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Scientific calculator guide

How to use the Scientific Calculator

The Scientific Calculator is built for expressions that need more than basic arithmetic: trig functions, logs, roots, powers, constants, parentheses, DEG/RAD angle mode, and reusable calculation history.

Open the scientific calculator

Quick start

  1. Type an expression directly or build it with the scientific keypad.
  2. Choose DEG or RAD before using sin, cos, tan, or inverse trig functions.
  3. Use parentheses when you need to control the order of operations.
  4. Press equals or Enter to calculate the expression.
  5. Use history to reload recent expressions or Copy result to paste the answer elsewhere.

DEG and RAD mode

DEG means degrees. Use DEG when a problem says angles like 30 degrees, 45 degrees, or 90 degrees. RAD means radians. Use RAD for expressions written in radians, such as many calculus, physics, and advanced math problems.

Choose the angle mode before calculating a trigonometry expression. For example, sin(30) in DEG mode returns 0.5, while RAD mode treats 30 as radians.

Supported expression types

Trig: sin, cos, tan, asin, acos, and atan.

Logs: log for base 10 and ln for natural log.

Roots: sqrt for square root and cbrt for cube root.

Powers: use x^y style expressions such as 2^5.

Constants: use pi and e inside expressions.

Grouping: use parentheses to control calculation order.

Keyboard examples

sin(30)+cos(60) Checks a simple trig identity in DEG mode.
log(1000) Finds the base 10 logarithm.
sqrt(25)+cbrt(8) Adds a square root and cube root result.
2^5 Calculates a power.
ln(e) Uses the natural log constant.

Examples from the scientific calculator

Trig identity check sin(30) + cos(60)

1

Common logarithm log(1000)

3

Roots together sqrt(25) + cbrt(8)

7

History, privacy, and copying

Recent scientific expressions stay visible in the history panel so you can compare answers and reopen an expression. This history is only kept in the current browser tab while you use the page.

Copy result copies the current displayed result to your clipboard. The calculator does not need an account, and the expression history is not sent to a server.