You are halfway through a pump calculation when the viscosity is in centistokes, the data sheet wants Pa·s, and the flowrate is in barrels a day. A general-purpose converter buries what you need under hundreds of obscure units. Uconeer is built to avoid that clutter.
Quick facts
- Latest version: 4.1
- Platform: Windows (a separate note on the vendor's site covers Mac support)
- Price: single-user license at a regular US$29.95
- Trial: a free, fully functional evaluation version for 30 days
- Guarantee: 30-day money back after purchase, and upgrades are free for 12 months

Key features
450 practical units in 48 categories
The list covers the units engineers use every day. It leaves out archaic and esoteric units, so the menus stay short. If something is missing, you can add your own custom units.
Consistent results across compound conversions
All compound conversion factors use the same underlying factors. Two routes to the same answer won't give you slightly different numbers.
Special engineering calculators
Dedicated converters handle mass/volume flowrate, kinematic to dynamic viscosity, steel hardness, feet and fractional inches, the Gas Constant and the Reynolds Number.
Steam tables with search
The package includes IAPWS IF-97 Steam Tables with a search function.
Quick access to what you use most
Recently used categories stay visible for single-click selection. Frequently used conversions can be marked as favorites. The latest update lets you paste values copied from spreadsheets even when they carry thousand separators.
Who it's for
Process, mechanical and chemical engineers, scientists and technicians who convert units all day and want a short, relevant list. If you only convert the occasional temperature or length, a free web converter will do.
Pros and cons
- Pro: a focused unit list with engineering categories such as enthalpy, entropy, torque and thermal conductivity.
- Pro: a 30-day fully functional trial lets you test it before paying.
- Pro: custom units and favorites.
- Con: it is paid software, not freeware, after the trial.
- Con: it is a Windows program, so Mac users need a different route.
- Con: by design it leaves out archaic units, so historical or unusual units may need to be added by hand.
FAQs
Is Uconeer free?
You can test the full-featured trial for 30 days. Continued use needs a single-user license.
Can I add my own units?
Yes. You can add custom units to the built-in list.
Does it convert viscosity?
Yes. It converts between dynamic and kinematic viscosity.
Do I pay for updates?
Upgrades are free for 12 months after purchase.
Does it include steam tables?
Yes, IAPWS IF-97 steam tables with search.