Variables
Functions
Functions of x
t / θ from to
Pick a type for each row: functions, inequalities (shaded), polar r(θ) or parametric x(t); y(t). Any extra letter, like a in a·x^2, becomes a slider. Drag to pan, scroll to zoom, hover to trace. Graphs use radians.
Numbers are read in the selected base. Prefix to override: 0x1F, 0b101, 0o17, 0d42. Operators: + − × / %, & AND, | OR, ^ XOR, ~ NOT, << >> shifts. Results wrap to the word size. Click a bit to flip it.
Unit math
Do math with units mixed together. Add to and a unit to choose the answer's unit (65 mph to km/h, 100 degF to degC, 2 GB / 50 Mbps to min).
Unit converter
In every unit
Difference between dates
Add or subtract
Loan / mortgage
Monthly payment
Yearly amortization
Savings / compound interest
Final balance
Year by year
Percentages
% of=
is what % of=
Fromto=
Tip, discount & tax
Data
Results
Matrices
Separate entries with spaces or commas. Entries can be expressions like 1/3 or sqrt(2). "Solve A·x = B" solves a system of linear equations.