Science cluster
Physics Calculators
Physics calculators for forces, motion, gravity, energy, radiation, circuits, optics, and other quantitative models used across science and engineering.
Top calculators
A short starting set for the most common physics calculators workflows.
Rocket Equation Simulator
Interactive rocket equation calculator with mass burn, velocity, and energy tracking on a responsive canvas.
Surface Gravity Calculator - Planetary Weight Comparison
Determine the gravitational acceleration on any planet or moon using its mass and radius. Explore how surface gravity shapes planetary environments.
Railgun Launch Energy, Current, and Recoil Calculator
Estimate an electromagnetic railgun projectile's kinetic and electrical energy, acceleration force, rail current, capacitor energy, and launcher recoil from launch inputs.
Resistive Heating Calculator: Power and Energy From Voltage or Current
Estimate resistive heating power and energy for a resistive load from voltage or current, resistance, and time.
Constant-Force Mechanical Work Calculator
Calculate constant-force mechanical work in joules from force, displacement, and angle, with optional average power and ideal speed-from-rest estimates.
Inclined Plane Friction Forces Calculator | Normal Force & Acceleration
Calculate downslope force, normal force, friction, net force, and acceleration for a block on an inclined plane.
Parachute Descent Rate Calculator - Estimate Landing Speed
Estimate the terminal velocity and landing energy of a parachutist based on canopy size, mass, and drag coefficient.
AC RMS Voltage Calculator | Sine-Wave Peak, Peak-to-Peak, RMS & Rectified Voltage
Convert an ideal sine-wave voltage between peak, peak-to-peak, RMS, and average rectified values, with optional resistive-load power calculation.
All calculators in this cluster
Browse 93 calculators matched to this topic, or return to the Science category.
AC RMS Voltage Calculator | Sine-Wave Peak, Peak-to-Peak, RMS & Rectified Voltage
Convert an ideal sine-wave voltage between peak, peak-to-peak, RMS, and average rectified values, with optional resistive-load power calculation.
Agile Sprint Velocity Calculator | Story Points per Sprint
Calculate average sprint velocity from completed story points and number of sprints. Use it for sprint planning, backlog forecasting, and agile capacity discussions.
Air Filter Pressure Drop Calculator - HVAC System Planning
Estimate air filter pressure drop for HVAC systems from airflow, filter area, and MERV rating, in both inches of water column and pascals, with a worked example.
Alcubierre Warp Energy Calculator | Negative-Energy Magnitude
Calculate the simplified negative-energy magnitude and mass equivalent for an Alcubierre warp bubble from its speed factor, radius, and wall thickness.
Alfvén Speed Calculator for Magnetized Plasma
Estimate Alfvén speed from magnetic field strength and plasma mass density, with preset values for the solar corona, magnetosphere, tokamak edge plasma, and interstellar medium.
Antenna Length Calculator for Quarter-, Half-, and Full-Wave Elements
Calculate wavelength and practical quarter-, half-, eighth-, and full-wave antenna element lengths from frequency and velocity factor.
Apparent Weight in Elevator Calculator – Scale Reading & Acceleration
Calculate apparent weight in an accelerating elevator using N = m(g ± a). Enter mass with acceleration to get scale reading, or mass with apparent weight to...
Asteroid Impact Energy Calculator: Joules, TNT Yield and Crater Size
Calculate an asteroid’s mass, momentum, kinetic impact energy, TNT yield, approximate crater diameter and recurrence interval from its diameter, density and speed.
Atmospheric Scale Height Calculator | Estimate Density Falloff with Altitude
Estimate atmospheric scale height from temperature, molar mass, and gravity, then gauge how quickly density falls with altitude in an isothermal atmosphere.
Ballistic Trajectory Calculator with Drag and Wind
Simulate a ballistic trajectory with drag and wind by entering mass, launch speed, angle, drag coefficient, area, air density, gravity, and time step, then review flight time, range, and peak height.
Banked Curve Calculator: Banking Angle and Safe Speed Range
Find a banked curve's friction-free design angle and friction-limited speed range from speed, radius, gravity, and the coefficient of static friction.
Bethe–Bloch Energy Loss Calculator (Stopping Power & Range)
Calculate charged-particle stopping power, linear energy loss, and a rough range estimate in matter with a simplified Bethe–Bloch model. Compare how particle charge, energy, and material properties change −dE/dx.
