Who is OrbitCalc for?

OrbitCalc is a consumer product built for firefox users who need a scientific calculator.

Yes — OrbitCalc is free to use.

What platforms does OrbitCalc run on?

OrbitCalc runs on the web and embeddable surfaces.

Is OrbitCalc still active?

Unverified. OrbitCalc has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who develops OrbitCalc?

OrbitCalc is developed by Jessi.

How long has OrbitCalc been around?

OrbitCalc first shipped in 2026.

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OrbitCalc

Name: OrbitCalc
Author: Jessi

mozilla.orgOther productivity

OrbitCalc is a Firefox extension for calculating scientific expressions from the browser toolbar or a dedicated tab. It supports DEG/RAD modes, parentheses, powers, roots, logarithms, trigonometry, memory, and local calculation history.

FreeWebEmbeddableCloud-managed

Visit mozilla.org

Overview

10 features

OrbitCalc is an Other productivity project. It focuses on performing scientific calculations quickly from the Firefox toolbar without switching applications. OrbitCalc is a consumer product aimed at firefox users who need a scientific calculator. OrbitCalc is free to use. It runs on the web and embeddable surfaces.

Behind OrbitCalc is Jessi, and it first shipped in 2026. Key capabilities include scientific expressions, DEG/RAD modes, and memory functions. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Scientific expressions
DEG/RAD modes
Memory functions
Calculation history
Toolbar access
Dedicated tab
Trigonometry
Logarithms
Roots and powers
Clipboard input

Built with & integrations

Runs on

BrowserEmbeddableCloud-managed

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 01:08 UTC
OrbitCalc verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about OrbitCalc

What does OrbitCalc do?: OrbitCalc focuses on performing scientific calculations quickly from the Firefox toolbar without switching applications. It is catalogued under Other productivity on PulseGate.
Who is OrbitCalc for?: OrbitCalc is a consumer product built for firefox users who need a scientific calculator.
Is OrbitCalc free?: Yes — OrbitCalc is free to use.
What platforms does OrbitCalc run on?: OrbitCalc runs on the web and embeddable surfaces.
Is OrbitCalc still active?: Unverified. OrbitCalc has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who develops OrbitCalc?: OrbitCalc is developed by Jessi.
How long has OrbitCalc been around?: OrbitCalc first shipped in 2026.
What languages does OrbitCalc support?: The interface is available in 32 languages, including Czech, German, and Greek.

At a glance

Pricing: Free
Platforms: Web
First seen: 9 Sept 2026
Built for: Firefox users who need a scientific calculator
Model: B2C
Solves: Performing scientific calculations quickly from the Firefox toolbar without switching applications.

Registered as

Firefox Add-ons: orbitcalc

Developer

Jessi

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: orbitcalc-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/orbitcalc

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