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Products that do what Is this the best epoch converter? does
I frequently use epochconverter in my day to day work. Sick of old UI, i created new website. Completely redesigned the epoch converter with modern UI elements. Check out - https://epochconverter.dev/ Let me know if you have any improvement to it. Upvote if you liked it.
- 1AD
A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers…
2022
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- 3IM
https://github.com/siraben/ti84-forth Hi HN! For the past year I've been getting into programming in Z80 assembly (especially for the TI-84+). More recently I've been learning about the Forth programming language and after a lot of searching online (in vain) for a Forth interpreter for the TI-84, I decided to write one myself. It's been fun demoing this to others, because it's a very unexpected use of a calculator. It's my largest project to date, and I'm interested to know what the HN community thinks, please feel free to critique my code! -- Ben
2018
- 4IG
I’ve always found that online calculators tend to have bad UIs, especially on mobile. Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways. I’ve noticed that fraction calculators (especially mixed fractions) are terrible to use, even on desktop. I haven’t built one of those yet, but it’s something I’m planning to tackle soon. This is a project I’ve always wanted to work on, but I’m relatively new to this space. So far, I’ve created a collection of simple calculators focused on math and finance. I’d…
2025
- 5IB
Hello HN, I've used a lot of image converter websites to run for my daily jobs, but they required uploading my assets on their servers which I didn't like. I decided to build it myself and publish as a website for everyone to use at no cost (since the conversion happened on your browsers) I'd live to hear your thoughts about it. Cheers,
2024 · dynapik.com
- 6AF
Hey HN I built ImageConverter.dev because I got tired of “free” image converter sites that force uploads, or throttle conversions. So I made a tool that runs 100% client-side — meaning your images never leave your device. It’s built for speed, simplicity, and privacy. What it does Convert images between JPG, PNG, WebP Works offline once loaded (PWA support) How it works It uses the Canvas API and WebAssembly to handle conversions directly in the browser. There’s no upload, no tracking, no server costs, and it’s fast even on mid-range devices. Why I built it I wanted an instant, no-ads,…
Oct 2025 · imageconverter.dev
- 7TC
I work with a team spread across Sydney, London, and SF. Last month I accidentally called my Aussie colleague at 3am their time during what I thought was a "quick sync". The silence before "mate... do you know what time it is here?" still haunts me. Built this: https://timezig.com It's a timezone converter but it tells you if your meeting time sucks for the other person: - Meeting quality ratings (excellent/good/fair/poor) - Visual indicators for day/night - Shows if it's a holiday in their country - Handles weird cases like Dubai's Sunday-Thursday workweek…
2025 · timezig.com
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- 9AO
I've recently been working with real-time geoJSON data at a rate of 50+ queries per second. SaaS solutions can be prohibitively expensive at this rate, thus, I created go-reverse-geo. Data is pulled from geonames.org and is stored in MongoDB (a requirement of my current project). It is very much a work-in-progress (I wrote it this morning). Hope someone finds it useful. https://paranoia.dev/vivi/go-reverse-geo
2020
- 10IM
Hey HN. I made a micro site one recent evening to see upcoming (and recent past) timezone transitions. At my job, we have some timezone specific code where we often see spikes in metrics due to random timezone shifts around the world. Just for fun, I wanted a way to easily see where and what this timezone shift might have been, so built this mini site to do so. Its fully clientside and works by making use of the Internationalization API, so if you need an API for this you're coming to the wrong place, but feel free to yoink the code. Its just one fat index.html file. Served off my VPS via…
2025 · tz.pert.dev
- 11RA
For years I've used paper and a printed clock to organise my day. Found it way better than any list or timeline app. Played around a bit and made a digital clone to speed things up: Reassign.app (best experience is on desktop) Anyone else think of their day as a circle rather than a list? edit: it also has MCP integration (https://reassign.app/api/mcp) — my Claude already connects to Linear and Calendar, so I use it to start and plan my day. I can quickly get a skeleton of a day out and then polish until done.
May 2026 · reassign.app
- 12AS
2021 · time.lol
- 13WB
Features: 200+ unit converters in Area, Length, Mass, Speed, Temperature, and Time categories; Precision: up to 28 decimal places; Conversion formulas with examples; Neat UI with light/dark theme. Enjoy using it.
