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.
Electromagnetic Railgun Energy and Recoil Calculator
Evaluate projectile energy, required current, and platform recoil for an electromagnetic railgun using mass, velocity, rail length, capacitance, and efficiency.
Inclined Plane with Friction Calculator
Compute force components, friction, and acceleration for a block on an inclined plane with optional friction.
Mechanical Work Calculator
Determine the work performed by a constant force, with optional power and resulting speed estimates, and learn how the work-energy principle describes energy transfer.
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.
Resistive Heating Calculator - Joule Heat and Power Loss
Estimate the heat generated by a resistor or electrical load using current or voltage, resistance, and time.
Pulley System Mechanical Advantage Calculator
Use this pulley system mechanical advantage calculator to estimate ideal effort force and rope travel for block and tackle setups, and learn how efficiency a...
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Browse 93 calculators matched to this topic, or return to the Science category.
AC RMS Voltage Calculator - Peak, Peak-to-Peak and RMS Conversions
Convert between peak, peak-to-peak and root-mean-square values for sinusoidal voltages and estimate power dissipation in a resistive load.
Agile Sprint Velocity Calculator | Story Points per Sprint
Calculate average sprint velocity from completed story points and number of sprints. Learn how to use velocity for sprint planning, backlog forecasting, and realistic agile capacity discussions.
Air Filter Pressure Drop Calculator - HVAC System Planning
Calculate air filter pressure drop for HVAC systems using airflow, filter area, and MERV rating to support fan sizing, energy analysis, and maintenance planning, with dual in w.c. and pascal output.
Alcubierre Warp Field Energy Calculator
Explore an Alcubierre warp field energy calculator that estimates the (negative) mass–energy needed for a theoretical warp bubble. Enter velocity in multiple...
Alfvén Speed Calculator - Magnetohydrodynamic Waves
Calculate Alfvén speed in a plasma from magnetic field strength and mass density. Supports scientific notation, outputs in m/s and km/s, and includes presets...
Antenna Length Calculator - Determine Quarter and Half Wave Antennas
Calculate resonant antenna lengths for a given frequency with optional velocity factor, practical examples, and copy-ready summaries.
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 - Estimate Collision Power
Estimate asteroid impact energy in joules and megatons of TNT from diameter, density, and velocity to compare potential damage with known impact events.
Atmospheric Scale Height Calculator | Estimate Scale Height and Density Change with Altitude
Calculate atmospheric scale height from temperature, molar mass, and gravity, then estimate how density changes with altitude using the exponential atmosphere model.
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
Determine the ideal banking angle and safe speed range for a vehicle negotiating a circular turn using radius, speed, and 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 (Peters Formula)
Estimate the gravitational-wave merger time of two compact objects in a circular orbit with the Peters (1964) formula, from masses in M☉ and separation in km.
Biogas Production Calculator for Anaerobic Digestion | Methane and Energy Output
Use this biogas production calculator to estimate daily biogas volume, methane generation, and energy yield from anaerobic digestion inputs such as feedstock mass, volatile solids, specific gas yield, methane fraction, and operating days.
Bioluminescent Algae Display Cycle Planner
Plan light and dark cycles for bioluminescent algae exhibits. Calculate lighting start time, dark acclimation window, estimated glow intensity, and daily energy use, with a downloadable CSV schedule.
BIP39 Seed Phrase Brute Force Time Calculator | Estimate Missing Word Search Time
Estimate how long it could take to brute force a partially known BIP39 seed phrase based on phrase length, known words, and guesses per second. Includes formula notes, examples, and an optional checksum timing mini-game.
Black Hole Evaporation Time Calculator | Hawking Radiation, Temperature, and Lifetime
Estimate the Hawking evaporation time, temperature, Schwarzschild radius, power, and entropy of an isolated Schwarzschild black hole from its mass using standard semiclassical formulas.
Capacitor Energy Calculator - Stored Electric Energy
Compute the energy stored in a capacitor from its capacitance and voltage using E=1/2CV^2.
Capillary Rise Calculator - Surface Tension in Narrow Tubes
Determine how high a liquid climbs in a capillary tube using surface tension, contact angle, and tube radius. Learn the physics of capillary action and its real-world implications.
Coherent Elastic Neutrino–Nucleus Scattering Calculator
Compute the cross section for coherent elastic neutrino–nucleus scattering using Standard Model parameters.
Coleman–De Luccia Vacuum Decay Calculator
Compute thin‑wall (flat‑space) bubble nucleation: critical radius, bounce action, and decay rate per unit volume from surface tension σ, vacuum energy differ...
Compressed Air Energy Storage Calculator - Estimate CAES Capacity
Compute the storable energy and average discharge power of a compressed air energy storage system using cavern volume, pressure limits and efficiency assumptions.
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 - Charged Particle Motion
Calculate the cyclotron frequency of a charged particle in a magnetic field. Useful for plasma physics and mass spectrometry.
