How long is a year in seconds?

This tool uses 1 year = 365 days = 31,536,000 seconds for simplicity. For average Gregorian year use 365.25 days (31,557,600 seconds).

Time Converter

Q: How do I convert hours to minutes?

Enter the value, choose Hour (h) as From and Minute (min) as To. The tool multiplies by 60 because 1 hour equals 60 minutes. For example 2 hours is 120 minutes.

Q: How many seconds are in a day?

One day equals 86,400 seconds (24 hours x 60 minutes x 60 seconds). One week equals 604,800 seconds. This converter uses those exact factors.

Q: What precision does the converter display?

Results are shown up to 9 decimal places with trailing zeros trimmed. Very large or very small values switch to exponential notation to preserve readability without losing precision.

Q: Is my conversion sent to a server?

No. All math runs locally in your browser with JavaScript. Your numbers and selected units are never transmitted, stored or logged anywhere. Closing the tab or clicking Clear removes them from memory immediately.

Q: Can I convert in both directions?

Yes. Choose any unit as From and any as To. Use the swap button to reverse instantly. The All Units matrix below always shows your input converted into every other time unit at once.

Convert time instantly between milliseconds, seconds, minutes, hours, days, weeks, and years. Type a value, pick units, and see all 7 conversions live - all processing stays in your browser.

Amount

Enter any number - commas ignored, decimals accepted

From

Source unit

Target unit

Result

60 min

1 h = 60 min

Formulah x 60 = min

Calculation1 x 60 = 60

Base (seconds)3,600 s

All Units 1 h in every unit

Technical Specifications

Conversion factors and display rules used for every calculation.

Specification	Details
Supported units	Millisecond (ms), Second (s), Minute (min), Hour (h), Day (day), Week (week), Year (year) - 7 units
Base unit	Second (s). All conversions go through seconds.
Factors to second	ms 0.001, s 1, min 60, h 3600, day 86400, week 604800, year 31536000
Formula	result = amount x (fromFactor / toFactor)
Precision	Double precision (IEEE 754). Display up to 9 decimal places, trailing zeros trimmed; exponential for \|n\| >= 1e12 or \|n\| < 1e-6
Input handling	Commas ignored, decimal points accepted, negatives allowed. Empty or invalid shows helper message. Update is live on input.
Matrix	Every keystroke also recomputes the All Units grid.
Processing location	100% client-side JavaScript in your browser memory; nothing is uploaded
Export	Copy result to clipboard or download a plain-text report
Usage limit	None - run unlimited conversions for free, no signup required

Features

⏱️

Live Time Math

Convert ms, s, min, h, days, weeks, and years instantly. Every keystroke updates the main result and the full matrix.

🔄

One-Tap Swap

Reverse From and To with the swap button. Ideal for checking reverse conversions like minutes back to hours.

📋

All Units Matrix

See your input expressed in every other unit at once - compare ms, s, min, h, days, weeks, and years side by side.

🔒

Local Device Privacy

Every operation runs in your browser with plain JavaScript. Values never leave your device.

How to Use the Time Converter

Enter the Amount you want to convert. Commas are ignored so 1,250.5 works.
Choose the From unit and the To unit from the dropdowns.
Read the large result card: the converted value, the plain sentence, and the exact factor used.
Check the All Units grid below to see your input in every other time unit instantly.
Use Swap to reverse direction, Copy Result to copy, or Download Report to save a text file with all conversions.

Understanding Time Units

Time measures duration with 60 as a key step: 60 seconds make a minute, 60 minutes make an hour, 24 hours make a day. Converting multiplies by the ratio through seconds.

When to use which unit

Use ms for code timing, seconds for sprints, minutes for meetings, hours for workdays, days for travel, weeks for projects, and years for age.

Honest limitations

This tool uses 365 days per year (31,536,000 s). Leap years add a day, so exact calendar spans need a date tool. Values beyond 1e12 s switch to exponential form.

Privacy and Client-Side Security

Privacy Guarantee: All conversions occur locally inside your browser. Your numbers and selected units are never transmitted, stored, or recorded on remote servers.

Many online converters send your inputs to a server. TinyToolzz keeps everything in-page with plain JavaScript.

Because nothing is uploaded, there is no waiting, no account, and no copy retained anywhere. Your values exist only in the tab's memory and are discarded when you close the page or click Clear.

Frequently Asked Questions

How do I convert hours to minutes?

Enter the value, choose Hour (h) as From and Minute (min) as To. The tool multiplies by 60 because 1 hour equals 60 minutes.

How many seconds are in a day?

One day equals 86,400 seconds (24 hours x 60 minutes x 60 seconds). One week equals 604,800 seconds.

What precision does the converter display?

Results are shown up to 9 decimal places with trailing zeros trimmed. Very large or very small values switch to exponential notation.

Is my conversion sent to a server?

No. All math runs locally in your browser with JavaScript. Nothing is transmitted or logged.

Can I convert in both directions?

Yes. Choose any unit as From and any as To. Use the swap button to reverse instantly. The All Units matrix shows every other unit at once.

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Time Converter

Technical Specifications

Features

Live Time Math

One-Tap Swap

All Units Matrix

Local Device Privacy

How to Use the Time Converter

Understanding Time Units

When to use which unit

Honest limitations

Privacy and Client-Side Security

Frequently Asked Questions

Related Converters