Free online science tools
Science calculations appear constantly in coursework, labs, and engineering work. Checking the molar mass of a compound, reading resistor color bands, solving kinematic equations, or finding the pH of a solution — these dedicated tools give instant answers with labeled inputs and clear units.
Every tool runs entirely in your browser with no signup required. No data is sent to any server. Type a value and the result updates immediately.
From high school chemistry (periodic table, pH scale, gas laws) to undergraduate physics (kinematics, wave mechanics, radioactive decay) and electronics engineering (Ohm's law, resistor color codes), this hub covers the science calculations that come up most often in study and work.
Tools in this category
- Interactive Periodic TableAll 118 elements with properties, categories, and electron configuration.Open tool →
- Molar Mass CalculatorParse any chemical formula and compute molecular weight in g/mol.Open tool →
- Physics CalculatorKinematics, forces, energy, and wave formulas with solve-for logic.Open tool →
- Ohm's Law CalculatorSolve for voltage, current, resistance, or power.Open tool →
- Gas Laws CalculatorBoyle's, Charles's, Gay-Lussac's, combined, and ideal gas law.Open tool →
- Half-Life CalculatorRadioactive decay: find remaining amount, elapsed time, or half-life.Open tool →
- Wavelength & Frequency CalculatorSolve wavelength, frequency, wave speed, and period with unit conversion.Open tool →
- Density CalculatorSolve density, mass, or volume — with common material reference.Open tool →
- Resistor Color Code Calculator4-band and 5-band resistor color code to resistance value and back.Open tool →
- pH CalculatorConvert pH, pOH, [H+], and [OH-] with acid/base classification.Open tool →
- Formula CheatsheetQuick-reference formulas for math, physics, and chemistry — browse and copy.Open tool →
Frequently asked questions
- Are these science tools free?
- Yes. All science tools on WebToolz365 are completely free with no signup required.
- Do the calculations happen on a server?
- No. All calculations run in JavaScript in your browser. No data is sent to our servers.
- Does the periodic table include all 118 elements?
- Yes. The interactive periodic table includes all 118 confirmed elements with atomic number, symbol, name, atomic mass, category, and electron configuration.
- Can the molar mass calculator handle complex formulas?
- Yes. The molar mass calculator parses nested parentheses — for example Ca(OH)2, Fe2(SO4)3, and Al2(SO4)3 are all handled correctly.