Calculator coverage.

How I built a fast Freelance Rate Calculator in Vanilla JS

As developers and designers, transitioning to freelance work means figuring out exactly how much to...…

I Built a Carbon Calculator Where the Emission Factor Doesn't Exist

Most emissions calculators are a lookup table with a UI bolted on. You pick "diesel," the code...…

A scientific calculator in C for terminal environments

**Advanced Terminal Calculator** – A powerful CLI scientific calculator with trig, logs, roots, base conversion, equation solver, differentiation, matrix ops, ASCII plotting, and h…

I built a detention-pay calculator for truckers in a day — unglamourous niches beat another AI wrapper

A build log: picking an unglamourous niche, shipping it as one HTML file, an SVG instrument gauge with stroke-dasharray, and cross-device sync with no email service.…

I built a free Bitcoin Opportunity Cost Calculator — would love your feedback!

I Built CausalLens — A Free, Open-Source Causal Impact Calculator for Time Series (5 Methods, Zero Setup)

I want to show you a tool I just open-sourced. It's called CausalLens, and it answers one specific...…

I’m building a free/open-source, LINUX-FIRST, symbolic calculator for desktop — looking for calculator-user feedback

I build a project calculator web app for n8n / automation folks

The Problem I freelance with n8n and the hardest part isn't building workflows — it's answering the...…

Why I Built a Scientific Calculator in Pure C for Terminal Environments

For most people, opening a calculator means launching a GUI application or typing a quick expression...…

How Many GPUs? A simple LLM inference sizing calculator

Retiring at 63 With $1.7 Million in California Means a $13,000 Annual State and Local Tax Bill Most Calculators Skip

I accidentally turned my React calculator app into a full production-grade platform

I vibecoded a clean offline brokerage calculator app (TradeRaft)

My first calculator, with the help of a friend

Show HN: AI agent token cost calculator for Codex and Claude Code loops

Estimate monthly AI coding-agent token spend and likely avoidable waste from noisy runs, logs, and repeated context reads.…

Show HN: API cost calculator – compare 28 models across 7 providers, no signup

Estimate AI API costs across 25+ models from 7 providers. Factor in batch pricing and prompt caching. Free and private.…

(Yet Another) KV cache calculator - kvanta.vcerny.cz

Why are simple 1099 tax calculators online so horribly bloated? So I built my own

Hey everyone, As a developer and independent contractor, I dread tax estimation season. But what I...…

Anita Calculators: The Technology Explained

Free US expat tax calculators (no signup, static HTML)

Plain-English FEIE, FBAR, and Foreign Tax Credit guidance for American expats — written from real experience filing across India, Qatar, China, and the U.S.…

Designing a Sleek Calculator UI with HTML5 and CSS3

Making a Calculator UI with HTML5 and CSS3 ...…

I Built a Free Metal Weight Calculator — Here's the Math Behind It

I'm not a professional developer. I'm a steel fabricator who got tired of calculating pipe weights on...…

Making a Calculator UI with HTML5 and CSS3

This tutorial explains how to build a sleek calculator UI using HTML5 and CSS. HTML...…

Built a mortgage early payoff calculator that works for Canadian mortgages

How does the W-2 vs 1099 take-home calculation actually work? (Trying to build an accurate calculator)

[Showoff Saturday] Built a stateless, pure front-end hub with 14 calculators to solve knitting math (and plugged in AI for complex sizing)

[Showoff Saturday] I built a Local LLM VRAM Calculator to instantly check if your GPU can run Llama 4, Qwen3, and DeepSeek-V4 locally

Fixed vs Variable Mortgage Calculator Canada 2026

Building a Nutrition Calculator in JavaScript: filter, map, and reduce on Objects

JavaScript's Array.prototype.filter, map, and reduce are well-known — but what about running the same...…

Build vs Buy Software: Hidden Costs Calculator for 2024

Metric Value Custom software projects exceed budget 68% Average maintenance cost per...…

Show HN: Built a Free UK Child Maintenance Calculator

Building 11 Free Finance Calculators in React: What I Learned About State, Forms, SEO, and Shipping Without a Backend

I shipped a site called Solomon Wealth Code with 11 free finance calculators (tithe, debt snowball,...…

A Geometric Calculator Inside a Neural Network

We found a neural mechanism that operates over manifolds: a general-purpose addition module inside Llama 3.1 8B which manipulates circular representations of numbers.…

Designing an FPGA Calculator from Scratch

This is a scientific BCD calculator that uses binary-coded decimals, the same internal number format HP used in its scientific……

Retiring at 62 With $1.6 Million Means Confronting a $96,000 Healthcare Gap Most Calculators Skip

Take Control of Your Debt With These Free Tools

These free debt calculators help you set up payment plans to get back in the black.…

31 Pages, 30 Days. I Split the Pre/Post Data. The Win Predated the Work.

After 41 consecutive daily content improvements, one page looked like a win: 'forward pe calculator' at position 6.7 after the May 13 update. Then I split pre/post. The ranking was…

I built 35 free Canadian financial calculators in plain HTML/CSS/JS — no frameworks, no paywalls, no BS

Building a Saju (Korean Astrology) Calculator from Scratch in Python

I built a free Korean astrology (Saju) calculator and wanted to share what makes the math...…

Personal Loan EMI Calculator – Check EMI Online – SMFG India Credit

Texas Instruments made a new flagship graphing calculator: the TI-84 Evo

There's nothing here to distract you other than "58008."…