Science & Engineering
15 tools available. All free, all private.
Physics calculators, electronics tools, chemistry helpers, and engineering references. From Ohm's law to molecular weight — all running privately in your browser with full precision.
When to Use Science & Engineering
- Calculating electrical values with Ohm's law
- Decoding resistor color codes
- Computing molecular weights for chemistry
- Solving physics problems (force, energy, pressure)
- Working with significant figures and scientific notation
Popular Science & Engineering
Science
LED Resistor Calculator
Calculate LED current-limiting resistor
Science
Voltage Divider Calculator
Calculate voltage divider output
Science
Capacitor Calculator
Calculate capacitor impedance and time constant
Science
pH Calculator
Calculate pH with visual scale
Science
Molecular Weight Calculator
Calculate molecular weight from chemical formula
Science
Density Calculator
Calculate density, mass, or volume
Science
Force Calculator
Calculate force with F=ma
Science
Pressure Calculator
Convert between pressure units
Science
Kinetic Energy Calculator
Calculate kinetic energy (KE = ½mv²)
Science
Half Life Calculator
Calculate radioactive decay and remaining amount
Science
Significant Figures Calculator
Count and round significant figures
Science
Stoichiometry Calculator
Calculate mole ratios and conversions
Frequently Asked Questions
Are the scientific calculations precise? ▼
Yes. All calculations use standard formulas and JavaScript double-precision floating point (64-bit) for accuracy.
Can I use these for homework? ▼
Absolutely. These tools are designed as educational aids. They show formulas and step-by-step solutions.
Do you cover advanced topics? ▼
We cover fundamental science and engineering calculations. More advanced tools are being added regularly.