Source-visible learning library
Calculator programs
Review Python program source, compatibility evidence, limitations, and transfer guidance before downloading anything.
Browse calculator programsThe calculators are loading. JavaScript is required for calculations, but every guide and explanation remains available.
Private by design: Values, units, working, and answers stay in this browser; expressions do too. A successful action may send only one fixed category—never the input or result—to the existing private aggregate counter.
Student Toolkit
Physics Unit Converter
Convert only between compatible quantities. Temperature offsets, squared and cubed units, and bits versus bytes use explicit reviewed rules.
New here? Read the unit conversion guide or review significant figures.
Converted result
- Relationship
- Canonical working value
- Unrounded result
- Rounding
Educational guidance only. Check the required method, units, and precision for your course.
Recent unit pairs this tab
Only unit choices are kept, and only in this open page. Values and results are not stored.
Student Toolkit
Formula Lab
Choose a reviewed relationship, select the unknown, and enter the known values with their units. Formula Lab converts through canonical units and shows the same working used to calculate the answer.
Read How to Use Physics Formulas Responsibly before relying on a model’s assumptions.
Reviewed example
Formula Lab answer
- Original formula:
- Rearranged formula:
- Unit conversions:
- Substitution in canonical units:
- Working result:
- Rounded answer:
Variable definitions
Constraints
Assumptions
Educational guidance only. Check the model, method, and permitted tools for your course; this is not a professional engineering or safety determination.
Student Toolkit
Scientific Calculator
Enter an allowlisted mathematical expression with the keyboard or button grid. Expressions and memory stay only in this open page and are never sent to the server.
Read the calculator basics and expression safety guide for precedence, domains, and examples.
Use explicit multiplication. Percent is postfix and always means “divide the preceding value by 100,” so 200 × 10% equals 20. Powers associate from the right; −2^2 equals −4.
Result · DEG