Mirror Equation Solver
Solve 1/f = 1/d₀ + 1/dᵢ, f = R/2 step by step — free mirror equation solver with worked examples, real-world defaults and instant answers.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Concave mirror equation with magnification.
About Mirror Equation Solver
The Mirror Equation Solver solves 1/f = 1/d₀ + 1/dᵢ, f = R/2 for you with the full working shown — every substitution, every unit, every step, exactly the way a good teacher writes it on the board. A mirror's focal length is half its curvature radius — no refractive index involved, so mirrors never suffer chromatic aberration; that's why every large telescope is a reflector.
How to use Mirror Equation Solver
- 1Enter your known values in the input fields (sensible real-world defaults are pre-filled).
- 2The tool substitutes them into 1/f = 1/d₀ + 1/dᵢ, f = R/2 and recomputes live.
- 3Read the answer in the result box, then expand the step-by-step solution to see the full working.
- 4Copy the method into your notebook, or change inputs to explore how the result behaves.
Why use Mirror Equation Solver?
- ✓Solves 1/f = 1/d₀ + 1/dᵢ, f = R/2 instantly as you type — no submit button, no waiting
- ✓Step-by-step solution shown for every calculation, not just the final answer
- ✓Realistic example values pre-loaded so you can see a worked example immediately
- ✓100% free, no sign-up, runs entirely in your browser — your numbers never leave your device
- ✓Mobile-friendly and fast enough to use mid-homework or mid-lesson
Frequently asked questions
What formula does the Mirror Equation Solver use?+
It uses 1/f = 1/d₀ + 1/dᵢ, f = R/2. The steps section shows the formula with your actual numbers substituted, so you can follow (and verify) every stage of the calculation rather than trusting a black box.
What should I keep in mind when using this calculator?+
A mirror's focal length is half its curvature radius — no refractive index involved, so mirrors never suffer chromatic aberration; that's why every large telescope is a reflector. Defaults: object at 18 cm before a 12 cm-focus concave mirror throws a real, doubled image at 36 cm.
Is the Mirror Equation Solver free to use?+
Completely free, with no sign-up or limits. All computation happens client-side in your browser, so it is fast, private, and works even on slow connections once the page has loaded.
Can I use this for homework, teaching or exam prep?+
That is exactly what it is built for. The step-by-step working mirrors how solutions are presented in class, so you can check homework, build worked examples for teaching, or practise method recall before exams.
Embed Mirror Equation Solver on your website
Want Mirror Equation Solveron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/mirror-equation-solver" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Mirror Equation Solver — ToolJolt" loading="lazy"></iframe>Related Science tools
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