Converting Seconds to Milliseconds
JavaScript and many programming languages use milliseconds for timing functions. When you think in seconds but code requires milliseconds, this conversion is essential.
The conversion: 1 second = 1,000 milliseconds. Multiply seconds by 1,000.
Programming Uses
- setTimeout() - Delay execution in JavaScript
- setInterval() - Repeat at intervals
- CSS animations - Transition durations
- API throttling - Rate limit delays
- Game loops - Frame timing
Reference Table
| Seconds | Milliseconds |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 30 | 30,000 |
How to Convert Seconds to Milliseconds
Steps
- Enter seconds you want to delay
- See milliseconds for your code
- Copy into setTimeout, setInterval, etc.
The Formula
Milliseconds = Seconds × 1,000
Examples
- 2 seconds: 2 × 1,000 = 2,000 ms
- 0.5 seconds: 0.5 × 1,000 = 500 ms
- 30 seconds: 30 × 1,000 = 30,000 ms
Code Example
For a 3-second delay in JavaScript:
setTimeout(() => {
console.log('3 seconds passed');
}, 3000); // 3 seconds = 3000ms
Features
Direct Multiplication
Clean × 1,000 conversion - no complex math.
Instant Results
Milliseconds appear immediately as you type.
Reversible
Swap to convert milliseconds to seconds.
Copy Ready
Copy directly into your code editor.
Reference Table
Common second-to-ms conversions displayed.
Developer Friendly
- Clean integers - No decimal hassle
- Fast lookup - Quicker than mental math
- Error-free - No typos in zeros
Frequently Asked Questions
How many milliseconds in 1 second?
1 second equals exactly 1,000 milliseconds.
What is 5 seconds in milliseconds?
5 seconds equals 5,000 milliseconds.
Why does JavaScript use milliseconds?
Milliseconds provide precision for animations and events. It's easier to work with whole numbers (1000ms) than decimals (1.0s).
What is 0.5 seconds in milliseconds?
Half a second equals 500 milliseconds.
How do I set a 1-minute timer in JavaScript?
1 minute = 60 seconds = 60,000 milliseconds. Use setTimeout(fn, 60000).
What is 100ms in seconds?
100 milliseconds equals 0.1 seconds, or one-tenth of a second.
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