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Convert seconds to hh:mm:ss format

Written byPhuoc Nguyen
15 May, 2020
Last updated
13 Oct, 2021
Date Time
JavaScript version
// `s` is number of seconds
const formatSeconds = (s) => new Date(s * 1000).toISOString().substr(11, 8);

// Or
const formatSeconds = (s) => new Date(s * 1000).toUTCString().match(/(\d\d:\d\d:\d\d)/)[0];

// Or
const formatSeconds = (s) =>
[parseInt(s / 60 / 60), parseInt((s / 60) % 60), parseInt(s % 60)].join(':').replace(/\b(\d)\b/g, '0$1');
TypeScript version
const formatSeconds = (s: number): string => new Date(s * 1000).toISOString().substr(11, 8);

// Or
const formatSeconds = (s: number): string => (new Date(s * 1000).toUTCString().match(/(\d\d:\d\d:\d\d)/) as string[])[0];

// Or
const formatSeconds = (s: number): string => (
[parseInt(`${s / 3600}`), parseInt(`${(s / 60) % 60}`), parseInt(`${s % 60}`)].join(':').replace(/\b(\d)\b/g, '0$1')
formatSeconds(200); // 00:03:20
formatSeconds(500); // 00:08:20
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