Functions available
Besides the basic operations, the calculator offers trigonometric functions (sin, cos, tan), logarithms (log and ln), powers and roots, factorials, and constants such as pi and e. Use it for algebra, physics and chemistry problems, engineering coursework and exam practice.
Tips for accurate answers
- Check whether the calculator is in degree or radian mode before using trigonometric functions: sin(30) is 0.5 in degrees but about -0.988 in radians.
- Use brackets to control the order of operations.
- Round only your final answer.
When this is useful in Pakistan
Matric, FSc and O/A-Level students often need a scientific calculator for practice at home. Check your board's rules on approved models for the exam hall, because many boards prohibit programmable or graphing calculators.
For everyday money and unit tasks see the percentage calculator and unit converter.
Functions and what they do
| Key | Meaning | Example |
|---|---|---|
| sin, cos, tan | Trigonometric ratios | sin(30 deg) = 0.5 |
| sin-1, cos-1, tan-1 | Inverse trig | sin-1(0.5) = 30 deg |
| log | Base-10 logarithm | log(1000) = 3 |
| ln | Natural logarithm | ln(e) = 1 |
| x^2, x^y | Powers | 2^10 = 1024 |
| sqrt | Square root | sqrt(144) = 12 |
| n! | Factorial | 5! = 120 |
Order of operations
Calculations follow brackets, then powers and roots, then multiplication and division, then addition and subtraction. Enter long expressions with brackets to avoid surprises: for example (3 + 4) x 2 is 14 but 3 + 4 x 2 is 11.
Study tips
Learn what each function means before relying on the answer. Check results by estimation, for instance sqrt(50) must be a little above 7. Students preparing for exams can plan revision with the study planner, track marks with the GPA calculator and convert marks with the percentage calculator. For daily conversions use the unit converter.
Frequently asked questions
Does it support degrees and radians?
Check the mode shown on the calculator before using trigonometric functions.
Can I use it in an exam?
Only if your board allows it. Exam halls usually require a physical approved calculator.
Is it free?
Yes, with no download or signup.
How do I calculate a root?
Use the root or power key, for example raise a number to the power of 1/2 for a square root.