Binary Inspiral Merger Time Calculator for Circular Compact Binaries
Estimate how long two compact objects in a circular orbit take to merge through gravitational-wave emission using the Peters formula, with masses in M☉ and separation in km.
Biogas Production Calculator | Methane and Energy Output
Estimate daily biogas volume, methane generation, and energy yield from anaerobic digestion inputs: feedstock mass, volatile solids, gas yield, and methane fraction.
Bioluminescent Algae Display Cycle Planner for Nightly Glow Shows
Plan light, dark, and show timing for bioluminescent algae exhibits. Estimate when lights should start, when darkness should begin, expected glow strength, daily energy use, and an hourly CSV schedule.
BIP39 Seed Phrase Brute Force Time Calculator | Estimate Recovery Search Time
Estimate how long it could take to search a partially known BIP39 seed phrase from phrase length, known words, and guesses per second. Useful for wallet recovery planning and seed-phrase security.
Capacitor Energy Calculator: Joules, Charge and Derating
Find the energy stored in a capacitor with E = 1/2 C V squared. Handles pF to F, gives charge, watt-hours, RC charging loss and voltage derating.
Capillary Rise Calculator | Meniscus Height in a Tube
Calculate the signed capillary rise or depression in a cylindrical tube from surface tension, contact angle, tube radius, and liquid density.
Coherent Elastic Neutrino–Nucleus Scattering Cross Section Calculator
Estimate the leading-order CEvNS cross section from neutrino energy, atomic number, neutron number, and target mass using a Standard Model baseline.
Compressed Air Energy Storage Calculator | Estimate CAES Output
Estimate the usable energy and average discharge power of a compressed air energy storage system from cavern volume, pressure limits, efficiency, and discharge time.
Constant-Force Mechanical Work Calculator
Calculate constant-force mechanical work in joules from force, displacement, and angle, with optional average power and ideal speed-from-rest estimates.
Coriolis Force Calculator and Motion Simulator
Interactive Coriolis force calculator that traces a moving mass on a rotating Earth, with latitude, heading, timestep, and duration controls plus kinetic-energy feedback.
Cyclotron Frequency Calculator | qB/(2πm) in Hz
Calculate a charged particle’s classical cyclotron frequency in hertz from charge magnitude, mass, and magnetic-field strength.
Data Center Cooling Efficiency Calculator - Reduce Energy Use
Estimate annual cooling costs in your server room or data center. Enter IT load, PUE, and electricity rate to see how efficiency improvements lower bills.
Data Center PUE Calculator - Calculate Facility Energy Overhead
Calculate data center Power Usage Effectiveness (PUE) from total facility and IT equipment energy, and see non-IT overhead in kWh.
Desalination Energy Cost Calculator | kWh per m³ and Daily Cost
Estimate desalination electricity use in kWh/day and kWh/m³, plus daily power cost, from water volume, salinity, efficiency, and electricity price.
Drone Payload Flight Endurance and Reserve Analyzer
Estimate multirotor flight endurance, still-air range, and route reserve margins for three payload weights using battery, temperature, power, speed, and wind inputs.
Electric Aircraft Range Calculator | Estimate Cruise Range from Battery Energy
Estimate how far an electric aircraft can cruise from battery capacity, reserve, cruise power, and cruise speed.
Electric Power Calculator: Solve Voltage, Current, Resistance, and Watts
Use this electric power calculator to solve for missing voltage, current, resistance, or watts in a simple circuit, and see the Ohm's-law relationships behind each result.
Electron Drift Velocity Calculator
Solve for drift velocity, current, carrier density, charge, or cross-sectional area using v = I / (n q A).
Exoskeleton Lift Endurance Calculator for Repetitive Lifting
Estimate how long a powered exoskeleton can assist repeated vertical lifts from load mass, lift height, lift rate, actuator efficiency, and battery capacity.
Feshbach Resonance Scattering Length Calculator for Ultracold Atoms
Estimate the scattering length and zero-energy elastic cross-section near a Feshbach resonance from background scattering length, resonance width, resonance position, and magnetic field.
