Every one works both directions and updates as you type — no toggling, no waiting.
Length & fractions
Slope & angle
Pressure & wire
Volume & weight
A converter and a calculator are different jobs. A converter just re-expresses one number in another unit; a quantity tool takes measurements and works out how much to order. If it is the second you are after, the whole drawer is on the index.
Quantity tools that also convert
These converters re-express a figure in another unit; they are only as right as the number you put in. Where a conversion leans on a material property, such as density, you supply that value — so double-check it against your own source before ordering to it.
New tools, now and then
We add calculators most weeks. Drop your email and get a short note when a new one lands — nothing else, no selling your address, one-click out.