How to use
- 1
Type or tap the expression.
- 2
Check DEG or RAD.
- 3
Press = or Enter; toggle fraction ↔ decimal if needed.
When to use it
Homework
Mixed trig and log expressions.
No calculator handy
Use it on your phone.
Exact answers
See results as fractions.
Good to know
- Multiplication signs are optional (2π, 3(4+1)).
- Ans is the last result.
- Click history to reuse an expression.
FAQ
Fractions?
Results that are exact fractions (denominator up to 10,000) can be shown as fractions.
sin 30 is not 0.5?
Switch from RAD to DEG.
Precision?
About 15 significant digits.