Firearm Recoil Calculator | Estimate Free Recoil Energy
Calculate free recoil energy, recoil velocity and impulse from bullet weight, muzzle velocity, powder charge and firearm weight, with an adjustable gas velocity.
Flat-Space False-Vacuum Bubble Nucleation Calculator
Calculate flat-space thin-wall false-vacuum bubble radius, bounce action, and nucleation rate density from wall tension, vacuum-energy difference, and prefactor.
Fuel Injector Size Calculator for Horsepower, BSFC, and Flow Rating
Estimate the injector flow rating each cylinder needs from horsepower, BSFC, injector count, duty cycle, and fuel type, with results in lb/hr and cc/min.
Gemstone Carat Weight Calculator - Estimate Faceted Stone Weight
Estimate a faceted gemstone's carat weight from its length, width, depth, specific gravity, and shape factor.
Graphene Sheet Resistance Calculator | Estimate Rs from Density, Mobility, and Temperature
Estimate graphene sheet resistance and conductivity from carrier density, mobility, and temperature using a Drude-style model with temperature scaling.
Gravitational Wave Memory Step Calculator | Estimate a Permanent Strain Step
Estimate the permanent strain step from nonlinear gravitational-wave memory using total mass, radiated energy fraction, and luminosity distance.
Greenhouse Thermal Mass Calculator - Store Heat Efficiently
Estimate how much thermal mass you need to stabilize temperatures in a greenhouse and calculate the energy it can store.
Gyroscope Precession Calculator: Calculate Spin Stability & Precession Rate
Calculate gyroscope precession rate, torque, and wobble period from rotor mass, inertia, spin speed, and tilt angle with this expert calculator.
Heisenberg Uncertainty Calculator | Δx to minimum Δp
Enter a position uncertainty Δx in meters to estimate the smallest momentum uncertainty allowed by Δx·Δp ≥ ħ/2.
Hohmann Transfer Orbit Calculator: Delta-V, Time, Phase Angle
Compute Hohmann transfer delta-v, coast time, synodic period and departure phase angle from orbit radii or altitudes, with JPL gravitational parameters.
Home Automation Energy Savings Calculator | Estimate Annual kWh Reduction
Estimate the monthly and annual electricity reduction from smart-home automation using your current monthly kWh use and expected efficiency percentage.
Home EV Charging Load, Charge-Time & Off-Peak Cost Planner
Estimate a home EV charger's continuous circuit load, compare it with spare panel capacity, calculate time to a target battery charge, and project standard versus off-peak charging costs.
Home Office Electricity Cost Calculator – Estimate Monthly Desk Power Use
Estimate the monthly electricity cost of your home office by combining active wattage, standby draw, work hours, and your local kWh rate.
Hot Air Balloon Lift Calculator – Estimate Buoyant Lift and Payload Margin
Estimate hot-air-balloon buoyant lift and payload margin from envelope volume, ambient and envelope temperatures, equipment, fuel, payload, and reserve percentage.
Hydrostatic Pressure Calculator | Pressure at Depth in a Liquid Column
Calculate hydrostatic pressure from liquid density, depth, and gravity, then view the result in kPa and psi for tanks, wells, dives, and other still liquid columns.
Hyperloop Tube Pumping Power Calculator for Vacuum Maintenance
Estimate the continuous pumping power and daily electricity cost needed to keep a Hyperloop tube at low pressure, based on tube size, leak rate, pump efficiency, and electricity price.
Inclined Plane Friction Forces Calculator | Normal Force & Acceleration
Calculate downslope force, normal force, friction, net force, and acceleration for a block on an inclined plane.
Inductor Energy Calculator | Stored Magnetic Energy (J)
Find the magnetic energy stored by an ideal inductor from inductance in henries and current in amperes using E = ½LI², with joule and watt-hour results.
Inductor Network Calculator for Series, Parallel, and Energy
Calculate equivalent inductance for up to five inductors in series or parallel and estimate stored magnetic energy from an optional current input.
Jensen Wind Turbine Wake Power Loss Calculator
Estimate single-turbine downstream wake power loss, wake wind speed, and turbine output with the Jensen (PARK) model.
Kalman Filter Calculator – Single-Step 1D Prediction, Gain, and Update
Run a single-step 1D Kalman filter update, compute the gain, and see how Q and R change the corrected estimate.
