Financial calculator category
Physics & Mechanics calculators
Work out speed, force, energy, motion, waves and gas behavior from the standard physics formulas. 14 calculators here — Horsepower Calculator, Speed, Distance and Time Calculator and Kinetic Energy Calculator among them — each showing its formula, a worked example, and its sources.
Compare scenarios, not just answers
Start with values you can verify, save a baseline and change one assumption at a time. Formula, worked example, interpretation boundary and authoritative reference are on every calculator below.
Horsepower Calculator
Calculate horsepower and kilowatts from torque and engine speed.
Open calculator →02Speed, Distance and Time Calculator
Calculate average speed from distance and travel time.
Open calculator →03Kinetic Energy Calculator
Calculate kinetic energy and momentum from mass and speed.
Open calculator →04Newton's Second Law Force Calculator
Calculate force in newtons and pounds-force from mass and acceleration.
Open calculator →05Uniform Acceleration Calculator
Calculate final speed, distance and average speed under constant acceleration.
Open calculator →06Hooke's Law Calculator
Calculate a spring's force and stored energy from its spring constant and stretch.
Open calculator →07Ideal Gas Law Calculator
Calculate the pressure of a gas from its amount, temperature and volume.
Open calculator →08Gravitational Potential Energy Calculator
Calculate the potential energy of a mass raised to a height.
Open calculator →09Work and Power Calculator
Calculate the work done by a force over a distance, and the power if you know the time.
Open calculator →10Wavelength and Frequency Calculator
Convert the frequency of a radio or light wave into its wavelength and period.
Open calculator →11Projectile Motion Calculator
Calculate the range, maximum height and flight time of a projectile from its launch speed and angle.
Open calculator →12Free Fall Calculator
Calculate the fall time and impact speed of an object dropped from a height.
Open calculator →13Centripetal Force Calculator
Calculate the inward force and acceleration needed to move a mass around a curve.
Open calculator →14Pendulum Period Calculator
Calculate the period and frequency of a pendulum from its length.
Open calculator →Go deeper
Physics & Mechanics guides
Every tool, one table
Physics & Mechanics calculators at a glance
Each row shows the headline figure that calculator returns at its own worked-example inputs, so the whole category is comparable before you open anything.
| Calculator | What it answers | Headline output | Worked example |
|---|---|---|---|
| Horsepower Calculator | Compare an engine's output at a given RPM with the figure quoted on its spec sheet. | Horsepower | 285.6 |
| Speed, Distance and Time Calculator | Check whether a trip's average speed fits the schedule you planned. | Average speed per hour | 48 |
| Kinetic Energy Calculator | See how much more energy a small increase in speed adds. | Kinetic energy (joules) | 468,750 |
| Newton's Second Law Force Calculator | Convert a mass and an acceleration into the force a rope, bolt or motor must carry. | Force (newtons) | 686.7 |
| Uniform Acceleration Calculator | Predict how far and how fast something goes when it speeds up at a steady rate. | Final speed (m/s) | 25 |
| Hooke's Law Calculator | Check the load a spring carries or the energy it stores at a given stretch. | Spring force (N) | 30 |
| Ideal Gas Law Calculator | Estimate the pressure in a sealed container as the temperature or volume changes. | Pressure (atm) | 1 |
| Gravitational Potential Energy Calculator | See how much energy a lifted load stores and releases if it falls. | Potential energy (J) | 490.5 |
| Work and Power Calculator | Find the energy a push or a pull transfers, and how fast it happens. | Work done (J) | 519.6 |
| Wavelength and Frequency Calculator | Turn a radio station or a Wi-Fi channel's frequency into the size of its wave. | Wavelength (m) | 3 |
| Projectile Motion Calculator | Predict where a thrown or launched object lands on level ground. | Range (m) | 40.8 |
| Free Fall Calculator | Estimate how long a drop takes and how fast the object hits, ignoring air. | Fall time (s) | 3.2 |
| Centripetal Force Calculator | Check the grip a vehicle needs to hold a turn at a given speed. | Centripetal force (N) | 9,600 |
| Pendulum Period Calculator | Find the swing time of a pendulum, a swing or a clock weight. | Period (s) | 2 |
These are example results at each calculator’s default inputs: open any calculator above to try your own numbers. The physics & mechanics figures here come from each calculator’s own published formula, so any result can be traced back to its inputs, and a result that looks surprising is more often a sign that an assumption needs changing than that the arithmetic is wrong.
Background reading
Physics & Mechanics guides
- Physics formulas for everyday questionsUse the standard formulas for speed, force, energy, work, power and projectiles to answer practical questions, and know where the textbook model stops working.
- Lab calculations: dilutions, pH, half-life and yieldWork through common bench and classroom calculations, from diluting a stock solution to converting a trace concentration, and avoid slips that spoil results.
Keep exploring
Related calculator categories
Next to the physics & mechanics tools, these categories answer the questions that usually come up alongside them.
People also ask
Physics & Mechanics calculator questions
What can I calculate in the physics & mechanics category?
14 calculators: Horsepower Calculator, Speed, Distance and Time Calculator, Kinetic Energy Calculator, Newton's Second Law Force Calculator, Uniform Acceleration Calculator, Hooke's Law Calculator, Ideal Gas Law Calculator, Gravitational Potential Energy Calculator and 6 more. Work out speed, force, energy, motion, waves and gas behavior from the standard physics formulas.
Are the physics & mechanics calculators free?
Yes. Calculators run in your browser. No account, no sign-up, no gated result. Inputs are not sent to a server, and each page shows its formula, a worked example, limitations and its sources.
How accurate are these physics & mechanics estimates?
The arithmetic follows each published formula and is tested at normal and boundary values. Accuracy for a real decision depends on your inputs and on whether fees, rules or timing fall outside the model. Interpretation boundaries are stated on the page.
Which physics & mechanics calculator should I start with?
Start with the one matching the decision you face. For example, the Horsepower Calculator returns horsepower of 285.6 at its worked-example inputs. Each page links the related calculators that answer the next question.
Which physics & mechanics calculator asks for the fewest inputs?
Wavelength and Frequency Calculator asks for 1. The most any physics & mechanics calculator asks for is 4 (Work and Power Calculator), and the middle calculator takes 3.
Which physics & mechanics calculator asks for the most inputs?
Work and Power Calculator asks for 4: force (n), distance (m), angle between force and motion (degrees) and time taken (s). Expect to gather more documents for it than for Wavelength and Frequency Calculator, which asks for 1.
Which input decides the result most often across the physics & mechanics calculators?
Speed (m/s) moves the headline result most in 2 of the 14 physics & mechanics calculators tested, including Kinetic Energy Calculator and Centripetal Force Calculator. Each was measured by moving one input at a time from its worked-example value and comparing the change in the headline result.
What kind of result do the physics & mechanics calculators return?
Of the 14 physics & mechanics calculators, 14 return a plain number as the headline result. Every one also shows 2 to 3 results in total.
What do the physics & mechanics calculators ask you to enter?
Across the 14 physics & mechanics calculators there are 35 input fields: 35 plain numbers. Each field's label names exactly what to enter, and the prefilled value shows what a typical entry looks like.
Which physics & mechanics calculators show a period-by-period schedule?
None of the 14 physics & mechanics calculators builds a schedule: each returns its result directly from the formula, so the worked example and the sensitivity tables are the evidence to read.
What does the horsepower calculator show at its worked example?
At the worked-example inputs the horsepower is 285.6. It rises with torque (lb-ft) and engine speed (RPM). Across every input tested, torque (lb-ft) moves it most.