ToolsFusion
The free toolbox that never asks for your email
What it does
Free calculators, converters, and generators for developers, freelancers, and small businesses. Stripe & PayPal fees, profit margins, freelance rates, AI token costs, invoice PDF generator, QR codes, OG meta tag previews, image compression, barcode generator, and more. No account. No signup. Nothing ever leaves your browser — every tool processes your data locally, on your device.
Free calculators and converters for developers, freelancers, and businesses. Stripe fees, profit margins, JSON to CSV, Base64, and more. No account needed.
Calculate Stripe and PayPal fees to the cent, convert JSON to Excel in seconds, transform text casing, encode Base64 images — all free, all instant, no account needed. Calculate the hourly rate you actually need to charge — factoring in taxes, time off, and expenses most freelancers forget. Know exactly what to charge a client for an AI voice agent — based on real Vapi, Retell, and Bland costs, not guesswork. See exactly what PayPal takes from a payment — including international fees and currency conversion — before you invoice. Every calculation and conversion runs entirely inside your browser. We never receive, store, or log your numbers, files, or text. Not even temporarily. These tools…from thetoolsfusion.com
Does the same job
all alternatives →- TFToolHop – Fast, simple utilities for every workflowNov 2025 · toolhop.app · ▲5
ToolHop is your all-in-one browser toolbox with 200+ fast-loading calculators, converters, generators, color labs, and dev helpers. Use global search or curated categories to jump straight into the right utility, run it client-side for instant feedback, and deep-link results to your team. Whether you’re formatting copy, validating data, checking DNS, or exploring palettes, ToolHop keeps your core workflows a single tab away, and it’s entirely free, no account required. --- I built ToolHop because I was sick of the usual “free tool” bait-and-switch. Every time I needed to convert an image,…
Toolyard Free Online Tools for Everyone5d ago · thetoolyards.com · ▲132 free online tools — calculators, converters & more
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com