About EvvyTools
Fast, practical tools built to help people and support a family.
The Story
EvvyTools is named after my son, Evan.
Evan was born with a rare genetic condition called CASK-related intellectual disability. It affects his development in significant ways and means he will likely require lifelong support and assistance. Like many families facing rare disabilities, much of our focus is on building a stable and dignified future for him.
EvvyTools is part of that effort.
The project began as a small weekend build. Like many developers, I often found myself searching for simple tools late at night. A quick calculator. A converter. Something small that solves a problem in seconds. Many of those tools exist, but they are often buried under cluttered pages, aggressive ads, or slow interfaces.
So I started building my own.
What began as a handful of calculators has gradually grown into a platform of practical utilities designed to help with everyday decisions. Mortgage math, writing tools, developer helpers, health calculators, and more. Each tool runs instantly in your browser and works on any device.
The goal is simple: build useful tools for people while creating something that can help support Evan's long-term future.
Our Mission
EvvyTools exists to provide fast, reliable tools that people can use instantly.
Whether you are calculating a tip, formatting data, checking freelance pricing, or solving an everyday problem, the goal is the same: simple tools that respect your time.
If a tool saves you five minutes or helps you make a better decision, it has done its job.
How This Site Is Funded
EvvyTools is supported through a simple freemium model. Every tool is completely free with no signup required — you can use the whole library for as long as you’d like without paying a cent. The options below are for people who want more, or who simply want to help keep the lights on.
Subscribe
$4/month
Unlock every premium feature across every tool — saved history, advanced inputs, ad-free experience.
Subscribe NewWordPress Plugin
From $29 lifetime
Embed unlimited calculators on your own WordPress site. One-time payment, lifetime license.
See pricingDonate
Any amount
Just want to help keep the site running? Drop a few dollars and say hello.
Donate
Dennis Traina
I'm Dennis, a full-stack developer and the person behind every tool on this site. I built EvvyTools because I kept Googling for simple calculators and converters that were buried under ads or locked behind signups. So I started building my own. Fast, free, and focused on actually being useful. Every tool here is something I'd want to use myself. If you find something helpful, that's the whole point.
New Tools, Straight to Your Inbox
Get notified when we launch new calculators, converters, and developer tools. No spam, no fluff. Just useful updates.