Shapes and
space, solved.
Area, circumference and volume for circles, cylinders, spheres and rooms. Free, instant, and private.
Jean Borg
Founder & developer · How I build these →
Geometry · example
Square footage
Floor area
240 sq ft
20 ft × 12 ft room
4
Geometry tools
100%
Free, no sign-up
0
Data stored
1 hr
To build a request
All 4 tools
Browse every geometry calculator.
Transparent math
Every shape,
shown step by step.
No black boxes. Every tool shows the exact method or formula it used – so you can check it, trust it, and learn it.
Try the Square Footage ›# Circle
C = 2πr
# Cylinder
V = πr²h
# Sphere
V = 4/3 · πr³Questions
Geometry questions.
Are these geometry calculators really free?
+
Yes – every one is completely free, with no sign-up, no account, and no paywalled results.
How accurate are the results?
+
They use standard geometric formulas and are accurate for the dimensions you enter.
Is my data saved anywhere?
+
No. Every calculation runs locally in your browser – nothing you enter is stored or sent anywhere.
Can you add a geometry calculator I need?
+
Yes – request it via the contact page and it can be built and made live fast, free of charge.
The developer
Built by a real person.
Jean Borg
Founder & developer · freecalculators.pro · Malta
I build and maintain every calculator on this site myself, from my desk in Malta. No faceless company and no outsourced content – each tool is coded by hand, shows the exact formula it uses, and gets fixed the moment something’s off. Need a calculator that isn’t here yet? Email me and it’s usually live within the hour, free.
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