The Toolbox

Búsqueda y Calculadora de Fórmulas de Física Gratis

Busca más de 80 fórmulas de física por tema con definiciones de variables y una calculadora que despeja cualquier variable. Gratis, rápida y funciona totalmente en tu navegador sin necesidad de registrarse.

Actualizado

Share:
Home/Utility Tools/Physics Formula Lookup & Calculator

Physics Formula Lookup & Calculator

Search 80+ physics formulas organized by topic — mechanics, waves, thermodynamics, electricity, and optics. Includes a solve-for-any-variable calculator.

35 formulas

Velocity

Mechanics
v = d / t

Velocity equals displacement divided by time.

v = Velocity (m/s)
d = Displacement (m)
t = Time (s)

Acceleration

Mechanics
a = Δv / t

Acceleration is the change in velocity over time.

a = Acceleration (m/s²)
Δv = Change in velocity (m/s)
t = Time (s)

Kinematic Equation (v = u + at)

Mechanics
v = u + a·t

Final velocity from initial velocity, acceleration, and time.

v = Final velocity (m/s)
u = Initial velocity (m/s)
a = Acceleration (m/s²)
t = Time (s)

Kinematic Equation (s = ut + ½at²)

Mechanics
s = u·t + ½·a·t²

Displacement from initial velocity, acceleration, and time.

s = Displacement (m)
u = Initial velocity (m/s)
a = Acceleration (m/s²)
t = Time (s)

Newton's Second Law

Mechanics
F = m·a

Force equals mass times acceleration.

F = Force (N)
m = Mass (kg)
a = Acceleration (m/s²)

Weight

Mechanics
W = m·g

Weight equals mass times gravitational acceleration (g ≈ 9.81 m/s²).

W = Weight (N)
m = Mass (kg)
g = Gravitational acceleration (m/s²)

Kinetic Energy

Mechanics
KE = ½·m·v²

Kinetic energy of a moving object.

KE = Kinetic energy (J)
m = Mass (kg)
v = Velocity (m/s)

Gravitational Potential Energy

Mechanics
PE = m·g·h

Energy stored due to an object's height above a reference point.

PE = Potential energy (J)
m = Mass (kg)
g = Gravity (m/s²)
h = Height (m)

Work

Mechanics
W = F·d·cos(θ)

Work done by a force over a displacement at angle θ.

W = Work (J)
F = Force (N)
d = Displacement (m)
θ = Angle (°)

Power

Mechanics
P = W / t

Power is work done per unit time.

P = Power (W)
W = Work (J)
t = Time (s)

Momentum

Mechanics
p = m·v

Linear momentum equals mass times velocity.

p = Momentum (kg·m/s)
m = Mass (kg)
v = Velocity (m/s)

Centripetal Acceleration

Mechanics
a_c = v² / r

Centripetal acceleration for circular motion.

a_c = Centripetal acceleration (m/s²)
v = Speed (m/s)
r = Radius (m)

Newton's Law of Gravitation

Mechanics
F = G·m₁·m₂ / r²

Gravitational force between two masses. G = 6.674 × 10⁻¹¹ N·m²/kg².

F = Force (N)
G = Gravitational constant (N·m²/kg²)
m₁ = Mass 1 (kg)
m₂ = Mass 2 (kg)
r = Distance (m)

Friction Force

Mechanics
f = μ·N

Friction force equals coefficient of friction times normal force.

f = Friction force (N)
μ = Coefficient of friction (dimensionless)
N = Normal force (N)

Wave Speed

Waves & Sound
v = f·λ

Wave speed equals frequency times wavelength.

v = Wave speed (m/s)
f = Frequency (Hz)
λ = Wavelength (m)

Period and Frequency

Waves & Sound
T = 1 / f

Period is the reciprocal of frequency.

