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FREE SCIENTIFIC & ENGINEERING CALCULATOR ONLINE

Scientific and Engineering Calculator Online

Evaluate trigonometry, powers, roots, logarithms, factorials, combinations, integer functions, engineering constants, scientific notation, and engineering notation directly in your browser. Switch instantly between normal, scientific, and engineering notation while solving mathematical, scientific, and engineering calculations.

SCIENTIFIC & ENGINEERING WORKSPACE

Scientific engineering calculator

DEGNORMREAL
CALCREADY
RESULT0

Use the keypad or type directly. Press Enter or = to evaluate the expression.

QUICK INPUTS FOR SCIENCE & ENGINEERING

HOW THIS SCIENTIFIC AND ENGINEERING CALCULATOR HELPS

Use the right function, angle mode, and notation for technical work.

This engineering calculator is designed for focused numeric work. Enter a calculation, check DEG or RAD, choose normal, scientific, or engineering notation, then move to a dedicated SolveGrid workspace when the task needs a graph, matrix, data analysis, or unit conversion.

TRIGONOMETRY

Degrees and radians

Use sin, cos, tan, and their inverse functions. Choose DEG for degree-based questions and RAD for radian-based questions before evaluating.

POWERS AND LOGS

Roots, exponents, and logarithms

Evaluate powers, square roots, logarithms, natural logarithms, absolute value, and exponential expressions in one line.

COUNTING AND INTEGER TOOLS

Factorials, combinations, and GCD

Use functions such as fact(), ncr(), npr(), gcd(), and lcm() for counting problems and integer calculations.

ENGINEERING FORMAT

Scientific and engineering notation

Enter values such as 2.5e3, 12500, or 47e-6. Use MODE to display results in normal, scientific, or engineering notation where ENG keeps powers of ten in multiples of three.

MEMORY AND CONSTANTS

Reuse answers and values

Use Ans for the last result, store values in A, B, C, X, or Y, and insert selected constants from the TOOLS menu.

HISTORY

Review recent calculations

Open History to restore a recent expression and result. This is useful when comparing a sequence of calculations.

QUICK START

How to use the calculator

  1. Enter an expression.Use the keypad or type directly. Write multiplication as *, division as /, and exponents as ^.
  2. Set the correct angle mode.Open MODE before trigonometry. For example, sin(30) equals 0.5 only when the calculator is set to DEG.
  3. Evaluate and check.Press Enter or =. Read the expression again, especially brackets, powers, negative signs, and units outside the calculator.
  4. Choose an output format.Use NORM for everyday output, SCI for powers of ten, and ENG when you want engineering notation such as 12.5e3instead of 1.25e4.

WORKED INPUT EXAMPLES

Expressions you can try

ENGINEERING NOTATION

How engineering notation works

  1. Scientific notation uses any power of ten.For example, 12500 can be written as 1.25e4.
  2. Engineering notation uses powers in groups of three.The same value can be shown as 12.5e3, which matches kilo-style engineering units.
  3. Small technical values become easier to read.A capacitor value such as 47e-6 farads is often read as 47 microfarads in engineering work.

COMMON SEARCH QUESTIONS

Quick answers before you calculate

Check important results independently and follow your teacher, institution, or exam rules for calculator use. Numeric output can depend on the selected angle mode, notation, input order, and rounding. For technical values, open MODE and compare SCI with ENG so the result matches the notation style required by your problem.