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Calculators / Scientific calculator6 tools

Best online scientific calculators

Trigonometry, powers, roots and logarithms in the browser. Facts come from each tool's own pages, and every score says where it comes from. How we rank

Tools
6
Researched
3
Free option
3
Only listed
3

Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.

Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works

Quick answer

  • No signup needed: GeoGebra, Web2.0calc

Based on what each tool's own pages say. A tool is left out when its pages say it varies or do not say. Details are listed under each tool.

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Want two of these head to head? Compare tools side by side.

  • 1

    GeoGebra

    Free optionNo signupFile handling unclearHealth 4.2
    Open GeoGebra
    Details and sources
    Free tier
    Terms say website content is made available free of charge. The pages do not mention the calculators specifically.
    Paid plan
    Not stated. Terms say commercial use needs a special license arranged by contacting GeoGebra; no prices given.
    Signup
    Privacy policy says you do not need to register or sign in to use the software and resources; student work is saved only with an account.
    Watermark
    Not stated.
    Where files go
    Personal information is held on GeoGebra's servers in Austria and on third-party servers in other countries. Closed accounts are deactivated and unneeded data deleted. No retention period given for logs or analytics.

    From the tool's own pages, checked 2026-11-01. Sources: Privacy policy, Terms of service. Prices and limits change; check the tool before you rely on them.

    Full page for GeoGebra

  • 2

    Web2.0calc

    Free optionNo signupFile handling unclearHealth 4
    Open Web2.0calc
    Details and sources
    Free tier
    A free account (no credit card) gives access to the community forum. The pricing page lists no usage limits for the calculator and does not say whether free users see ads on it.
    Paid plan
    Plus is listed at 0.50 euro per month or a 6 euro one-time payment (VAT included where applicable). It removes advertising and tracking across web2.0calc sites, expires with no renewal, and is sold through resellers. Enterprise is a custom quote.
    Signup
    No account needed to use the online offer; the privacy page says it can be used without disclosing your identity. Accounts are optional (forum, Plus purchase).
    Watermark
    Not stated.
    Where files go
    Site runs on Hetzner servers in Germany. Anonymized IP addresses are held in RAM and deleted after 60 minutes. Google ad cookies are used only for non-paying users who consent. The pages do not say where calculator inputs are processed.

    From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy, Terms. Prices and limits change; check the tool before you rely on them.

    Full page for Web2.0calc

  • 3

    Symbolab

    Free optionSignup unclearFile handling unclearHealth 3.8
    Open Symbolab
    Details and sources
    Free tier
    Terms say there is a free tier alongside premium access, but the page does not list what each includes.
    Paid plan
    Premium is a paid subscription; prices Not stated. Cancelling keeps access until the billing period ends; prepaid fees are not refunded.
    Signup
    Terms say subscriptions require a user account; they also describe users without an account. Not clearly stated for the listed task.
    Watermark
    Not stated.
    Where files go
    Not stated.

    From the tool's own pages, checked 2026-11-01. Sources: Terms of use. Prices and limits change; check the tool before you rely on them.

    Full page for Symbolab

Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.

Also listed (3, not yet tested)

Each of these answered when we visited its site. We have not tested them or recorded facts, so they are in alphabetical order, not ranked.

  • Desmos

    Desmos Studio builds free Graphing, Scientific, Geometry, and 3D Calculators along with Notebook. Explore our tools, partner with us, or explore examples for inspiration.

    Open
  • RapidTables

    Online reference and tools - calculators, converters, math, electricity, web design

    Open
  • Wolfram Alpha

    Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals.

    Open

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