A field guide to twelve small, honest tools

One question each, answered plainly.

Every tool here does exactly one thing — tells you whether your truck can tow that trailer, what size heat pump a house needs, whether a company is what it claims. No sign-ups, no fluff. Pick the one that fits your question.

Free & runs in your browser No trackers, nothing sent to a server Sources cited & how it's built

On the road

For RV owners, tow-vehicle buyers, and anyone planning a long trip.

HitchMath

Whether your truck can safely tow a given RV or trailer — the payload and hitch math done for you.

For: truck & trailer buyers

Passport Timeline

Whether a renewed or new passport will arrive before your trip, given current processing times.

For: travelers with a deadline

RV Winterization

When to winterize your RV for your location, plus a step-by-step method guide.

For: RV owners in cold country

Park Pass Break-Even

Whether an annual national-park pass pays for itself across the trips you're actually planning.

For: road-trip & park visitors

Around the house

For homeowners sizing equipment before spending real money on it.

Heat Pump Sizer

What size cold-climate heat pump your home needs, matched against a finder of 8,752 real models.

For: homeowners going electric

Backup Power

What size generator or battery an outage calls for — with the 20-year cost of each option.

For: homeowners weighing backup

In the field

Quarry — hunting regulations and draw odds, kept current from official state sources.

Quarry · Hunting Regs

Season dates, bag limits, and license rules — all fifty states in one plain-language place.

For: hunters checking the rules

Quarry · Draw Odds

Your odds of drawing a hunt tag, built from published draw data across 30 states.

For: tag applicants & planners

Shipping & business

For anyone shipping freight or sizing seasonal costs.

Peak Surcharge

What UPS, FedEx, and USPS peak-season surcharges add to a shipment, compared side by side.

For: shippers & small sellers

Public records & due diligence

Official U.S. government data, pulled straight to your screen.

Company Background Check

Whether a U.S. company is legit — four official government sources gathered into one report.

For: anyone vetting a company

FilingSheet Chrome

Turns a company's SEC financials into a clean spreadsheet in one click.

For: investors & analysts

FilingScout Chrome

Full-text search across every SEC filing since 2001, right from your browser.

For: researchers & the curious

How these tools are built

Every tool here ships against the same standard, and it doesn't move:

The method is published. Every constant is sourced and every formula is on the page — if we can't show the math, we don't ship the tool.
Conservative by default. When a judgment call exists, the tool leans safe. We'd rather say "cutting it close" than be flattering and wrong.
It runs in your browser. No account, no tracker, nothing sent to our server — calculators never leave your device; data tools talk straight to the official source.
It says what it can't know. Every tool names the limits of its data, on the page, in plain language.

Each tool's own page carries its methodology and sources.