CalcTape Web

What is CalcTape Web?

CalcTape Web is a smart online calculator with a notes function – a digital calculation tape. Unlike an ordinary calculator, CalcTape shows the entire calculation: every line stays visible, can be annotated and corrected at any time. Change a value and everything is recalculated automatically. The result is transparent, verifiable calculations right in your browser – free and with no installation.

Features

• A tape instead of a display: every intermediate step stays visible.
• Comment: label each line in plain text.
• Correct: change values later, everything recalculates.
• Share: pass on entire calculations via a link.
• Multilingual: Deutsch, English, Español, Français, Italiano, Português, हिन्दी.
• Use it anywhere: installable as an app (PWA) and available offline.

Frequently asked questions

How much does CalcTape Web cost?

CalcTape Web is free and runs right in your browser, no sign-up required.

How is CalcTape different from a normal calculator?

CalcTape shows the whole calculation as a tape – with comments and lines you can correct afterwards, instead of just a final result.

Does CalcTape Web work offline?

Yes. As a Progressive Web App it can be installed and used offline.

Does CalcTape Web work on smartphones?

Yes. However, the on-screen keyboard in the mobile browser can interfere with input – for on-the-go use, we recommend our CalcTape apps designed specifically for iOS and Android.

Manual

Detailed guides are in the user manual: Deutsch, English, Español, Français, Italiano, Português, हिन्दी.