Physics Formula Calculator
Preset formulas — ya koi bhi apni equation type karke solve karo
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Use letters for variables (u, a, t, m, F…) — sin cos sqrt ^ pi e allowed. Example: KE = 0.5*m*v^2
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ErrorPhysics Formula Calculator — Complete Guide & Instructions
MakeCard Physics Formula Calculator solves the standard equations of motion, mechanics, energy, electricity and density for whichever variable you are missing. Pick a preset like v = u + at, F = ma, KE = ½mv² or V = IR, choose the unknown, fill in the known values, and get the answer with its unit. A Custom mode goes further: type any equation — say KE = 0.5*m*v^2 — and the solver isolates whichever variable you select, numerically, even when it cannot be rearranged by hand.
How to Use Physics Formula Calculator
- 1 Choose “Preset formulas” or “Custom formula” mode at the top.
- 2 Preset: select a formula from the dropdown (e.g. v = u + at, F = ma, V = IR).
- 3 Tap the variable you want to solve for, then fill in the known values.
- 4 Press “Calculate” — the result shows the variable, value, and unit.
- 5 Custom: type an equation like v = u + a*t, pick the unknown, enter the other values, and press “Solve”.
Key Features & Capabilities
- 10 ready-made presets: kinematics, force, work, power, kinetic & potential energy, Ohm's law and density.
- Solve for any variable in each preset — not just the one on the left side.
- Custom equation mode with sin, cos, tan, sqrt, ln, log, pow, ^, pi and e.
- Numeric root-finding solves even equations that cannot be rearranged algebraically.
- Unit labels shown for every variable (m/s, N, J, W, Ω, kg/m³).
- Instant results with friendly error messages for impossible or missing inputs.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Preset Formulas | v=u+at · s=ut+½at² · v²=u²+2as · F=ma · W=Fd · P=W/t · KE=½mv² · PE=mgh · V=IR · ρ=m/V |
| Custom Syntax | Letters for variables; + − * / ^ ( ) and sin cos tan sqrt abs ln log exp pow min max pi e |
| Solver | Closed-form for presets; bisection + Newton numeric solver for custom equations |
| Precision | Results rounded to 6 decimal places |
| Processing | Fully client-side |
Practical Everyday Use Cases
- Homework checks for class 11–12 kinematics and mechanics problems.
- Working back a needed acceleration or force in engineering estimates.
- Quick Ohm's law lookups for electronics breadboarding.
- Solving energy questions (KE, PE) for physics lab reports.
- Testing a non-standard formula in the custom equation mode.
Pro Tips for Best Results
- In the s = ut + ½at² preset, t cannot be isolated directly (it needs a quadratic solve) — use the Quadratic Equation Solver for that case.
- Custom mode finds real-number answers only; if you get “No real solution”, check signs and whether a value of 0 makes the equation invalid.
- Use consistent SI units — mixing km/h with m/s² will produce plausible-looking but wrong numbers.
- The numeric solver scans for real roots across a wide range, so it can solve equations like v = u + a*t for any letter, including ones buried inside the expression.
Common Problems & Solutions
That variable requires a quadratic or higher-order solve in the preset — switch to Custom mode or use the Quadratic Equation Solver.
The values make the unknown imaginary or undefined (e.g. negative under a square root). Recheck the signs and magnitudes entered.
Stick to letters, numbers, + − * / ^ ( ) and the supported functions — avoid units or symbols inside the equation text.
Privacy & Security
100% Client-Side Execution
All computation happens in your browser — equations and values are never sent anywhere.
Frequently Asked Questions
Everything you need to know about using Physics Formula Calculator
v = u + at, s = ut + ½at², v² = u² + 2as, F = ma, W = Fd, P = W/t, KE = ½mv², PE = mgh, V = IR, and ρ = m/V — plus a custom mode for any equation.
Yes — every variable in each preset can be chosen as the unknown, and Custom mode can isolate any letter numerically.
Isolating t needs a quadratic solution, which the preset skips. Type the equation in Custom mode or use the Quadratic Equation Solver.
sin, cos, tan, sqrt, abs, ln, log, exp, pow, min, max — plus the constants pi and e, and ^ for powers.
Yes — each preset variable carries its SI unit (m/s, N, J, W, V, A, Ω, kg/m³) which is shown next to the result.
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