quicksheet-epoch

Unix timestamp / epoch converter extension for QuickSheet

Convert between Unix timestamps and human-readable dates — right on your desktop wallpaper or terminal. No network calls. No API keys. Pure BCL math.

Commands

Cell value	What it shows
epoch: now	Current Unix timestamp + UTC + local time + ISO 8601
epoch: 1700000000	Epoch (seconds) → date in UTC, local, ISO, with age
epoch: 1700000000000	Epoch (milliseconds, auto-detected) → same
epoch: 2025-01-01	ISO date → Unix seconds + ms
epoch: diff 1700000000 1750000000	Time difference between two timestamps
epoch: add 1700000000 30d	Add a duration to a timestamp

Duration format (for epoch: add)

Suffix	Meaning	Example
y	years	1y
d	days	30d, -7d
h	hours	4h
m	minutes	15m
s	seconds	3600s

Negative durations use a - prefix: epoch: add 1700000000 -7d

Date input formats (for epoch: <date>)

• 2025-01-01
• 2025-01-01T12:34:56
• 2025-01-01T12:34:56Z
• 2025-01-01 12:34:56
• 01/15/2025

Example output

epoch: now
🕐 Now
Unix:  1779516227
Ms:    1779516227224
UTC:   2026-05-23 06:03:47 UTC
Local: 2026-05-22 23:03:47 -07:00
ISO:   2026-05-23T06:03:47.2246085+00:00

epoch: 1700000000
🔢 Epoch → Date (s)
Input: 1700000000
UTC:   2023-11-14 22:13:20 UTC
Local: 2023-11-14 14:13:20 -08:00
ISO:   2023-11-14T22:13:20.0000000+00:00
Age:   2y 190d ago

epoch: diff 1700000000 1750000000
⏱ Time Diff
T1:    2023-11-14 22:13:20 UTC
T2:    2025-06-15 15:06:40 UTC
Diff:  578d 16h (after)
Days:  578.69
Hrs:   13888.52
Secs:  50000000

epoch: add 1700000000 30d
➕ Epoch Add
Base:   2023-11-14 22:13:20 UTC
Add:    30d (add)
Result: 2023-12-14 22:13:20 UTC
Unix:   1702592000
ISO:    2023-12-14T22:13:20.0000000+00:00

Install

ext: github:Deskworks/quicksheet-epoch

Or clone and use a local path:

ext: /path/to/quicksheet-epoch

Requirements

• .NET 9 SDK
• QuickSheet

License

MIT