Dev tools · alternatives · 2026
24 alternatives to JSCalc.io
Build a custom online calculator!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. JSCalc.io launched in 2016; newer entries below may have overtaken it.
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I figured I needed to work on my coding skills before building the next groundbreaking AI app, so I started working on this free tool site. Its basically just an aggregation of various commonly used calculators and unit convertors. Link: https://www.calcverse.live Tech Stack: Next, React, Typescript, shadcn UI, Tailwind CSS Would greatly appreciate your feedback on the UI/UX and accessibilty. I struggled the most with navigation. I've added a search box, a sidebar, breadcrumbs and pages with grids of cards leading to the respective calculator or unit convertor, but not sure if…
2025 · calcverse.live · its alternatives →
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- 6IG
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 Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways.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 · its alternatives →
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Hi HN, I am a solopreneur in the evenings and a software engineer during the day. In the past, I have created lots of calculators for my web projects and freelancing friends. These were pretty basic, but users always welcomed them. I also used currently available builders, but the problem was that they were either slow, broke on mobile devices, had nonsense page view limits, or were expensive. Some even ticked all those boxes. So I have decided to create my own, with a simple interface, and called it Creative Widgets (if it ever takes off, I plan to add more exciting stuff like charts, etc,…
2024 · creativewidgets.io · its alternatives →
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Build website calculators with no code, just spreadsheets
2024 · calculatorstudio.co · its alternatives →
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Hi HN! I built ToolDexo - a collection of 29 free online tools because I was tired of websites that force you to sign up just to use a calculator or word counter. What's included: - Calculators: BMI, calorie, mortgage, loan, tax, grade, tip, percentage, age, compound interest - Converters: Currency (36 currencies with live rates), unit, timezone, file size - Generators: Password, QR code, favicon, color picker, Lorem Ipsum, random number - Text tools: Word counter, case converter, character counter, text compare, Markdown editor - Dev tools: JSON formatter, Base64 encoder/decoder Tech…
2025 · minitools4u.com · its alternatives →
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Build proposals, quotes, ROI, and any calculator you want!
2024 · formaloo.com · its alternatives →
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Start building the future of your company, today. Create powerful on brand calculators, lead generation forms and apps that automate your marketing and sales processes.
2019 · convertcalculator.co · its alternatives →
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Build interactive web calculators from plain text. No code.
2025 · instantcalculators.ai · its alternatives →
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Create custom interactive calculators for your website
2024 · activecalculator.com · its alternatives →
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You know that old TI calculator you used in high school, then put in a box and forgot about? Have you ever wished you had an operating system for your calculator with preemptive multitasking, dynamic memory management, a tree filesystem conforming to the FHS, and all the comforts of Unix? Well, good news: that's totally a thing that exists. I've been working on my kernel for about three and a half years now and I'm looking for new contributors to help out. It's written entirely in z80 assembly, and it's both challenging and fun to work on. There's an IRC channel for contributors or people…
2014 · its alternatives →
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I Built a Comprehensive Suite of Free Online Tools: 300+ Calculators, Converters, and Random Generators After months of coding and development, I'm excited to share my website offering a vast collection of free online calculators, unit converters, and random generators all in one place. This project was created to simplify everyday tasks and provide accurate tools for various needs. What You'll Find on My Site: Calculators: - Financial tools: ROI, APY, mortgage calculators - Business tools: Break-even, commission calculators - Mathematics: From basic to advanced functions - Health: BMI, BMR,…
2025 · calculatinghub.com · its alternatives →
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Calc – Free Online Calculator Hub
Jul 2026 · calc.seofyai.com · its alternatives →
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Crunch numbers using functional programming!
2025 · rohanphanse.github.io · its alternatives →
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Hey HN! I've been building random tools whenever I needed them over the past few months, and now I have 177 of them. Started because I was tired of sketchy converter sites with 10 ads, so I just... made my own. Some highlights for the dev crowd: Developer tools: - UUID Generator (v1/v4/v7, bulk generation): https://calcbin.com/tools/uuid-generator - JWT Generator & Decoder: https://calcbin.com/tools/jwt-generator - JSON Formatter/Validator: https://calcbin.com/tools/json-formatter - Cron Expression Generator (with…
Feb 2026 · calcbin.com · its alternatives →
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All-in-one calculator with tools for work, life, and study.
2025 · play.google.com · its alternatives →
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LineCalc▲7Free online calculator with real-time collaboration
Dec 2025 · linecalc.com · its alternatives →
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I launched my side project (JDoodle) here 10 years ago, and it has served millions of students, teachers and developers since then. Thanks for your feedback on the initial days. Launching a new product - JDoodle.ai. This is for non-technical users to build and deploy websites and web apps. Unlike other online AI coding platforms that are trying to be an online version of Cursor, we will focus on non-technical users and try to make it easier for them to build apps without seeing or touching code. AI is still maturing in coding, so we will provide the additional layers and guardrails required…
2025 · jdoodle.ai · its alternatives →
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All-in-one smart digital calculation tools
Mar 2026 · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →