Calculadora Científica Online Grátis
Expression parser with trig, log, exp, history & DEG/RAD toggle
This Scientific Calculator evaluates full mathematical expressions including trigonometric functions, logarithms, exponents, and constants like π and e — all from a single input field. It keeps a history of past calculations and lets you toggle between degree and radian mode. Students, engineers, and teachers use it to evaluate complex expressions without a physical calculator.
Frequently Asked Questions
Sobre Esta Calculadora
A scientific calculator goes beyond the four basic operations to handle the mathematical functions used in algebra, trigonometry, calculus, physics, and engineering. This web-based version parses full expressions — you can type "sin(45) * sqrt(2)" and get an instant result — rather than requiring you to press keys in sequence like a physical calculator.
Key features include support for sin, cos, tan and their inverses, natural and base-10 logarithms, exponential functions, square roots, and the constants π and e. The DEG/RAD toggle ensures trig functions use the correct angle unit for your application. Calculation history lets you review and reuse previous entries.
This calculator is particularly useful for physics problems requiring radian-mode trig, chemistry stoichiometry involving logarithmic pH calculations, and math coursework where you need to verify hand-computed answers quickly.
Projetos mais avançados nas lógicas das engenharias requerem painel adequado lidando também via uso das fórmulas para trigonometria etc.
Exemplo Resolvido
Evaluating sin(30°) + log(100)
Entradas:
- Expression: sin(30) + log(100)
- Mode: DEG (degrees)
Passo a Passo:
- Calculate sin(30°) = 0.5 (30 degrees is exactly one-half)
- Calculate log₁₀(100) = 2 (because 10² = 100)
- Add the results: 0.5 + 2 = 2.5