--- title: Intro to Date-to-Instant and Instant-to-Date Converters description: A practical guide to converting between Java's legacy Date class and the modern Instant class from java.time. Covers both directions using toInstant() and... canonical: https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Intro to Date-to-Instant and Instant-to-Date Converters | daily.dev og:description: A practical guide to converting between Java's legacy Date class and the modern Instant class from java.time. Covers both directions using toInstant() and... og:url: https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m og:image: https://api.daily.dev/og/posts/dTliDqP8m.png og:image:alt: Intro to Date-to-Instant and Instant-to-Date Converters og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Intro to Date-to-Instant and Instant-to-Date Converters **[Baeldung](https://daily.dev/sources/baeldung)** · 4 min read · 0 upvotes · 0 comments ## Summary A practical guide to converting between Java's legacy Date class and the modern Instant class from java.time. Covers both directions using toInstant() and Date.from(), explains the precision difference (milliseconds vs nanoseconds), and demonstrates null-safe utility class design with JUnit 5 tests validating round-trip conversions and nanosecond truncation behavior. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Migration of Android App from Java Time API to Kotlin Time](https://daily.dev/posts/migration-of-android-app-from-java-time-api-to-kotlin-time-7f9sg4uyl) · ProAndroidDev · 0 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java) [View this post on daily.dev](https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Intro to Date-to-Instant and Instant-to-Date Converters","url":"https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m"},"datePublished":"2026-03-07T04:30:06.454Z","dateModified":"2026-03-07T04:32:47.258Z","description":"A practical guide to converting between Java's legacy Date class and the modern Instant class from java.time. Covers both directions using toInstant() and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d2513ec29c7dabab8eea6c36fbb263da?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d2513ec29c7dabab8eea6c36fbb263da?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Baeldung","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Baeldung","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/52cccfb454d946c4b7dfa5e816f9e576","url":"https://daily.dev/sources/baeldung"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/intro-to-date-to-instant-and-instant-to-date-converters-dtlidqp8m","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Baeldung","item":"https://daily.dev/sources/baeldung"},{"@type":"ListItem","position":3,"name":"Intro to Date-to-Instant and Instant-to-Date Converters"}]} ```