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Time helper

Time Unit Converter

Convert time values across multiple units by entering a single number.
You can instantly convert between milliseconds, seconds, minutes, hours, days, and weeks, with all results updating automatically.

This tool is useful for estimating durations, checking time calculations, and converting values found in logs, configuration files, or documentation.
By selecting the source unit, all other units are recalculated in real time, allowing quick comparison without manual math.

All calculations are performed directly in your browser.
No input values are sent to any server, making this converter fast, simple, and safe for everyday development and reference use.

Guide: How to use & features

  • Select the source unit and enter a value to update all other units automatically.
  • Extremely large or small numbers are shown in scientific notation for readability.
  • Copy any converted value directly into your notes or scripts.

Samples: Sample input & output

Convert seconds to minutes

Input

7,200 seconds

Output

120 minutes (2 hours)

FAQ: Frequently asked questions

  • Do you support milliseconds and smaller units?

    Yes. Conversions include seconds, milliseconds, microseconds, and nanoseconds.

  • How accurate are the conversions?

    Calculations rely on JavaScript number precision; extremely large values may be rounded.

  • Can I copy individual results?

    Use the copy control next to each line to grab the unit you need.

Use cases: Common use cases

  • Converting durations

    Switch between seconds, minutes, hours, and days to reason about rate limits or TTLs.

  • Interpreting logs

    Turn millisecond or nanosecond values into readable units to grasp latency and timing.

  • Double-checking inputs

    Verify numeric inputs correspond to the intended duration before saving configurations.

Notes: Notes & limitations

  • Work stays in your browser

    Inputs and outputs remain local. Closing the tab or clearing cache will remove any temporary state.

  • Validate critical data

    Results are helper outputs—double-check them before sending to production systems or sharing externally.

  • Large payloads depend on your device

    Very large text or files can feel slow in some browsers. Use a desktop environment for heavy workloads.

Converted values

Updated automatically

Time Unit Converter

Timeouts, cache TTLs, retry delays, monitoring intervals, animation durations, and job schedules often use different units. This converter helps translate milliseconds, seconds, minutes, hours, and days so settings are easier to review before they reach production.

Common use cases

  • Check timeouts: Convert 30000ms to 30 seconds or 5 minutes to 300000ms.
  • Review cache TTLs: Translate Redis, CDN, API, or browser cache values into readable durations.
  • Verify polling intervals: Confirm retry delays, cron-related intervals, and monitoring windows.

Unit mistakes are common

Some libraries expect milliseconds while others expect seconds. Before pasting a value into configuration, check the documentation and convert the number into the exact unit the system expects.

Articles for this tool

Introduction
2026-05-09

How to Convert Milliseconds, Seconds, Minutes, and Hours for Timeouts and TTLs

Convert time units for API timeouts, cache TTLs, retry delays, polling intervals, and monitoring settings without mixing up milliseconds and seconds.

Recent Articles

Use Case
2026-08-04

CREATE TABLE Reference: MySQL vs PostgreSQL vs SQLite Types & Constraints

A cross-database CREATE TABLE (DDL) reference with cheat sheets for data types, auto-increment keys (AUTO_INCREMENT / IDENTITY / rowid), foreign key ON DELETE behavior, and the CHECK constraint that MySQL silently ignores.

Introduction
2026-08-03

How CREATE TABLE Generation From a Visual Table Design Works | DDL Builder

A look inside DDL Builder, which turns a visually designed table into CREATE TABLE statements and an ER diagram. Covers the MySQL/PostgreSQL/SQLite type-mapping rules and the column-inference algorithm used for JSON samples.

Use Case
2026-07-21

GitHub Actions needs Design Patterns: Speed Up CI, Avoid the Anti-Patterns

A pattern reference for GitHub Actions job dependencies (needs). Covers diamond-shaped fan-out, concurrency cancellation, fail-fast tradeoffs, matrix-plus-needs gotchas, and reusable workflows, with copy-paste YAML examples.

Use Case
2026-07-21

SQL JOIN Types: Complete Reference to INNER, LEFT, RIGHT & FULL

A reference for SQL JOIN types (INNER/LEFT/RIGHT/FULL/CROSS/SELF) with a cheat sheet and row-count walkthroughs. Covers why one-to-many joins duplicate rows, the WHERE-vs-ON NULL trap, and how to write multi-table joins.

Introduction
2026-07-16

Case Converter: camelCase, snake_case & kebab-case — 9 Styles at Once

Convert identifiers between camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case and more — all nine styles side by side. Handles acronym runs like HTTPServer, digits, and bulk multi-line conversion.

Introduction
2026-07-16

LLM API Cost Calculator: Compare Claude, GPT & Gemini Pricing Side by Side

Paste a prompt, set the expected output tokens, and compare per-request API costs across Claude, GPT and Gemini models. Covers input/output pricing structure, auto-updated price tables, and estimate limits.

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