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 - Measure Efficiency
Estimate the Power Usage Effectiveness of a data center by comparing total facility energy to IT equipment energy.
Desalination Energy Cost Calculator | Daily kWh & Cost
Estimate desalination electricity use (kWh/day and kWh/m³) and daily energy cost from water volume, salinity, efficiency, and power price. Includes assumptio...
Drone Payload Endurance Trade-Off Analyzer
Evaluate how payload mass, reserves, weather, and energy reserves influence multirotor drone flight time and range, then compare scenarios and export the analysis.
Electric Aircraft Range Calculator
Estimate the achievable flight range of an electric aircraft using battery capacity, cruise power, speed and reserve energy.
Electric Power Calculator: Solve for Volts, Amps, Ohms, and Watts
Use this electric power calculator to solve for voltage, current, resistance, or power from the values you already know, with a circuit-focused example, interpretation guide, and assumptions to watch.
Electromagnetic Railgun Energy and Recoil Calculator
Evaluate projectile energy, required current, and platform recoil for an electromagnetic railgun using mass, velocity, rail length, capacitance, and efficiency.
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
Estimate battery life and lifting capacity for powered exoskeletons based on load, height, rate, and efficiency.
Feshbach Resonance Scattering Length Calculator
Compute scattering length and cross-section near a Feshbach resonance from magnetic field and resonance parameters.
Firearm Recoil Calculator | Estimate Free Recoil Energy
Estimate free recoil energy for a firearm from bullet weight, muzzle velocity, powder charge, and gun weight using a standard momentum model. Compare loads, see how each input changes recoil, and interpret the result as a planning baseline.
Fuel Injector Size Calculator - Determine Required Flow Rate
Estimate the minimum fuel injector flow rating needed for an engine based on horsepower, BSFC, and duty cycle.
Fusion Lawson Criterion Calculator (nTτ) — Triple Product & Ignition Thresholds
Use this Fusion Lawson Criterion Calculator to compute the plasma triple product nTτ (density × temperature × confinement time) and compare it with common D–T and D–D Lawson ignition thresholds.
Gemstone Carat Weight Calculator - Estimate Stone Mass
Determine the approximate carat weight of a faceted gemstone based on its dimensions, specific gravity, and a shape factor.
Graphene Sheet Resistance Calculator
Estimate graphene sheet resistance and conductivity from carrier density, mobility, and temperature. Explore temperature scaling and suitability for transpar...
Gravitational Wave Memory Step Calculator | Estimate Nonlinear Memory Strain
Use this gravitational wave memory step calculator to estimate the nonlinear memory strain from a burst or merger 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 - Quantum Limits
Explore the relationship between position and momentum uncertainty using the Heisenberg principle.
Hohmann Transfer Simulator with Orbital Animation
Plan a Hohmann transfer and watch a spacecraft coast along the transfer ellipse. Adjust orbital radii, observe energy, and export trajectory data.
Home Automation Energy Savings Calculator | Estimate Smart Home Eff...
Predict how much electricity you could save by automating lights and appliances. Enter your current usage and automation efficiency to see the potential annual reduction.
Home EV Charger Load and Schedule Planner (Panel Capacity + TOU Savings)
Plan safe home EV charging by checking continuous load vs spare panel capacity, estimating charge time to a target state of charge, and comparing standard vs off-peak (TOU) electricity costs.
Home Office Electricity Cost Calculator – Estimate Monthly Power Us...
Estimate how much your home office setup adds to your electric bill each month. Enter wattage, daily hours, standby power, and your electric rate to see mont...
Home Sump Pump Backup Power Planner (Battery Runtime Calculator)
Estimate sump pump backup runtime from battery bank size, duty cycle, depth of discharge, and inverter efficiency. Compare calm vs extreme storm scenarios and see how many batteries you may need.
Hot Air Balloon Lift Calculator – Calculate Payload & Buoyant Force
Calculate hot air balloon lift, payload capacity, and safety margins using envelope volume, temperatures, and equipment mass inputs.
Hydrostatic Pressure Calculator - Pressure in Water and Other Liquids
Calculate hydrostatic pressure from fluid density, depth, and gravity, then view the answer in kPa and psi for water, seawater, or any other liquid column.
Hyperloop Tube Pumping Power Calculator
Approximate the continuous pumping power and daily energy cost required to maintain a low-pressure Hyperloop tube, accounting for tube size, leak rate, and pump efficiency.
Inclined Plane with Friction Calculator
Compute force components, friction, and acceleration for a block on an inclined plane with optional friction.
Inductor Energy Calculator - Magnetic Energy Storage
Calculate the energy stored in an inductor using E = 1/2 · L · I². Enter inductance (H) and current (A) to get magnetic energy in joules, plus theory, exampl...
Inductor Network Calculator - Series and Parallel Equivalent
Calculate the equivalent inductance of up to five inductors in series or parallel. Optionally estimate stored magnetic energy from current for quick filter...
