Advanced Online Calculator
Quadratic equation: ax² + bx + c = 0
Compound interest
Advanced Online Calculator - Scientific, Percentage, Unit Converter, Statistics and More
This free advanced online calculator puts the tools people reach for every day on one page: a scientific calculator with history, percentage calculator, unit converter, hex and binary converter, statistics, date calculator, quadratic equation solver and compound interest calculator. There is nothing to download, and it works in your browser on mobile and desktop.
What You Can Calculate
- Scientific: brackets, powers, roots, sin, cos, tan, inverse functions, log, ln, factorial, pi, e, memory and answer history.
- Percentage: X% of Y, X is what percent of Y, and percentage increase or decrease.
- Units: length, weight, area, volume, speed, time, data and temperature, including tola, marla and kanal.
- Programmer: decimal, hex, binary and octal conversion (hex to decimal, binary to decimal).
- Statistics: mean, median, mode, range, variance and standard deviation.
- Date: days between two dates and adding or subtracting days.
- Equations: quadratic roots (including complex) and compound interest.
Order Of Operations (BODMAS / PEMDAS)
The calculator solves brackets first, then powers and roots, then multiplication and division, then addition and subtraction. For example, 2 + 3 x 4 = 14, not 20, and (2 + 3) x 4 = 20.
Scientific Functions Quick Guide
| Function | Example | Result |
|---|---|---|
| Square root | sqrt(144) | 12 |
| Power | 2^10 | 1024 |
| Sine (degrees) | sin(30) | 0.5 |
| Logarithm base 10 | log(1000) | 3 |
| Natural log | ln(e) | 1 |
| Factorial | 5! | 120 |
| Percent | 200*15% | 30 |
Common Unit Conversions
| From | To | Value |
|---|---|---|
| 1 inch | cm | 2.54 |
| 1 mile | km | 1.609344 |
| 1 kg | pounds | 2.20462 |
| 1 tola | grams | 11.664 |
| 1 marla | sq ft | 272.25 |
| 0 C | F | 32 |
Useful Formulas
- Percentage change = (New - Old) / Old x 100
- Quadratic roots = (-b +/- sqrt(b² - 4ac)) / 2a
- Compound interest = P x (1 + r/n)^(n x t)
- Standard deviation (population) = square root of the average squared distance from the mean
Tips For Accurate Results
- Check DEG or RAD before using trigonometry; most school problems use degrees.
- Use brackets whenever the order could be unclear.
- For long lists in Statistics, paste straight from a spreadsheet column.
- Data units here use 1024 (binary) steps, so 1 KB = 1024 bytes.
Frequently Asked Questions (FAQs)
Q: What is the difference between a scientific and a basic calculator?
A: A basic calculator handles add, subtract, multiply and divide. A scientific calculator adds powers, roots, logarithms, trigonometry, factorials and brackets, and follows the correct order of operations.
Q: How do I switch between degrees and radians?
A: Use the DEG/RAD button in the Scientific tab. Trigonometric functions like sin, cos and tan use the selected mode.
Q: Does this calculator follow BODMAS / PEMDAS?
A: Yes. Brackets are solved first, then powers, then multiplication and division, then addition and subtraction, working left to right for equal priority.
Q: How do I convert hex to decimal or binary to decimal?
A: Open the Programmer tab, type the number, choose its base (2, 8, 10 or 16) and see all four bases at once.
Q: How do I calculate standard deviation online?
A: Open the Statistics tab, paste your numbers separated by commas, spaces or new lines, and read mean, median, mode, variance and both sample and population standard deviation.
Q: Can I solve a quadratic equation here?
A: Yes. Open the Equations tab, enter a, b and c, and get the discriminant and both roots, including complex roots.
Q: Can I calculate days between two dates?
A: Yes. Use the Date tab to find the number of days between two dates or to add or subtract days from a date.
Q: Is my data saved or sent anywhere?
A: No. All calculations run in your browser and nothing is uploaded.
Q: Does it work on mobile?
A: Yes. The layout is responsive, so every tab works on phones, tablets and computers.
Q: Is this advanced calculator free?
A: Yes. It is completely free, with no signup and no download.