We're no longer sharing our impact calculator | GiveWell                    jQuery.extend(Drupal.settings, {"basePath":"\/","pathPrefix":"","ajaxPageState":{"theme":"gw_basic","theme_token":"MOlByRfDCaaQ0cP0XIlJ4YIDspoUtBLYnens5MI4gjo","js":{"https:\/\/web.archive.org.\/web\/20211205110647\/https:\/\/unpkg.com\/@popperjs\/core@2":1,"https:\/\/web.archive.org.\/web\/20211205110647\/https:\/\/unpkg.com\/tippy.js@6":1,"public:\/\/google_tag\/google_tag.script.js":1,"sites\/all\/modules\/contrib\/jquery_update\/replace\/jquery\/1.10\/jquery.min.js":1,"misc\/jquery-extend-3.4.0.js":1,"misc\/jquery-html-prefilter-3.5.0-backport.js":1,"misc\/jquery.once.js":1,"misc\/drupal.js":1,"sites\/all\/modules\/contrib\/jquery_update\/replace\/ui\/ui\/minified\/jquery.ui.core.min.js":1,"sites\/all\/modules\/contrib\/jquery_update\/replace\/ui\/ui\/minified\/jquery.ui.widget.min.js":1,"sites\/all\/modules\/contrib\/eu-cookie-compliance\/js\/jquery.cookie-1.4.1.min.js":1,"sites\/all\/modules\/contrib\/jquery_update\/replace\/ui\/ui\/minified\/jquery.ui.accordion.min.js":1,"sites\/all\/modules\/contrib\/resp_img\/resp_img.js":1,"sites\/all\/modules\/custom\/givewell_add_querystring\/js\/givewell_add_querystring.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/modernizr.custom.74085.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/mean-menu\/jquery.meanmenu.min.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/jquery-migrate-1.0.0.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/jquery-validation\/dist\/jquery.validate.min.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/multiselect\/jquery.multiselect.min.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/dropkick.js":1,"sites\/all\/themes\/gw_basic\/scripts\/lib\/jquery.pep.js":1,"sites\/all\/themes\/gw_basic\/scripts\/main.js":1},"css":{"modules\/system\/system.base.css":1,"modules\/system\/system.menus.css":1,"modules\/system\/system.messages.css":1,"modules\/system\/system.theme.css":1,"misc\/ui\/jquery.ui.core.css":1,"misc\/ui\/jquery.ui.theme.css":1,"misc\/ui\/jquery.ui.accordion.css":1,"modules\/aggregator\/aggregator.css":1,"modules\/comment\/comment.css":1,"modules\/field\/theme\/field.css":1,"sites\/all\/modules\/contrib\/footnotes\/footnotes.css":1,"modules\/node\/node.css":1,"modules\/search\/search.css":1,"modules\/user\/user.css":1,"sites\/all\/modules\/contrib\/views\/css\/views.css":1,"sites\/all\/modules\/contrib\/ckeditor\/css\/ckeditor.css":1,"sites\/all\/modules\/contrib\/ctools\/css\/ctools.css":1,"sites\/all\/modules\/contrib\/taxonomy_access\/taxonomy_access.css":1,"sites\/all\/modules\/contrib\/content_type_extras\/css\/content_type_extras.css":1,"sites\/all\/modules\/contrib\/print\/print_ui\/css\/print_ui.theme.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/normalize.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/gw-fonts.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/html.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/global.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/meanmenu.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/page-layout.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/html-colors.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/pages\/pages.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/pages\/new-home.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/pages\/new-top-charities.css":1,"sites\/all\/themes\/gw_basic\/styles\/sitesearch.css":1,"sites\/all\/themes\/gw_basic\/styles\/formstack.css":1,"sites\/all\/themes\/gw_basic\/styles\/custom.css":1,"sites\/all\/themes\/gw_basic\/styles\/eu_cookie_compliance.css":1,"sites\/all\/themes\/gw_basic\/styles\/css\/global\/admin.css":1}},"respImg":{"default_suffix":"","current_suffix":false,"forceRedirect":false,"forceResize":false,"reloadOnResize":false,"useDevicePixelRatio":false,"suffixes":{"":1}},"smart_ip":{"location":{"country_code":"US","country":"United States","region":"","region_code":"","city":"","zip":"","latitude":"","longitude":"","time_zone":"","is_eu_country":false,"continent":"NA","source":"smart_ip","ip_address":"54.211.101.93","timestamp":1638702407,"is_gdpr_country":false}},"smart_ip_src":{"smart_ip":"smart_ip","geocoded_smart_ip":"geocoded_smart_ip","w3c":"w3c"},"urlIsAjaxTrusted":{"\/impact-calculator":true}});       Jump to Navigation          GiveWell        Top CharitiesOur Top Charities Giving 101  Maximum Impact Fund ResearchResearch Overview Research on Programs Cost-Effectiveness Analyses How We Produce Impact Estimates GiveWell Incubation Grants All GiveWell Grants  Our Mistakes AboutAbout GiveWell Our People Information About Donating General FAQ Rollover Funds FAQ Values Official Records Jobs Contact Us Stay Updated  Blog Ways to GiveOverview of Giving Options Credit Card Check Bank Transfer Cryptocurrency Securities/Stock PayPal Wills and Bequests Donate a Vehicle Donor Advised Fund (DAF)           Enter search terms here.   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            You are hereHome » We're no longer sharing our impact calculator We're no longer sharing our impact calculator               We’re no longer sharing GiveWell’s impact calculator. 

 We’ve been working to improve how we communicate impact. We’ve decided to use impact estimates based on grants that GiveWell has made from our Maximum Impact Fund or has recommended to Open Philanthropy. By using only past grants, we can share more concrete estimates of impact than if we’re trying to guess what the future impact of a donation will be. 

 Backward-looking estimates don’t fit well into our impact calculator design, which offered donors an estimate of what their donation will accomplish in the future. We’re looking into building alternate tools to communicate impact clearly and accurately. 

 To see our current estimates, and learn more about how we produce impact numbers, see How we produce impact estimates.

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