Scientific Calculator
Type a whole calculation the way you would write it, such as sin(30) + √16 × 3! − log(1000), and the answer appears as you type, with every step of the working listed in the order it was done. It handles trig in degrees or radians, logs, powers, roots, factorials, combinations, percentages, π and e, and also shows the answer as a fraction and in scientific notation.
- As a fraction
- 43/2
- Scientific notation
- 2.15 × 10¹
- Expression check
- OK
Step-by-step working
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Saved setups
Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.
Your recent calculations
Results you calculate here are kept on this device so you can come back to them.
Formula
How to use it
- Type the expression on one line. The keyboard symbols + - * / ^ work, and so do × ÷ − √ ² ³.
- Choose degrees or radians for the trig functions.
- Read the result, then follow the step-by-step table to see the order the calculation was done in.
Worked examples
sin 30° + √16 × 3! − log 1000 (order of operations)
- Result
- 21.5
- As a fraction
- 43/2
- Scientific notation
- 2.15 × 10¹
- Expression check
- OK
tan 45° + (cos 60°)² in degrees
- Result
- 1.25
- As a fraction
- 5/4
The hypotenuse of a 3-4-5 triangle
- Result
- 5
$5,000 compounded monthly at 4% for 10 years
- Result
- 7,454.16341209
Five-card poker hands from 52 cards: 52C5
- Result
- 2,598,960
sin(π/2) + ln(e²) in radians
- Result
- 3
tan 90° is undefined
- Expression check
- Undefined: division by zero, a root or log of a negative number, or a result too large
What you can type
Trig: sin, cos, tan, sec, csc, cot and the inverses asin, acos, atan. Hyperbolic: sinh, cosh, tanh, asinh, acosh, atanh. Logs: log (base 10), ln (base e), log2, log(x, b) for any base, and exp. Roots: sqrt or √, cbrt or ∛, and root(x, n) for any root. Powers: ^, ² and ³. Factorial: 5!. Counting: ncr(n, r) and npr(n, r). Also abs, round(x, places), floor, ceil, min, max, mod, and the constants π (or pi), e and tau.
Put ° after a number to mark one angle as degrees while in radian mode: sin(30°) is 0.5 in either mode.
Degrees or radians?
Most school geometry gives angles in degrees, where sin 30° = 0.5. Calculus and physics use radians, where a full turn is 2π; in radian mode sin(30) is about −0.988, because 30 radians is almost five full turns. If a trig answer looks wrong, check this setting first. It is the most common mistake on any scientific calculator.
Exact angles give exact answers: sin 180° and cos 90° come out as 0 rather than a leftover such as 1.2 × 10⁻¹⁶, and tan 90° is reported as undefined.
Order-of-operations traps
6 ÷ 2(1 + 2) is worked strictly left to right: 6 ÷ 2 × 3 = 9. If you mean 6 ÷ (2 × 3) = 1, add the parentheses.
As in Excel, a leading minus sign belongs to the number, so -2^2 is (−2)² = 4. Write -(2^2) to get −4.
Questions people ask
What is sin 30 on a calculator?
0.5 in degree mode. In radian mode the same input gives about −0.988, because 30 is read as 30 radians.
How do I type a square root or a cube root?
Use √ or sqrt for square roots (√16 = 4), ∛ or cbrt for cube roots, and root(x, n) for any other root: root(81, 4) = 3 and root(-8, 3) = −2. Raising to a fraction also works: 16^(1/4) = 2.
How do I calculate log base 2?
Type log2(8) or log(8, 2); both give 3. On its own, log(x) is base 10 and ln(x) is base e.
What is 52 choose 5?
2,598,960. Type ncr(52, 5). That is the number of different five-card poker hands.