Calculator — A calculator that does the ordinary arithmetic you need every day, and the scientific functions you reach for less often — in the same place.
Every expression is calculated in your browser. Nothing is typed, logged or sent anywhere — the tool works offline.
Was Calculator useful?
What is Calculator?
A calculator that does the ordinary arithmetic you need every day, and the scientific functions you reach for less often — in the same place.
Type an expression directly, or tap the keypad. It understands the usual conventions: brackets before multiplication, exponents before unary minus, and % as a percentage rather than a remainder.
How to use it
-
Enter an expression
Type into the field, or tap digits and operators on the keypad below it.
-
Pick your angle unit
Trigonometric functions read degrees by default. Switch to radians when your textbook uses them.
-
Read the result
The answer is shown beneath, with long values trimmed of floating-point noise.
-
Reuse it
Recent results stay in the history strip so you can pick up where you left off.
Examples
Everyday arithmetic
Brackets first, then multiplication, then subtraction.
(19.99 + 5) * 1.2
Result: 29.988
A scientific expression
Functions compose like ordinary maths.
sin(30) + log(1000) + sqrt(144)
Result: 15.5
Powers, roots and percentages
Exponents read right to left, and % divides by 100.
2^3^2 · sqrt(2)^2 · 200*10%
Result: 512 · 2 · 20
Frequently asked questions
Related tools
Statistics Calculator
Compute mean, median, mode, range, variance, standard deviation, and quartiles from a list of numbers.
Percentage Calculator
Three percentage tools in one: percent of a value, ratio as a percent, and percent change.
Random Number Generator
Pick a random number, roll dice, or shuffle a list. Cryptographically secure, runs locally.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal. Type in any field and the other three update live.
Last reviewed: 2026-10-06