What units do these expect?

Every field states its unit in the label or as a selectable option, and the result names its own unit. Where both metric and imperial are supported a selector appears, and changing it resets the dependent inputs to sensible defaults so a kilogram value is never silently reinterpreted as a pound value.

Can I use these for coursework?

For checking, yes. The steps show the substitution so you can compare against your own working line by line. Submitting a calculator output as your method is not the same as showing working, and marks for these questions usually attach to the derivation rather than the final number.

Science calculators

Physics, chemistry, and scientific calculation tools

3 calculators · 1 guide

Science calculators here handle the standard relationships from introductory physics and electronics: speed, distance and time; voltage, current, resistance and power; kinetic and potential energy.

Each rearranges its formula for whichever variable you are solving, states the units it expects, and shows the substitution. Unit mismatches are the main source of wrong answers in this group, so check whether a field wants metres or kilometres, seconds or hours, before reading the result.

Start with these in Science

Speed Distance Time CalculatorSolve for speed, distance or time from the other two, in kilometres or miles, with pace per kilometre and every common speed unit.Science Ohm's Law CalculatorSolve voltage, current, resistance or power for a DC circuit, with milliamps, energy per day and the resistor power rating you should fit.Science Energy CalculatorCalculate kinetic energy, gravitational potential energy or work done, and convert the answer into kilojoules, kilowatt-hours, calories and BTU.Science

Every Science calculator

3 calculators

Guides for Science

8 min readOhm's Law and Electrical Load: The Practical BasicsVoltage, current, resistance and power explained for real circuits, plus why load calculations and circuit sizing are licensed work.

Questions about science calculators

What units do these expect?: Every field states its unit in the label or as a selectable option, and the result names its own unit. Where both metric and imperial are supported a selector appears, and changing it resets the dependent inputs to sensible defaults so a kilogram value is never silently reinterpreted as a pound value.
Can I use these for coursework?: For checking, yes. The steps show the substitution so you can compare against your own working line by line. Submitting a calculator output as your method is not the same as showing working, and marks for these questions usually attach to the derivation rather than the final number.