SolveCalcPro

Free Online Scientific Calculator

Type with the keypad or switch on Code Mode and enter math like sin(30)+2^3. No sign-up, and everything runs in your browser.

Your free calc solver for school, home and money maths.

Start calculating Browse 52 math tools

Illustration of a scientific calculator with a ruler, protractor and graph
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What this scientific calculator can do

SolveCalcPro handles everything from basic arithmetic to trigonometry and logarithms. Use the keypad for quick sums, or open Shift for inverse functions such as sin⁻¹ and for cube roots and powers of 10. Results update as you type, and every answer is added to your history so you can reuse it with a click or with ans.

  • Trigonometry: sin, cos, tan and their inverses, in degrees or radians.
  • Logarithms and powers: log (base 10), ln (natural log), square, cube, xʸ, roots and eˣ.
  • Everyday math: percentages, factorials, parentheses, memory (MC, MR, M+, M−) and the last answer.
  • Privacy: calculations never leave your device.

How to use Code Mode

Turn on Code Mode above the display, click the screen and type your expression using normal keyboard characters, then press Enter. Use ^ for powers, * and / for multiply and divide, and function names with brackets.

You typeMeaningResult
sin(30)Sine of 30° (DEG mode)0.5
sqrt(144)+2^3Square root plus a power20
200*15%15% of 20030
5!Factorial120
log(1000)Base-10 logarithm3
2piImplicit multiplication with π6.2832 (RAD)

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Learn the math

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Test yourself with free quizzes

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Frequently asked questions

Is SolveCalcPro really free?

Yes. There is no sign-up, no download and no paywall. The site is supported by advertising.

What is the difference between DEG and RAD?

DEG treats angles in degrees (a full circle is 360) and RAD treats them in radians (a full circle is 2π). Use DEG for school geometry and RAD for calculus and physics. Try sin(30) in DEG and sin(pi/6) in RAD: both equal 0.5.

What is Code Mode?

Code Mode lets you type a whole expression on your keyboard, such as sqrt(64)+5!, instead of pressing keys one at a time. Press Enter to solve it. It is the fastest way to enter long calculations on a laptop.

Which functions are supported?

Addition, subtraction, multiplication, division, powers, square and cube roots, factorials, percentages, sin, cos, tan and their inverses, base-10 and natural logarithms, π, e and the last answer (ans).

Are my calculations saved or uploaded?

No. Everything runs in your browser. Your history is stored only on your device and you can clear it at any time.

What is a calc solver?

An online calculator that can also solve problems, such as equations, fractions and percentages, ideally showing the steps. People search for it as calc solver, calcsolver, calc solve or solver calc. SolveCalcPro is a free calc solver: see our guide, What Is a Calc Solver?

Is SolveCalcPro the same as SolveCalc or CalcSolver?

No. SolveCalcPro is an independent site run by Hindustan Prime. It is not affiliated with other websites that use similar names.

Does it work on a phone or Chromebook?

Yes. The layout adapts to any screen size and works in current versions of Chrome, Safari, Edge and Firefox.

Results are for education and planning. See our disclaimer and editorial policy.