BuildToDoGood

Honest calculators and tools for people who do real work — backyard chickens, fly fishing, woodturning, motorcycle maintenance, the actual hobby. No AI fluff. No 47-step "ultimate guide" listicles. Tools that answer the question and let you get back to it.

This is a one-person operation in Wilmington, Delaware. The site is named what it's named because building useful things for ordinary people felt worth doing. That's the whole pitch. No nonprofit, no mission statement on every page, no donation request.

Each niche below has a working calculator and is honest about money: some links to product pages on eBay are affiliate links and I earn a small commission. That money pays for the time. I tell you when the cheap option is fine and the expensive option isn't worth it, because that's how I'd want to be told.

Hobbies and Trades

BirdingFeeder seed mix by species ChickensFeed cost by breed and life stage GardeningSoil test interpreter AquaponicsFish-to-plant ratio ForagingDehydration ratios AquariumTank volume calculator Fly FishingLeader and tippet sizing SailingApparent wind angles KayakingPaddle length selector CyclingFrame size by inseam MotorcycleChain wear measurement ArcheryArrow spine calculator ClimbingGrade converter (YDS/UIAA/Font) Disc GolfBeginner disc selector Darts501 checkout chart AstronomyTelescope magnification WoodturningBowl blank sizing PotteryCone-to-temperature LeatherworkingStitches per inch Coffee RoastingDTR calculator Model RailMin curve radius by scale

About the money

Some links go to eBay product pages with an affiliate tag. If you buy through one I get a small commission. Your price is unchanged. I recommend the gear I'd actually buy with my own money, including the cheap option when the cheap option is fine. The bias of most product reviews online is toward the expensive thing because the expensive thing pays a bigger commission. This site does the opposite when honesty calls for it.

Who runs this

A person in Wilmington, Delaware who has spent years in construction estimating and software building. Email coming when the site gets enough mail to need one. For now: the tools speak for themselves.