Free Tools
Pocket-sized math for the trades.
Simple calculators for the daily questions: what to charge, what to mark up, what to put on the quote. No signup. No tracking. Built for the truck, not the office.
Service tools
Range hood CFM calculator
Size the ventilation for your kitchen — by cooktop power or room size, with ductwork adjustments. Find the minimum CFM you need.
OpenSEER savings calculator
Compare an old AC to a higher-SEER unit and see the yearly and 20-year energy savings. A persuasive number for any HVAC upgrade quote.
OpenRooftop solar savings estimator
Enter your US ZIP code and system size — get year‑one production, monthly output, and dollar savings, modeled on 20+ years of local weather data.
OpenEV charging station locator
Find public EV charging near any US ZIP or address — connector types, fast‑charge vs Level 2, and the network, mapped. Handy for scoping an electric work van.
OpenWine & beverage temperature guide
Search 90+ drinks — wine, beer, sparkling, soft drinks — for the ideal serving and storage temperature, fridge zone, and a pro tip.
OpenThe Z‑Note (field service notes)
A medicine‑inspired standard for field documentation — issue, conditions, findings, diagnosis, work, next step. Clear, consistent notes you can copy, print, or save.
OpenFinancial tools
Markup & margin calculator
Plug in your cost and target margin to find the right price — or work backwards from price to see what you're really keeping.
OpenHourly billable rate calculator
Working backwards from a take-home target. Plug in your overhead and billable hours to see what you actually need to charge.
OpenQuote & estimate generator
Line items, tax, totals — a clean printable quote you can hand to the customer or save as a PDF. No login, no watermark.
OpenSales tax calculator
Subtotal in, total out — by US state base rate. Handy when quoting across state lines or estimating on the fly.
OpenService pricing calculator
Stop underpricing the truck roll. Enter your costs, drive time, and target profit to get a defensible minimum service charge — with the math shown.
Open"How many jobs do I need?"
Set a monthly revenue goal and average ticket — see how many jobs a day it takes to hit it. A fast reality check for your sales target.
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