2024 · betaconvert.com
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The fastest, clutter-free Epoch & Unix timestamp converter
3d ago · timestampeasy.com
- 15AH
2022 · github.com
- 16FC
Hey, HN! Cody and Jake here, the founders of FeatureTracker (https://www.featuretracker.com). We have one simple goal, to allow creators to make data-backed decisions when building interfaces. Maybe you have a really fancy date picker and are looking for ways to scale it back. With FeatureTracker you can track the granular usage of each component of that date picker, then decide what to keep and what to cut based on actual numbers. We track specific clicks and provide a few simple data points to make you feel a little more comfortable making decisions and less like you’re driving…
2017
- 17SF
I have ignored high paying jobs/ several contracting gigs to build Xervmon.com. I would really appreciate help to test the UI for UX. I want folks who can be brutal about the tool and give a feedback on which we can improve the UI and UX. The UI does standout, but to what level it stands out, I am not sure. One catch : You need to sign up to navigate through UI. First I was shy to show my work, then angry and upset when users commented and now am shameless. Be my guest and give me feedback so I can take it as another challenge to improve the user experience.
2012
- 18IB
Hey HN! Last week I was working on a website and needed a way to synchronise visuals with live music. I've used MIDI controllers for this before, but I am travelling right now and don't have mine with me. So I had the crazy idea to build a browser extension that uses the keyboard as input and includes a sequencer. I gave myself 24 to work on it. It ended up taking longer (of course), specially since I ended up creating a demo, a small landing, docs, and an intro video. Took me one week from idea to launch (pushed quite a bit tbh). Features: - Works as a browser extension. Atm distributed…
2024 · minitap.io
- 19TT
Hi, This is my new project (https://www.timepike.com/) which tries to solve basic problem of most small agencies: tracking working hours and holidays of employees and generating invoices for clients. I know that there are many similar solutions out there. Still, I haven't found one solving this problem in really clean, intuitive and super helpful way (for employer as much as for employees). That's why I decided to build one. Any feedback is really highly appreciated! Cheers, Wiktor
2017
- 20IJ
I've just revamped my website for image-to-image conversion called Ekpic and would love to get your feedback on the new version. I have not visitors nor anything, but hey, whatever . In any case, I wanted to have good metrics for speed. I just changed the framework to astro. Still various modifications to do. All images are converted locally, that's one of the reasons I created the site. Also, I wanted something a bit more modern than the standard.
2025 · ekpic.com
- 21TT
Hello guys! I need some help reviewing, and refining the landing page for an app that I'm building: http://taskr.punchdev.com/ (and here's a screenshot in case my DNS hasn't updated yet: http://cl.ly/0M1w340S1M2T1m0W3G2I ) It's a to-do list app that differentiates itself from others by making sure you add new tasks daily. Plus, it makes it easy for the user (you) to see the status of a task thanks to colors (blue for week-long tasks, red for overdue, orange for nearly due, and green for not due yet. Bonus points: The screenshot on the right is actually made with Keynotopia! Thanks a lot…
2012
- 22VW
We've been working on Verelo website monitoring for just over six months now. Our project was created out of frustrations with existing monitoring tools while working in the DevOps team at our past employer. We consider ourselves different to what's out there today for a few reasons: - Our main goal is to provide a monitoring service which can truly help you meet and prove your SLA. This means a few critical enhancements from what's out there today. - We provide sub-minute checks. You can use us to check as regularly as every 5 seconds (for paid accounts, free beta accounts can only do 60…
2012
- 23DC
Hi HN, I’ve spent the last few months debugging a pattern I kept seeing on client sites: Ads are running, tags are installed, dashboards look fine — but Google Ads conversions are missing, inconsistent, or silently degraded. In most cases, the problem wasn’t the conversion tag itself. It was consent timing: tracking scripts firing before consent cookies set before consent Consent Mode v2 present but misconfigured conversion events firing before consent updates These setups often “look” correct in GTM or DevTools, but behave differently for a real first-time visitor. So I built a small…
Jan 2026 · consentcheck.online
- 24NA
Since I went remote(working) last year, I found it hard to track my work/focus hours. To begin with, I started with my mobile stopwatch but found it to be inefficient and distracting. I then tried some time management tools online but they were geared towards enterprises than individuals. Plus, had too many features. So, last weekend I created https://www.timemygrind.com/ - a simple focus time tracking tool that requires no login, no internet and has no ads. Once you finish your work, it shows the times in the table below. I usually pause when I take a break or go out for…
2024 · timemygrind.com
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