GeometryFormula

Geometry Formula Sheet Builder

Build a clean, printable geometry formula sheet in seconds. Check the shapes and topics you need — or load an exam preset — and print a one-page A4 or US Letter cheat sheet. Every formula is verified, and your selection saves to the URL so you can share it.

1 · Choose a preset

2 · Pick your formulas

2D shapes
3D solids
Coordinate geometry
Right triangles & trig

3 · Print or share

“Print / Save PDF” opens your browser’s print dialog — choose your printer, or “Save as PDF”. No sign-up, no watermark.

Geometry Formula Sheet

Verified formulas · GeometryFormula.com

Rectangle
AreaA=l⋅wA = l \cdot w
PerimeterP=2(l+w)P = 2(l + w)
Diagonald=l2+w2d = \sqrt{l^2 + w^2}
Triangle
Area (base & height)A=12bhA = \tfrac{1}{2} b h
Area (Heron’s)A=s(s−a)(s−b)(s−c)A = \sqrt{s(s-a)(s-b)(s-c)}
Semiperimeters=a+b+c2s = \dfrac{a+b+c}{2}
PerimeterP=a+b+cP = a + b + c
Circle
AreaA=πr2A = \pi r^2
CircumferenceC=2πrC = 2\pi r
Diameterd=2rd = 2r
Rectangular prism
VolumeV=lwhV = l w h
Surface areaSA=2(lw+lh+wh)SA = 2(lw + lh + wh)
Space diagonald=l2+w2+h2d = \sqrt{l^2 + w^2 + h^2}
Cylinder
VolumeV=πr2hV = \pi r^2 h
Lateral surfaceLSA=2πrhLSA = 2\pi r h
Surface areaSA=2πr(r+h)SA = 2\pi r(r + h)
Cone
Slant heightℓ=r2+h2\ell = \sqrt{r^2 + h^2}
VolumeV=13πr2hV = \tfrac{1}{3}\pi r^2 h
Lateral surfaceLSA=πrℓLSA = \pi r \ell
Surface areaSA=πr(r+ℓ)SA = \pi r(r + \ell)
Sphere
VolumeV=43πr3V = \tfrac{4}{3}\pi r^3
Surface areaSA=4πr2SA = 4\pi r^2
Distance formula
Distanced=(x2−x1)2+(y2−y1)2d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}
Midpoint formula
MidpointM=(x1+x22,y1+y22)M = \left(\dfrac{x_1 + x_2}{2}, \dfrac{y_1 + y_2}{2}\right)
Slope
Slopem=y2−y1x2−x1m = \dfrac{y_2 - y_1}{x_2 - x_1}
Pythagorean theorem
Right trianglea2+b2=c2a^2 + b^2 = c^2
Free printable geometry formulas · GeometryFormula.com · CC BY-SA 4.0

Exam presets

Studying for a specific test? Each preset loads the formulas on (or aligned to) that exam’s official reference sheet, then lets you add extras and print.

NY RegentsTexas STAARSATACTEOCVirginia SOLPA KeystoneBasic (Middle School)Complete (High School)

Frequently asked questions

How do I make a geometry formula sheet?

Check the shapes and topics you need on the left (or load an exam preset), and the printable sheet updates live on the right. Then click Print / Save PDF to print a clean A4 or US Letter page.

Is the formula sheet free to print?

Yes. There is no sign-up, no watermark, and no cost. Print it or save it as a PDF from your browser’s print dialog as many times as you like.

Can I share the exact sheet I built?

Yes. Your selections are saved in the page URL, so “Copy shareable link” gives a link that reopens the builder with the same shapes and topics checked.

Which exams have presets?

Regents, STAAR, SAT, ACT, EOC, Virginia SOL, and Pennsylvania Keystone, plus Basic (middle school) and Complete (high school) sets. Each preset loads the formulas aligned to that exam.