Your calculations, everywhere.
A modern calculator that saves every calculation, syncs across all your devices, and works offline. Fast, reliable, and always at your fingertips.
Everything you need in a calculator
Cloud History
Every calculation saved automatically. Search, label, and organize your math.
Cross-Device Sync
Start on your phone, continue on your laptop. Real-time sync across all devices.
Offline-First
Works without internet. Your calculations sync when you reconnect.
5 Platforms
iOS, Android, macOS, Windows, and Web. One calculator, everywhere.
Anonymous-First
No sign-up required. Start calculating instantly, create an account when you're ready.
One calculator, everywhere
Native experience on every platform. Your calculations sync seamlessly across all your devices.
What people are saying
"I switch between my phone and laptop constantly. Cloud Calculator just works everywhere — my calculations are always there."
"No account needed, no tracking, no cookies. Finally a calculator that respects my privacy."
"Even without internet on flights, everything works. When I land, it syncs automatically."
Frequently asked questions
Is Cloud Calculator really free?
Yes, 100% free. No ads, no premium tier, no hidden fees. All features available to everyone.
How does sync work across devices?
Your calculations sync in real-time via the cloud. Make a calculation on your phone, see it instantly on your laptop. Works across all 5 platforms.
What about my privacy?
We take privacy seriously. No cookies, no client-side tracking, no data selling. Your calculations are yours. Read our privacy policy for full details.
Do I need to create an account?
No. Cloud Calculator works fully in anonymous mode. Create an account only if you want cross-device sync — just enter your email, get a magic code, done.
What happens when I’m offline?
Everything works. Cloud Calculator is offline-first — your data is always stored locally. When you reconnect, it syncs automatically.
What platforms are supported?
iOS, Android, macOS, Windows, and Web. One codebase, native experience on every platform.
Ready to try Cloud Calculator?
Start calculating across all your devices. Free, private, and always available — even offline.