Keldysh Strong-Field Ionization Calculator
Estimate the Keldysh parameter, ponderomotive energy, and ionization regime from ionization potential, wavelength, and laser intensity for strong-field ionization studies.
Kerr Black Hole Ringdown Frequency, Q, and Damping-Time Calculator
Estimate the dominant Kerr black hole ringdown mode from remnant mass and spin, with frequency, quality factor, and damping time for the l=m=2, n=0 quasinormal mode.
Kugelblitz Energy, Power, and Schwarzschild Radius Calculator
Calculate the mass-energy, average pulse power, Schwarzschild radius, and TNT equivalent for a hypothetical light-formed kugelblitz black hole.
Landau Damping Rate Calculator for Langmuir Waves
Interactive Landau damping rate calculator for a Maxwellian electron plasma: calculate Langmuir-wave frequency and damping, then visualize the decaying wave amplitude and energy.
Laser Cutter Kerf Compensation Calculator for Accurate Fits
Enter kerf width, target finished dimension, and cut type to calculate the compensated drawing size for laser-cut external profiles, slots, and holes.
Lawson Fusion Triple Product Calculator — nTτ D–T and D–D Benchmarks
Estimate a fusion plasma’s nTτ triple product from density, temperature, and energy-confinement time, then compare it with the page’s D–T and D–D Lawson reference benchmarks.
Lorentz Force Particle Simulator
Animate the trajectory of a charged particle in uniform electric and magnetic fields. Adjust charge, mass, fields, and time step to explore Lorentz force dynamics with energy tracking and CSV export.
Medication Compounding Percentage Calculator
Calculate active ingredient percentages and compounded medication quantities. Essential for pharmacists and healthcare professionals preparing custom medications.
Parabola Focus and Directrix Calculator for y = ax² + bx + c
Find the vertex, focus, directrix, axis of symmetry, and focal distance of a vertical parabola from y = ax^2 + bx + c. See the formulas, step-by-step examples, interpretation notes, and a quick practice game.
Parachute Descent Rate Calculator - Estimate Landing Speed
Estimate the terminal velocity and landing energy of a parachutist based on canopy size, mass, and drag coefficient.
Photoelectric Effect Calculator - Photon Energy and Electron Emission
Determine the kinetic energy of photoelectrons by entering light wavelength or frequency and the material work function.
Planck Star Bounce Time Calculator | External Time and Minimum Radius
Estimate the speculative external bounce time and minimum radius of a Planck star from black hole mass, α, and β using loop quantum gravity-inspired scaling relations.
Power Bank Charge Estimator (mAh to Full Device Charges)
Estimate how many full charges a power bank gives your phone or tablet from mAh, cell voltage, and real conversion efficiency, with worked examples and travel limits.
Power Bank Device Recharge Calculator
Estimate realistic device recharges from a power bank using mAh or Wh, voltage, efficiency, charge power, and device presets.
Poynting Vector Calculator for Electromagnetic Energy Flux
Estimate electromagnetic power flow in W/m² from electric field strength, magnetic flux density, and the angle between them with a Poynting vector calculator.
Pulley Mechanical Advantage, Effort Force & Rope Travel Calculator
Calculate ideal and efficiency-adjusted pulley mechanical advantage, effort force, rope pull length, and work for block and tackle lifting systems.
Railgun Launch Energy, Current, and Recoil Calculator
Estimate an electromagnetic railgun projectile's kinetic and electrical energy, acceleration force, rail current, capacitor energy, and launcher recoil from launch inputs.
RC Low-Pass Filter Calculator: Cutoff, Gain and Phase
Find the -3 dB cutoff of an RC low-pass filter from R and C in any unit prefix, with gain in dB, phase shift, rise time, a Bode plot and IEC E-series parts.
Resistive Heating Calculator: Power and Energy From Voltage or Current
Estimate resistive heating power and energy for a resistive load from voltage or current, resistance, and time.
Retaining Wall Earth Pressure Calculator (Rankine Ka & Thrust)
Rankine retaining wall earth pressure calculator: find Ka, Ko and Kp, base pressure, surcharge and water thrust, resultant height and overturning moment.
