Math Solver Calculator
Scientific Calculator works out Result and Full-precision result from Mode, Expression and Angle unit. The default figures on this page give result of 4.5; change any entry and the result, the working and the sources update together.
Your figures
Updates as you typeHow this is worked out
5 steps
- Read as: sin(30) + sqrt(16) with angles in degrees.
- 1. sin(30) = 0.5 → 0.5 + sqrt(16)
- 2. sqrt(16) = 4 → 0.5 + 4
- 3. 0.5 + 4 = 4.5 → 4.5
- Result to 10 significant figures: 4.5
Step-by-step workingtable
Its 9 worked examples are re-run on every release, last on 15 September 2026. What changed
Sources and references
5 sources
What the Scientific Calculator calculates
Evaluates a scientific expression with trigonometric, inverse and hyperbolic functions, logarithms to any base, roots, powers, factorials and combinatorics, honouring standard operator precedence and an explicit angle unit; also tabulates y = f(x) for graphing, solves f(x) = target for x by bisection, and simplifies and differentiates an expression symbolically.
How to use this Scientific Calculator
Enter Mode, Expression, Angle unit and Significant figures. Result updates as you type, and “Use a worked example” loads checked figures you can adjust. Change one figure at a time to see what drives the result.
How the result is worked out
Open “How this is worked out” beside the result for the step-by-step calculation behind Result, Full-precision result and Result with separators.
The method follows NIST Digital Library of Mathematical Functions, Chapter 4 (Elementary Functions), Abramowitz & Stegun, Handbook of Mathematical Functions, Chapter 4, ECMA-262, ECMAScript Language Specification, §21.3 The Math Object, Burden & Faires, Numerical Analysis, §2.1 The Bisection Method and Stewart, Calculus: Early Transcendentals, Chapter 3 (Differentiation Rules).
sin 30 degrees example
With Expression: sin(30), Angle unit: deg, the calculator returns Result: 0.5. This example is checked against an independent source in the test suite.
What you can compare
Change one input at a time to see how it affects Result, Full-precision result and Result with separators. The inputs you can vary are Mode, Expression, Angle unit, Significant figures, Value of x (optional) and Previous answer (optional).
Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.
See something wrong? Report a problem with this calculator
Frequently asked questions
What information do I need for the Scientific Calculator?
You need Mode, Expression, Angle unit, Significant figures, Value of x (optional), Previous answer (optional), Solve for f(x) = and Window / bracket: smallest x. The page opens with default figures that give result of 4.5, so you can see the scale before entering your own.
What does this Scientific Calculator show?
It shows Result, Full-precision result, Result with separators, Scientific notation, Expression as parsed, Angle unit, Result read as an angle, in degrees and Result read as an angle, in radians, with the working and any warnings for your entries.
Can I check how the Scientific Calculator result was calculated?
Yes. The “How this is worked out” section shows the calculation steps, and the sources section identifies the references used for the method.