Science & Engineering
Category
Science & Engineering Calculators
SI-friendly physics and engineering helpers for class, lab checks, and first-cut estimates. Ohm’s law, projectile motion, speed/distance/time, energy, and related textbook identities live here under idealized assumptions unless a page notes otherwise. Pair with the math hub when you need algebra or trigonometry support alongside the science result.
50 tools in this category — each page includes how-to steps, a worked example, formula notes, and FAQs.
- Students verifying lab and homework calculations
- Hobbyists doing first-cut electrical or motion estimates
- Tutors demonstrating textbook identities with live numbers
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Popular in Science & Engineering
- Tank Fill Level (3D)Cylinder or rectangular tank capacity, filled volume, and freeboard — with liquid-level 3D view.
- Solar Panel Tilt (3D)Suggested panel tilt by latitude/season and a simple relative irradiance factor — with 3D panel & sun.
- Ohm's Law TriangleSolve for V, I, or R from any two values — classic triangle helper.
- Projectile Motion CalculatorRange, max height, flight time, and trajectory chart for ideal projectile motion.
- Flight Carbon Footprint CalculatorRough passenger flight CO₂ from miles or hours and passenger count using illustrative emission factors.
- Battery Run-Time CalculatorEstimate how many hours a battery lasts from watt-hour capacity and continuous load in watts.
All Science & Engineering tools
Showing 50 of 50
- Ohm's Law CalculatorSolve for voltage, current, or resistance (V = I × R).
- Electrical Power CalculatorCompute power P = V × I (and related energy over time).
- Velocity CalculatorAverage velocity from distance and time (v = d / t).
- Density CalculatorDensity = mass / volume.
- Acceleration CalculatorAcceleration from change in velocity over time.
- Work & Kinetic EnergyWork W = F × d and kinetic energy KE = ½mv².
- Kinetic Energy CalculatorCompute KE = ½mv² and solve for mass or velocity when KE is known.
- Speed / Distance / TimeSolve for speed, distance, or time given the other two.
- Force (F = ma)Newton's second law — solve for force, mass, or acceleration.
- Pressure CalculatorPressure = force / area, with optional unit hints.
- Ohm's Law SolverSolve for voltage, current, or resistance (and power) given any two.
- Density CalculatorDensity = mass / volume.
- Electrical Power (P = VI)Compute electrical power from voltage and current.
- Wavelength CalculatorWavelength from frequency (default wave speed = speed of light).
- Freefall CalculatorTime, velocity, or height for freefall under constant g.
- Resistor Series / ParallelEquivalent resistance for series or parallel resistor networks.
- Momentum CalculatorLinear momentum p = m · v.
- Capacitor Energy CalculatorEnergy stored in a capacitor: E = ½ C V².
- Wire Gauge (Rough)Very rough AWG suggestion from amp load for short copper/aluminum runs.
- Projectile Motion CalculatorRange, max height, flight time, and trajectory chart for ideal projectile motion.
- Ohm's Law TriangleSolve for V, I, or R from any two values — classic triangle helper.
- Ideal Gas Law SolverSolve PV = nRT for P, V, n, or T (R in L·atm/(mol·K)).
- Wavelength ↔ FrequencyConvert between wavelength and frequency using c = 3×10⁸ m/s.
- Half-Life CalculatorRemaining quantity after radioactive (or any exponential) decay.
- Snell's Law CalculatorRefraction angle from n₁, θ₁, and n₂ — flags total internal reflection.
- Thin Lens EquationImage distance and magnification from focal length and object distance.
- Capacitor Series / ParallelEquivalent capacitance for series or parallel networks.
- Doppler Shift CalculatorObserved frequency with moving source and/or observer (sound in air).
- Subnet CalculatorIPv4 + CIDR → network, mask, usable hosts, and address range.
- Resistor Color Code CalculatorDecode 4- or 5-band resistor colors into ohms and tolerance.
- LED Resistor CalculatorFind series resistor ohms and power for an LED given supply, Vf, and current.
- Frequency ↔ Wavelength ConverterConvert between frequency and wavelength with light speed or a custom wave speed.
- Molarity CalculatorCompute molarity from moles and liters, or from mass, molecular weight, and volume.
- pH CalculatorSimple pH / pOH from hydrogen or hydroxide ion concentration (ideal dilute aqueous).
- Free Fall Distance CalculatorDistance and companion time/velocity for free fall with selectable g.
- Density from Mass & VolumeCompute density rho = m / V with clear mass and volume inputs for lab and homework checks.
- Ideal Gas Law (PV=nRT)Solve PV = nRT for the missing variable with selectable R (L·atm or J) for chemistry homework.
- Half-Life Decay CalculatorCompute remaining quantity after exponential decay plus decay constant lambda, mean life, and half-lives elapsed.
- Flight Carbon Footprint CalculatorRough passenger flight CO₂ from miles or hours and passenger count using illustrative emission factors.
- Tree Offset Estimate CalculatorEstimate how many trees (at a chosen kg CO₂ absorbed per tree per year) would offset a CO₂ amount.
- Battery Run-Time CalculatorEstimate how many hours a battery lasts from watt-hour capacity and continuous load in watts.
- Video Bitrate File Size CalculatorEstimate video file size from bitrate (Mbps) and duration in minutes.
- Tank Fill Level (3D)Cylinder or rectangular tank capacity, filled volume, and freeboard — with liquid-level 3D view.
- Solar Panel Tilt (3D)Suggested panel tilt by latitude/season and a simple relative irradiance factor — with 3D panel & sun.
- Pipe Volume (3D)Internal fluid volume and pipe wall material volume from ID, length, and wall thickness — with 3D pipe.
- Silo + Hopper Capacity (3D)Cylinder bin plus conical hopper capacity and lateral area — with interactive 3D silo.
- Camera FOV & Framing (3D)Horizontal field of view from sensor and focal length (or FOV°) plus framing width at a distance — 3D frustum.
- Guy Wire Length (3D)Guy wire length and angles from mast height and anchor radius — with 3D mast and wires.
- Conveyor Incline (3D)Belt length, rise, angle, and optional throughput from speed × load area — with 3D conveyor wedge.
- Boat Hull Volume Approx (3D)Approximate hull displacement volume from length, beam, draft, and prismatic coefficient — planning only.
Related categories
- MathBasic and scientific math, percentages, averages, algebra solvers, geometry (circle, Pythagoras), graphing, and showcase 3D tools — with formula notes you can check against homework.
- StatisticsMean, median, mode, standard deviation, combinations/permutations, and classical probability helpers for homework and quick exploratory checks.
- EducationFinal grade needed, grade percentage, GPA-style helpers, and study-friendly math — match your syllabus weights before trusting a target score.
Looking for walkthroughs? See our guides on compound interest, EMI, mortgage, BMI, and percentage / tip / tax — or browse all calculators.