Physics & Chemistry
Ohm's law, density, molar mass, resistor color code and pH calculator.
Scientific Calculator
A real working calculator: functions, constants, memory & percent.
Date Difference Calculator
Days, weeks, months & years between two dates — instant.
Molar Mass Calculator
Compute the molar mass of any chemical formula — H₂O, NaCl, C₆H₁₂O₆…
Density Calculator
Solve density, mass or volume — ρ = m / V — for any two knowns.
Ohm's Law Calculator
Solve V = I × R for any one variable — voltage, current or resistance.
Resistor Color Code Calculator
Decode 4-band resistors from colors — and reverse value → colors.
Projectile Motion Calculator
Range, max height, time of flight — for any launch angle and velocity.
Exponential Growth Calculator
A = P · e^(rt) — population, bacteria, compound growth.
pH Calculator
pH from [H⁺] and reverse — with pOH, [OH⁻] and temperature.
Physics and Chemistry Calculators
Physics and chemistry calculators solve common scientific problems from Ohm's law to molar mass. They use standard physical constants and chemical formulas for accurate results.
These tools are designed for students and professionals who need quick calculations without scientific calculators or spreadsheet setup. Results include formulas and units.
Each calculator shows the formula used, making it educational as well as functional. Students can verify their manual calculations and learn the underlying physics or chemistry.