Geometry Formulas &
Free Step-by-Step
Calculators
Solve Formulas is a free geometry reference for students, teachers, and anyone prepping for a standardized test. Every calculator shows the full working, not just the final answer, so you understand the method, not just the number.
Point A (x1, y1)
0, 0
Point B (x2, y2)
3, 4
Step 1: d = sqrt((3-0)^2 + (4-0)^2)
Step 2: d = sqrt(9 + 16)
Step 3: d = sqrt(25)
Step 4: d = 5
d = sqrt((x2-x1)^2 + (y2-y1)^2)
0%
Free, no paywall
0+
Worked examples per page
SAT
& ACT test ready
Verified
Against textbooks
What makes these calculators different
Every free geometry calculator here shows full working so you follow the method, not just copy the number. Useful for geometry homework help, SAT prep, and classroom teaching.
Every step is shown
Each calculator walks through the full working so you can follow the method rather than copy a number. If you can follow one example, you can solve the next one yourself.
Proofs, not just formulas
We include the derivation for each formula -- usually just a few lines -- because knowing where a formula comes from makes it much harder to forget.
Checked against standard textbooks
Results are verified against standard curriculum textbooks. If you find an error, the contact page goes straight to the editorial team.
Works for homework, tests, and teaching
Whether you're checking homework, preparing for the SAT, or explaining coordinate geometry to a class, the calculators and proofs work for any student or teacher.
Free Geometry Formula Calculators
The tools students rely on for homework, class notes, and test prep. Every calculator is free, no signup, no paywall.
This library covers basic geometry formulas for shapes and solids, coordinate geometry formulas like the distance and midpoint formulas, and standardized-test essentials. Every page includes a free geometry calculator that shows step-by-step working, so you follow the method, not just the number. Start with the distance formula calculator- it's the most-used tool on the site and doubles as a geometry formula sheet for coordinate geometry.
Browse by Category
Geometry formulas organized by topic. Each category will have calculators, proofs, and worked examples.
Coordinate Geometry
Formulas for points and lines on the Cartesian plane.
- Distance FormulaLive
- Midpoint FormulaSoon
- Slope FormulaSoon
- Circle EquationSoon
Plane Geometry
Area and perimeter formulas for 2D shapes.
- Triangle AreaSoon
- Circle FormulasSoon
- Pythagorean TheoremSoon
- QuadrilateralsSoon
Solid Geometry
Volume and surface area for 3D shapes.
- Cylinder VolumeSoon
- Sphere FormulasSoon
- Cone VolumeSoon
- Pyramid & PrismSoon
Study by Exam
Every formula page includes exam-specific tips. The distance formula page covers the most-tested coordinate geometry concepts across all major standardized tests.
Frequently Asked Questions
Everything you need to know about our free geometry formula calculators.
Are these geometry calculators really free to use?
Yes, 100%. All calculators, formulas, and step-by-step explanations are completely free for students, teachers, and professionals. No sign-up, no paywall.
Do the calculators show the work or just the final answer?
Our calculators are built specifically for learning. They show every step of the calculation, so you can see exactly how to solve similar problems on your own.
Can I use these tools for SAT or ACT test prep?
Absolutely. We cover all the core geometry formulas tested on major standardized exams, complete with SAT-specific tips in each formula's dedicated page.
How accurate are the results?
Our tools use high-precision math libraries and have been verified against standard textbooks to ensure mathematical accuracy.
Is there a geometry formulas cheat sheet I can use?
Each formula page doubles as a cheat sheet. The formula is displayed prominently at the top of the page, and there is a quick-reference summary box you can refer back to. For SAT prep, start with the distance formula page -- it covers the most-tested coordinate geometry concepts.
Ready to solve a formula?
Jump into the interactive calculator. Every step shown, completely free, no signup required.