Units
Unit Conversion Calculator for Windows
Prepare a conversion in English
Convert 72 mph to km/h.Use Ask in 3.1, review the units, Insert calculation, then explicitly evaluate. The conversion is 115.872768 km/h before display rounding. Convert 2.5 hours to minutes. gives 150 minutes. English recognition uses the existing unit registry; it does not change case-sensitive symbols or permit comma-decimal input. See the question guide.
Convert a temperature without reworking the formula
Convert 100 degrees Celsius to Fahrenheit using the existing temperature converter.
Copy this expression into SumWise, then press Enter to calculate.
convert(100,C,F)Expected result: 212 °F. At −40, the Celsius and Fahrenheit numbers coincide.
Temperature conversion is separate from quantity arithmetic; it does not imply that temperature units can be combined in every expression. Continue with the documented workflow.
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Quantity arithmetic with supported dimensions
Alongside the legacy converter described here, SumWise 3.1 supports mechanical/electrical typed quantities: 5[m] + 30[cm], 12[V]/4[ohm] and compatible output through in_unit(...). Brackets attach a supported unit; dimensions are checked. Legacy temperature conversion does not imply temperature quantity arithmetic. Exact/Approx describe represented arithmetic, not measurement certainty. Try the quantity examples.
SumWise supports unit conversion inside the same Windows desktop app used for scientific calculation, graphing, symbolic math, statistics, matrices, vectors, and constants.
Conversion Features
Conversion changes the representation of one value. Quantity arithmetic combines compatible dimensions in a calculation: work through kinetic energy or compare ideal resistor current.
- Use canonical conversion syntax such as
convert(100, km/h, mph). - Use the compact conversion shorthand such as
100 km/h to mphor100km/h to mph. - See unit-aware results such as
62.1371192237334 mph. - Convert common length, speed, temperature, mass, area, volume, pressure, energy, power, time, and data units.
Examples To Try
Enter one expression per calculation.
convert(100, km/h, mph)100 km/h to mphconvert(1, mile, km)convert(100, C, F)1.5kg to lb0.5hours to minutes-40C to Fconvert(1, acre, square_meter)convert(1, MB, MiB)Good Fit For
SumWise is useful for science homework, engineering calculations, physics examples, technical unit checks, and everyday conversion work where the result should stay inside a broader math workflow.