Science Calculators
10 free online calculators
About Science Calculators
Physics and chemistry problems live or die by applying the right formula with the right units. ToolForge's science calculators handle the staples: velocity, force, kinetic energy, projectile motion, and density from physics; Ohm's law and resistor color codes from electronics; and pH, molarity, and the ideal gas law from chemistry.
Students solve and check coursework, and anyone working with these relationships uses them to get a fast, reliable answer. Each calculator is built around the actual scientific formula — F = ma, v = d/t, PV = nRT — and supports the units these problems use, with results shown clearly. They run in your browser with no sign-up, making them handy for a quick check during study or lab work.
Velocity Calculator
Calculate velocity using v = d/t
Force Calculator
Calculate force using F = ma
Kinetic Energy Calculator
Calculate kinetic energy using KE = ½mv²
Ohm's Law Calculator
Calculate voltage, current, resistance using V = IR
pH Calculator
Calculate pH from hydrogen ion concentration
Molarity Calculator
Calculate molarity using M = n/V
Ideal Gas Law Calculator
Calculate pressure, volume, moles, temperature using PV = nRT
Projectile Motion Calculator
Calculate projectile trajectory, range, time of flight
Resistor Color Code Calculator
Decode 4-band and 5-band resistor color codes
Density Calculator
Calculate density using ρ = m/V
Other Calculator Categories
Frequently Asked Questions
Which scientific formulas do these calculators use?
They apply the standard relationships directly — for example velocity as distance over time, force as mass times acceleration, the ideal gas law as PV = nRT, and Ohm's law as V = IR. Each tool is built around the real formula for its topic.
Do they handle different units?
Yes. The science calculators accept the units these problems commonly use and convert as needed, so you can work in the units your textbook or experiment uses and read the result in sensible units.
Can I solve for any variable in a formula?
Many of the calculators let you solve for whichever quantity is unknown by entering the others — for instance finding velocity, distance, or time from the other two. Where that applies, the tool's controls let you pick what to calculate.
