Science
Scientific calculations, measurements, and real-world volume and geometry.
Whether you're a student working through Newton's laws, an engineer calculating structural loads, or simply curious about how the physical world works — our science calculators give you fast, accurate results with the underlying formulas clearly explained. Each tool covers the most common use cases so you can understand the answer, not just get a number.
Speed & Motion
Describes how objects move over time — velocity, acceleration, and displacement — without asking why.
Force & Mass
Newton's laws governing force, momentum, and the relationship between mass and acceleration.
Kinetic & Potential
Energy is conserved, not created or destroyed — it changes form. Calculate both types accurately.
3D Measurement
Volume and measurement for common solids: spheres, cylinders, cones, and rectangular prisms.
Calculators
View all science toolsSpeed & Acceleration Calculator
Calculate final velocity, initial speed, acceleration, or elapsed time. Handles uniform motion and constant acceleration.
Force Calculator
Apply Newton's Second Law to find force, mass, or acceleration. Enter any two values to solve for the third.
Heat Index Calculator
Calculate feels-like temperature from air temperature and relative humidity using the official NWS heat index method, with safety guidance.
Kinetic Energy Calculator
Find the energy of any moving object from its mass and velocity. Results shown in joules with a plain-English explanation.
Momentum Calculator
Calculate linear momentum from mass and velocity. Useful for understanding collisions, impulse, and conservation of momentum.
Volume Calculator
Calculate volume for spheres, cylinders, cones, and rectangular prisms. Switch between metric and imperial units.
Guides & Articles
View all Science articles
How Is the Heat Index Calculated? The Real Math Behind Feels Like Temperature
The real math behind "feels like" temperature - and why humidity changes everything. Walk through the Rothfusz regression, a 90°F / 70% worked example, and the NWS danger scale.
Scientists Found a Giant Squid in Waters It's Never Been Seen Before - Without Ever Seeing One. Here's How.
Western Australian canyon eDNA detected Architeuthis dux with no sighting: how environmental DNA works, what else the survey found at 4,510 m, and why six independent hits matter.
Formula Quick Reference
Key formulas for the calculators on this page, with variable definitions and SI units at a glance.
| Formula | Equation | Variables | Result unit | Calculator |
|---|---|---|---|---|
| Speed | s = d / t | d = distance (m), t = time (s) | m/s | Use calculator → |
| Acceleration | a = (v − u) / t | v = final velocity, u = initial velocity (m/s) | m/s² | Use calculator → |
| Force | F = m × a | m = mass (kg), a = acceleration (m/s²) | N (newtons) | Use calculator → |
| Kinetic Energy | KE = ½mv² | m = mass (kg), v = velocity (m/s) | J (joules) | Use calculator → |
| Momentum | p = m × v | m = mass (kg), v = velocity (m/s) | kg·m/s | Use calculator → |
| Volume (cuboid) | V = l × w × h | l = length, w = width, h = height (m) | m³ | Use calculator → |
| Volume (sphere) | V = (4/3)πr³ | r = radius (m) | m³ | Use calculator → |
Watch & Learn
Short, well-explained videos from trusted science channels on the topics covered by these calculators. Great for building intuition before running the numbers.
Newton's Laws: Crash Course Physics #5
Inertia, conservation of momentum, and Newton's three laws—how forces change motion and where F = ma comes from.
Introduction to Kinetic Energy with Example Problem
Defines kinetic energy and walks through a worked example—ideal context before using KE = ½mv² in the calculator.
Volume of a sphere | Perimeter, area, and volume | Geometry
Derives V = (4/3)πr³ and applies it in a numeric example—the same relationship behind our sphere volume tool.
Frequently Asked Questions
Common questions about science formulas, units, and calculations — answered directly.