T = Period (s)
f = Frequency (Hz)

Doppler Effect

Waves & Sound
f_obs = f_s · (v + v_obs) / (v + v_s)

Observed frequency when source or observer is moving. Use + for approaching, − for receding.

f_obs = Observed frequency (Hz)
f_s = Source frequency (Hz)
v = Speed of sound (m/s)
v_obs = Observer speed (m/s)
v_s = Source speed (m/s)

Snell's Law

Optics
n₁·sin(θ₁) = n₂·sin(θ₂)

Relates angles of incidence and refraction at a boundary between media.

n₁ = Refractive index 1 (dimensionless)
θ₁ = Angle of incidence (°)
n₂ = Refractive index 2 (dimensionless)
θ₂ = Angle of refraction (°)

Thin Lens Equation

Optics
1/f = 1/d_o + 1/d_i

Relates focal length to object and image distances.

f = Focal length (m)
d_o = Object distance (m)
d_i = Image distance (m)

Magnification

Optics
m = -d_i / d_o = h_i / h_o

Lateral magnification from image and object distances or heights.

m = Magnification (dimensionless)
d_i = Image distance (m)
d_o = Object distance (m)
h_i = Image height (m)
h_o = Object height (m)

Ideal Gas Law

Thermodynamics
PV = nRT

Relates pressure, volume, moles, and temperature of an ideal gas. R = 8.314 J/(mol·K).

P = Pressure (Pa)
V = Volume (m³)
n = Moles (mol)
R = Gas constant (J/(mol·K))
T = Temperature (K)

Heat Transfer (Q = mcΔT)

Thermodynamics
Q = m·c·ΔT

Heat absorbed or released equals mass times specific heat times temperature change.

Q = Heat (J)
m = Mass (kg)
c = Specific heat (J/(kg·K))
ΔT = Temperature change (K)

Linear Thermal Expansion

Thermodynamics
ΔL = α·L₀·ΔT

Change in length due to temperature change. α is the linear expansion coefficient.

ΔL = Change in length (m)
α = Expansion coefficient (1/K)
L₀ = Original length (m)
ΔT = Temperature change (K)

Thermal Efficiency

Thermodynamics
η = W / Q_h = 1 - T_c / T_h

Efficiency of a heat engine (Carnot limit).

η = Efficiency (dimensionless)
T_c = Cold temperature (K)
T_h = Hot temperature (K)

Ohm's Law

Electricity
V = I·R

Voltage equals current times resistance.

V = Voltage (V)
I = Current (A)
R = Resistance (Ω)

Electric Power

Electricity
P = V·I = I²·R = V²/R

Power dissipated in an electrical component.

P = Power (W)
V = Voltage (V)
I = Current (A)
R = Resistance (Ω)

Resistors in Series

Electricity
R_total = R₁ + R₂ + ... + Rₙ

Total resistance of resistors connected in series.

R_total = Total resistance (Ω)
R₁, R₂ = Individual resistances (Ω)

Resistors in Parallel

Electricity
1/R_total = 1/R₁ + 1/R₂ + ...

Total resistance of resistors connected in parallel.

R_total = Total resistance (Ω)
R₁, R₂ = Individual resistances (Ω)

Capacitor Charge

Electricity
Q = C·V

Charge stored in a capacitor equals capacitance times voltage.

Q = Charge (C)
C = Capacitance (F)
V = Voltage (V)

Coulomb's Law

Electricity
F = k·q₁·q₂ / r²

Electrostatic force between two charges. k = 8.99 × 10⁹ N·m²/C².

F = Force (N)
k = Coulomb constant (N·m²/C²)
q₁ = Charge 1 (C)
q₂ = Charge 2 (C)
r = Distance (m)

Electric Field

Electricity
E = F / q = k·Q / r²

Electric field strength at a distance r from charge Q.

E = Electric field (N/C)
F = Force (N)
q = Test charge (C)

Mirror Equation

Optics
1/f = 1/d_o + 1/d_i

Relates focal length to object and image distances for mirrors.

f = Focal length (m)
d_o = Object distance (m)
d_i = Image distance (m)

Index of Refraction

Optics
n = c / v

Refractive index is the ratio of speed of light in vacuum to speed in medium.

n = Refractive index (dimensionless)
c = Speed of light (m/s)
v = Speed in medium (m/s)

Mass-Energy Equivalence

Modern Physics
E = m·c²

Einstein's mass-energy equivalence. c = 3 × 10⁸ m/s.

