Dark Reader
Music & AudioFree
Generates a dark theme for every website.
4.713,100 reviews7M+
View Extension
Online Calculator
100% free online calculator to help you solve problems like calculating percentages, fractions, exponential functions and more.
Online Calculator screenshots
Overview
Ratings are updated daily and may not reflect the most recent reviews. Share ExtensionWorkflow & Planning5,000 users Add to Chrome Overview 100% free online calculator to help you solve problems like calculating percentages, fractions, exponential functions and more.
Pros
Cons
Who should use Online Calculator?
Pricing
Online Calculator is free. There is no paid tier to consider.
Similar extensions
Adobe Acrobat: PDF edit, convert, sign tools
Music & AudioFreemium
Do more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools.
4.462,900 reviews311M+
View Extension
Google Keep Chrome Extension
Music & AudioFree
Found a webpage, image, or quote that you want to save for later? With the Google Keep Chrome Extension, easily save the things yo.
4.08,000 reviews6M+
View Extension
Adblock for Youtube™
Music & AudioFree
✓ Permissions: like common ad-blocking extensions we do need default permissions on every website to remove ads or popups for exam.
4.4380,500 reviews10M+
View Extension
LastPass: Free Password Manager
Music & AudioFree
LastPass is an award-winning password manager for secure credential management on any device.
4.228,400 reviews8M+
View Extension
Avira Password Manager
Music & AudioFree
Avira Password Manager saves, manages, and syncs all your passwords across all your devices.
3.7562 reviews8M+
View ExtensionFrequently asked questions
Is Online Calculator free?
Yes, Online Calculator is free to use.
Is Online Calculator safe to install?
Online Calculator is published by onlineconvert.com. As with any extension, review the permissions it requests before installing and remove it if you stop using it.
What are the best Online Calculator alternatives?
Browse the Music & Audio category for comparable options.
Related extensions to Online Calculator
Picked from the Music & Audio category and the tags online, calculator — jump straight to the alternatives and head-to-head pages people open next.
Dark Reader alternativesGenerates a dark theme for every website.Adobe Acrobat: PDF edit, convert, sign tools alternativesDo more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools.Google Keep Chrome Extension alternativesFound a webpage, image, or quote that you want to save for later? With the Google Keep Chrome Extension, easily save the things yo.Adblock for Youtube™ alternatives✓ Permissions: like common ad-blocking extensions we do need default permissions on every website to remove ads or popups for exam.All Music & Audio extensionsEvery music & audio extension in the directory, ranked.
Compare Online Calculator with the obvious rivals
Side-by-side feature tables, pricing and a clear recommendation.
Shortlists that include this category
Best Productivity Chrome ExtensionsThe 10 best productivity Chrome extensions in 2026, ranked with live store ratings and install counts. Includes what each is best for and the permissions to check.Best AI Chrome ExtensionsThe best AI Chrome extensions for writing, research and productivity — Monica, Merlin, ChatGPT for Google and more, ranked by usefulness.Best SEO Chrome ExtensionsThe best SEO extensions for Chrome — Ahrefs, MozBar, SEOquake and more, ranked by metrics, audits and ease of use.Best Privacy Chrome ExtensionsThe 9 privacy Chrome extensions worth installing in 2026 — ad blocking, tracker blocking and password vaults, with live store ratings and permission warnings.Best Tab Manager Chrome ExtensionsThe 7 best Chrome tab managers in 2026, compared: collapse tabs to free memory or save restorable workspaces. Live store ratings, install counts and trade-offs.Best Free Chrome Extensions12 genuinely free Chrome extensions — no trial, no locked core feature. Live store ratings and install counts, plus the permissions to check before installing.Best Password Manager Chrome ExtensionsThe best password manager extensions for Chrome in 2026 — Bitwarden, LastPass, 1Password and more, ranked by security, free tier and sync.Best Ad Blocker Chrome ExtensionsThe best ad blockers for Chrome in 2026 — uBlock Origin, Adblock Plus, AdGuard and Ghostery compared on blocking power, memory use and privacy.Best Tab Manager Chrome ExtensionsTame tab overload with the best tab manager extensions for Chrome — OneTab, Toby, Session Buddy and more, ranked by memory savings and organization.Best Screenshot Chrome ExtensionsThe best screenshot extensions for Chrome — GoFullPage, FireShot, Awesome Screenshot and more for full-page captures, annotation and recording.Best VPN Chrome ExtensionsThe best VPN extensions for Chrome — VeePN, Browsec, CyberGhost and more, ranked by speed, privacy and free tier.Best Bookmark Manager Chrome ExtensionsOrganize your links with the best bookmark manager extensions — Raindrop.io, Pocket, Google Keep and more, ranked by features.Best Note Taking Chrome ExtensionsCapture ideas fast with the best note-taking Chrome extensions — Notion, Evernote, Google Keep and Obsidian tools.Best Reading Chrome ExtensionsRead faster and cleaner with the best reading extensions — Reader View, Read Aloud, Pocket and more.Best Focus & Productivity Chrome ExtensionsBlock distractions and get more done with the best focus extensions — StayFocusd, Forest, OneTab and more.Best Screen Capture Chrome ExtensionsCapture screenshots and record your screen with the best Chrome extensions — FireShot, Screencastify and more.Best Privacy & Security Chrome ExtensionsProtect your privacy with the best Chrome extensions — ad blockers, tracker blockers and password vaults, ranked.Best Writing Chrome ExtensionsWrite better everywhere with the best writing extensions — Grammarly, LanguageTool, Text Blaze and more.Best Developer Chrome ExtensionsEssential Chrome extensions for developers — JSON tools, Markdown viewers, web scrapers and more.