Scientific calculator
Work out trig, logs, powers and roots, with your history kept on screen.
- 100% free
- No sign-up
- Runs in your browser
How to use Scientific calculator
- Type or tap your sum
- Choose degrees or radians
- Press = or Enter
History
Your answers will appear here. Select one to use its sum again.
Next: Fraction calculator · Percentage calculator · Standard deviation calculator
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How to use Scientific calculator
Type or tap your sum
Use the keys, or type and paste straight into the display, such as 2(3+4)^2 or sin(30). Brackets and the usual order of operations work as on paper.
Choose degrees or radians
Pick the angle unit for sin, cos, tan and their inverses. In degrees, sin(30) is exactly 0.5.
Press = or Enter
The answer appears with up to 12 significant digits. Reuse it with Ans, store it in memory or pick it again from the history.
Why use Utils365
Keyboard and paste friendly
Type a whole expression, edit it with the cursor and press Enter. The live preview shows the answer before you finish.
Written-maths precedence
Powers before multiplication, −2² is −4, 2^3^2 is 512, and 2π or 3(4+5) multiply without a × sign.
Memory and history
M+, M−, MR and MC work as on a desk calculator, and your last 20 answers stay listed for reuse.
Private and offline
Everything is worked out in your browser. Nothing you type is sent anywhere, and it keeps working without a connection.
Frequently asked questions
How do I switch between degrees and radians?
Choose Degrees or Radians in the options. It changes sin, cos and tan and their inverses only. sin(90) is 1 in degrees, while sin(π/2) gives 1 in radians.
Why is −2² equal to −4 and not 4?
Powers are worked out before the minus sign, as in written maths, so −2² means −(2²) = −4. Type (−2)² to square minus two and get 4.
How do I type a power or a root?
Use the xʸ key or the ^ character: 2^10 is 1,024. For roots use √ or ∛, or type sqrt( and cbrt(. A fourth root is a power of 0.25: 81^0.25 is 3.
What does the % key do?
It divides by 100, so 15% is 0.15 and 200×15% is 30. To add 15% to 200, type 200×1.15 or 200+200×15%.
What is the largest factorial it can work out?
170! is about 7.26 × 10³⁰⁶, the largest that fits in a standard number. Factorials only work for whole numbers from 0, and 0! is 1.
What is the difference between log and ln?
log is the logarithm to base 10, so log(1000) is 3. ln is the natural logarithm to base e (about 2.71828), so ln(e) is 1.
How do Ans and memory work?
Ans holds the last answer, so after 6×7 = 42, typing Ans÷2 gives 21. M+ adds the current answer to memory, M− subtracts it, MR inserts the stored value and MC clears it.