E = Energy (J)
m = Mass (kg)
c = Speed of light (m/s)

Photon Energy

Modern Physics
E = h·f

Energy of a photon. h = 6.626 × 10⁻³⁴ J·s (Planck constant).

E = Energy (J)
h = Planck constant (J·s)
f = Frequency (Hz)

Related Tools

Essay Outline GeneratorReference FormatterScientific Calculator

Preguntas Frecuentes

¿Qué es el Physics Formula Lookup & Calculator?

El Physics Formula Lookup & Calculator es una herramienta en línea gratuita que permite buscar más de 80 fórmulas de física por tema, con definiciones de variables y una calculadora que despeja cualquier variable. Funciona completamente en tu navegador, sin necesidad de instalación ni registro.

¿Qué temas abarca?

Mecánica, ondas, termodinámica, electricidad y magnetismo, y óptica, cubriendo la mayor parte de la física de secundaria e introductoria de universidad.

¿Puedo usarlo como calculadora?

Sí — para la mayoría de las fórmulas puedes introducir los valores conocidos y despejar cualquier variable desconocida.

¿Es gratuito?

Sí, completamente gratuito.

¿Están seguros mis datos con esta herramienta?

Por supuesto. El Physics Formula Lookup & Calculator procesa todo del lado del cliente en tu navegador. No se sube ni se almacena ningún dato en ningún servidor. Tu contenido permanece privado en tu dispositivo en todo momento.

¿Funciona el Physics Formula Lookup & Calculator en dispositivos móviles?

Sí, el Physics Formula Lookup & Calculator es totalmente adaptable y funciona en smartphones y tablets. Puedes usarlo en cualquier dispositivo con un navegador web moderno, sin necesidad de descargar ninguna aplicación.

¿Necesito crear una cuenta para usar esta herramienta?

No se necesita ninguna cuenta ni registro. Solo abre el Physics Formula Lookup & Calculator en tu navegador y empieza a usarlo de inmediato. No hay muros de registro ni restricciones de uso.

¿Cómo uso el Physics Formula Lookup & Calculator?

Solo introduce tu entrada en el campo correspondiente, ajusta la configuración a tu gusto y la herramienta la procesará al instante. Luego puedes copiar el resultado al portapapeles o descargarlo.

¿Qué navegadores son compatibles?

El Physics Formula Lookup & Calculator funciona en todos los navegadores modernos, incluidos Chrome, Firefox, Safari, Edge y Opera. Para una mejor experiencia, usa la última versión de tu navegador preferido.

Herramientas Relacionadas

Generador de Contraseñas Seguras Gratis

Genera contraseñas seguras y aleatorias con opciones personalizables. Gratis, rápido y funciona por completo en tu navegador sin necesidad de registro.

Generador de UUID/GUID Gratis

Genera identificadores únicos universales (UUID/GUID). Gratis, rápido y funciona por completo en tu navegador sin necesidad de registro.

Generador de Códigos QR Gratis Online

Genera códigos QR para URLs, texto, credenciales WiFi y más. Gratis, rápido y funciona por completo en tu navegador sin necesidad de registro.

Formateador y Validador de JSON Gratis

Formatea, valida y embellece datos JSON con resaltado de sintaxis y detección de errores. Gratis, rápido y funciona por completo en tu navegador sin necesidad de registro.

Ver todas las Utilidades →

Acerca de Búsqueda y Calculadora de Fórmulas de Física Gratis

Búsqueda y Calculadora de Fórmulas de Física Gratis es una herramienta gratuita que funciona en el navegador, dentro de nuestra colección de Utilidades. Todo se ejecuta localmente en tu dispositivo: sin subir archivos, sin registro y con tus datos siempre privados.

physics formulasphysics calculatorformula referencephysics equationsfree physics formula lookup & calculatoronline physics formula lookup & calculatorphysics formula lookup & calculator online freebest physics formula lookup & calculatoronline toolfree utility