Riprap Stone Size Calculator (Isbash Method)
Estimate riprap median stone size and weight with the Isbash formula from flow velocity, rock density, coefficient, and safety factor for erosion protection.
RO Desalination Electricity Use and Operating Cost Calculator
Estimate simplified reverse osmosis desalination osmotic pressure, electricity use per cubic metre, and daily or annual power cost from feed salinity, recovery, pump efficiency, production capacity, and electricity price.
Rocket Equation Simulator
Interactive rocket equation calculator with mass burn, velocity, and energy tracking on a responsive canvas.
Rocket Launch Distance Simulator | Simplified Vertical Flight Model
Model a simplified vertical rocket ascent from mass, thrust, burn duration, drag area, and guidance efficiency. Estimate peak altitude, distance from Earth’s center, peak speed, and simulated flight time.
Schwarzschild Black Hole Hawking Evaporation Calculator
Calculate an idealized Schwarzschild black hole's Hawking evaporation lifetime, temperature, horizon radius, radiation power, and entropy from a mass entered in solar masses.
Screw Pull-Out Strength Calculator - Estimate Withdrawal Resistance
Estimate the pull-out strength of a screw in wood using diameter, embedment depth, and wood specific gravity. Useful for DIY and engineering projects.
Seasonal Fireplace Cost Comparison: Wood, Gas, and Electric
Estimate and compare seasonal wood, gas, and electric fireplace operating costs from your heat use, fuel prices, gas efficiency, and electric power draw.
Spacecraft Delta-V Calculator - Plan Your Maneuvers
Estimate the change in velocity achievable by a spacecraft using the rocket equation. Understand how mass and specific impulse determine mission profiles.
Speed of Sound Calculator for Gases | Acoustic Velocity from Temperature, γ, and Molar Mass
Calculate the speed of sound in an ideal gas from temperature, molar mass, and heat capacity ratio. Learn what each input means, see worked examples, compare gases, and play an optional sound-themed mini-game.
Stage Lighting Power Calculator - Estimate Show Energy Needs
Calculate the total electricity consumption for stage lights by entering fixture counts, wattage, and hours of use.
Stretched String Wave Speed & Fundamental Frequency Calculator
Calculate transverse wave speed and fixed-end fundamental frequency for a stretched string from its tension, linear mass density, and length.
Sump Pump Battery Backup Runtime & Storm Coverage Calculator
Estimate sump pump battery runtime, usable watt-hours, Peukert derating, storm-duty load, inverter losses, and extra batteries needed for an outage goal.
Surface Gravity Calculator - Planetary Weight Comparison
Determine the gravitational acceleration on any planet or moon using its mass and radius. Explore how surface gravity shapes planetary environments.
Tangential Velocity Calculator (v = ωr) | Solve for v, ω, or r
Solve v = ωr for tangential speed, angular speed, or radius. Enter rad/s, rpm, deg/s or a rotation period, and read results in m/s, km/h, mph and ft/s.
Tetration Calculator - Power Tower Explorer
Tetration calculator with fractional heights, super-root and super-log inverse modes, animated convergence plots, and the infinite power tower limit curve.
Torricelli Tank Draining Time Calculator - Drain Time, Height, Area, or Gravity
Estimate tank draining time with Torricelli's law, or solve for initial height, final height, tank area, orifice area, or gravity using consistent units.
Turbofan Thrust & TSFC Calculator – Estimate Jet Engine Momentum Thrust
Estimate turbofan net thrust and TSFC from air mass flow, inlet velocity, exit velocity, and fuel flow with a momentum-based jet engine calculator.
USB-C Power Delivery Calculator: PD Voltage, Current & Wattage
Check which USB-C PD profile hits your target wattage: 5/9/15/20 V SPR and 28/36/48 V EPR, the 3 A vs 5 A e-marked cable limit, PPS steps and cable drop.
Vortex Shedding Frequency Calculator | Strouhal Flow Estimate
Calculate the vortex shedding frequency behind a cylinder or bluff body from flow velocity, characteristic width, and Strouhal number using f = St·U/D.
Water Wheel Power Output Calculator | Shaft Power and Daily Energy
Estimate water wheel shaft power from flow rate, effective head, and wheel efficiency, with W, kW, and kWh/day output for planning and sizing.