Science & Engineering Calculators
Physics, chemistry, and electrical engineering calculators using standard scientific formulas. Ohm's law, kinetic energy, pH, half-life, circuit analysis, and more. Built for students, engineers, and anyone who needs lab-grade math.
- ✓Physics: acceleration, kinetic/potential energy, gravity, pressure
- ✓Electrical: Ohm's law, resistor codes, LED resistors, capacitors
- ✓Chemistry: pH, dilution, molar mass, half-life
- ✓Acoustics: decibels, speed of sound, wavelength
Most used: Ohm's Law Calculator, Half-Life Calculator, Density Calculator
Try any of the 20 science & engineering calculators below — or get one free for your AI.
Every calculator on this page is free to use right now. You can also download any one as a Claude skill file (free with email) to chat with it in Claude Code, ChatGPT, or any AI platform. Or get the full Science & Engineering Pack for $29.
Common workflows in this category
Click any scenario to jump into the calculator with the example pre-loaded.
20 free calculators
Acceleration Calculator
Calculate acceleration from Newton's second law (F=ma). Solve for force, mass, or acceleration.
Capacitor Calculator
Calculate total capacitance for series and parallel capacitor circuits. Find component or total value.
dB to Watts Calculator
Convert dBm to milliwatts and watts. Solve for power using 10^(dBm/10) formula.
Decibel Calculator
Calculate dB from power or voltage ratios. Perfect for audio, RF, and telecommunications.
Density Calculator
Calculate density from mass and volume. Find any variable using the density formula ρ = m/V.
Dilution Calculator
Calculate how to dilute solutions to target concentration using the dilution equation C1V1=C2V2.
Gravity Calculator
Calculate gravitational force using Newton's law of universal gravitation. F = G*m1*m2/r².
Half-Life Calculator
Calculate remaining radioactive material after decay using half-life formula. Find time or quantity.
Inductor Calculator
Calculate total inductance for series and parallel inductors. Find component or total value.
Kinetic Energy Calculator
Calculate kinetic energy (KE = 1/2 mv²) for any moving object. Find velocity, mass, or energy.
LED Resistor Calculator
Calculate LED resistor value instantly using forward voltage and desired current. Protect your LEDs from burnout.
Molar Mass Calculator
Calculate molar mass from chemical formula. Perfect for chemistry students and lab professionals.
Ohm's Law Calculator
Use Ohm's Law (V=IR) to calculate voltage, current, or resistance. Perfect for electrical engineers and hobbyists.
pH Calculator
Calculate pH from [H+] concentration or find [H+] from pH. Instantly convert between pH scale and acidity.
Potential Energy Calculator
Calculate gravitational potential energy (PE = mgh). Find mass, height, or energy.
Pressure Calculator
Calculate pressure using P=F/A. Find force, area, or pressure instantly.
Resistor Color Code Calculator
Decode resistor color bands to find resistance value, tolerance, and temperature coefficient. Fast and accurate.
Speed of Sound Calculator
Calculate speed of sound in air, water, or any medium at different temperatures. Includes real-world examples.
Wavelength Calculator
Calculate wavelength from frequency or vice versa for light, radio waves, sound, and any wave.
Wind Chill Calculator
Calculate wind chill using the NWS formula. Find how cold it actually feels with wind.