Interactive RC Low‑Pass Filter Simulator
Determine cutoff frequency while visualizing how an RC network filters a sine wave. Canvas animation, energy bars, and CSV export reveal time‑domain and frequency behavior.
Kalman Filter Calculator – Single-Step 1D Prediction & Update
Use this Kalman filter calculator to run a single 1D prediction and update step, compute the Kalman gain, and see how process and measurement variance shape...
Keldysh Parameter Strong-Field Ionization Calculator
Compute the Keldysh parameter and ponderomotive energy for laser-driven strong-field ionization, classifying regimes between multiphoton and tunneling limits.
Kerr Black Hole Ringdown Mode Calculator
Calculate the fundamental Kerr black hole ringdown (l=m=2, n=0): quasinormal-mode frequency (Hz), damping time (s), and quality factor from mass (solar masse...
Kugelblitz Black Hole Formation Energy Calculator
Estimate the energy and power needed to create a kugelblitz black hole from concentrated light.
Landau Damping Simulator with Decaying Langmuir Wave
Interactive Landau damping calculator: watch a Langmuir wave lose energy on a canvas, explore parameter effects, and download amplitude data.
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.
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.
Mechanical Work Calculator
Determine the work performed by a constant force, with optional power and resulting speed estimates, and learn how the work-energy principle describes energy transfer.
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 Bounce Time and Minimum Radius
Estimate the speculative external bounce time and minimum radius of a Planck star using loop quantum gravity-inspired scaling relations. Enter black hole mass, bounce coefficient alpha, and radius coefficient beta to explore extreme quantum gravity scales.
Power Bank Charge Estimator (mAh to Full Device Charges)
Estimate how many full charges a power bank can provide for your phone, tablet, or other device using mAh, voltage, and efficiency. Includes formula, worked examples, assumptions, travel notes, and an optional mini-game.
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 - Electromagnetic Energy Flow
Calculate the magnitude of the Poynting vector and electromagnetic energy flux from electric and magnetic fields. Enter E, B, and the angle between them to g...
Pulley System Mechanical Advantage Calculator
Use this pulley system mechanical advantage calculator to estimate ideal effort force and rope travel for block and tackle setups, and learn how efficiency a...
Resistive Heating Calculator - Joule Heat and Power Loss
Estimate the heat generated by a resistor or electrical load using current or voltage, resistance, and time.
Retaining Wall Earth Pressure Calculator – Active Force and Resultant
Calculate active earth pressure and total horizontal force on a retaining wall using wall height, soil unit weight, and friction angle. Based on Rankine theo...
Reverse Osmosis Desalination Energy & Cost Calculator
Estimate osmotic pressure, specific energy consumption, and daily or annual electricity cost for a simplified reverse osmosis desalination plant using capacity, feed salinity, recovery ratio, pump efficiency, and power price.
Riprap Stone Size Calculator | Isbash Riprap Sizing for Channels and Outlets
Estimate riprap median stone diameter and weight with the Isbash formula using flow velocity, rock density, stability coefficient, and safety factor for channel, bank, and outlet erosion protection.
Rocket Equation Simulator
Interactive rocket equation calculator with mass burn, velocity, and energy tracking on a responsive canvas.
Rocket Launch Distance Simulator | Estimate Altitude, Velocity, and Distance
Experiment with dry mass, propellant, thrust, burn time, drag, and guidance to estimate rocket altitude, peak velocity, flight duration, and orbital distance with a live trajectory preview.
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.
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.
String Wave Speed Calculator - Tension and Linear Density
Determine wave speed on a stretched string and its fundamental frequency from tension, linear mass density, and length.
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
Tangential Velocity Calculator: solve for tangential speed (v), angular speed (ω), or radius (r) using v = ωr. Includes steps, unit notes, assumptions, worked examples, and an optional mini-game.
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 – Jet Engine Performance Tool
Calculate net thrust and thrust specific fuel consumption (TSFC) for a turbofan engine using air mass flow, inlet and exit velocity, and fuel flow. Ideal for...
USB-C Power Delivery Calculator (PD) — Voltage, Current & Wattage Profiles
Calculate the best USB‑C Power Delivery (PD) voltage and current profile for a target wattage, based on your cable’s current limit (3 A or 5 A). Includes a comparison table for common PD voltages.
Vortex Shedding Frequency Calculator (Strouhal Number) | Hz from Velocity & Diameter
Calculate vortex shedding frequency (Hz) for a cylinder or bluff body using the Strouhal number: f = St·U/D. Enter flow velocity, characteristic width, and Strouhal number.
Water Wheel Power Output Calculator
Estimate water wheel mechanical output from flow (L/s), net head (m), and efficiency. Get power in W/kW plus daily energy (kWh/day) for planning and sizing.
Wind Farm Wake Power Loss Calculator
Estimate power reduction for downstream turbines using the Jensen wake model with turbine diameter, spacing, and thrust coefficient.
Wood vs Gas vs Electric Fireplace Cost Calculator
Compare seasonal operating costs of wood, gas, and electric fireplaces using local fuel prices and energy needs.