FREE BROWSER CALCULATOR
Construction Job Profit Calculator
Check revenue, costs, gross profit, contribution, margin and markup. Compare estimated with actual or forecast figures for one job.
PRACTICAL TOOLS
Useful tools for specific problems
Focused calculators and working systems built around the same practical approach as Mercer Lane Press books and guides.
Construction estimating and job-costing tools
Start with a free arithmetic check when you already know the cost base, or use the full Excel estimating spreadsheet when scope, takeoff, cost build-up, review, client output and post-job learning need to stay connected.
FREE BROWSER CALCULATOR
Contractor Markup & Margin Calculator
Enter a cost base and either a markup or target margin. See the selling price, profit amount, markup and true margin side by side.
DOWNLOADABLE MICROSOFT EXCEL SYSTEM
Construction Estimating & Job Costing Toolkit PRO
Two focused Excel desktop workbooks: Estimate & Quote Builder and Job Cost & Profit Control. Complete v3.2 package: US$19.99 plus applicable tax, one-time purchase.
Tools support decisions; they do not replace the work behind them
A calculator can check arithmetic. A workbook can make assumptions visible. Neither can tell you automatically whether the project scope is complete, whether a labour assumption is realistic, whether a subcontract quotation covers the same work, or whether your business is recovering its costs consistently.
Where a tool depends on business-specific inputs, use your own current information and appropriate professional advice where needed.
HR tools
Use a focused free tool for a single calculation or review, then move into the complete toolkit when recurring HR work needs to stay connected.
FREE BROWSER CALCULATOR
PTO Accrual Calculator
Calculate PTO earned per period, accrued PTO to date, available balance, days equivalent and projected year-end balance from your own policy figures.
Calculate PTO accrual →FREE DOWNLOAD + BROWSER TOOL
Free Performance Review Starter Kit
An Excel workbook, editable Word form, A4 and US Letter PDFs, and an optional client-side AI Review Prompt Builder. One employee and one review at a time; no signup required.
Use the free review tool →COMPLETE HR SYSTEM
HR Manager Toolkit + AI Productivity System
31 Excel sheets for recurring HR work, 48 HR prompts and 22 editable form designs. $24.99 USD, one-time purchase.
Explore the complete HR toolkit →Family admin tools
A practical working system for household tasks, dates and follow-ups.
EXCEL WORKBOOK + PRINTABLE BUNDLE
Family Admin Operating System
Clean and demo Excel workbooks, a 15-page Quick Start and ten printable pages in A4 and US Letter. £7.49, one-time purchase. Microsoft 365 desktop Excel required.
Explore the family admin bundle →FREE WEEKLY RESET PLANNER
Make a plan for your next two weeks
Turn a few household tasks, dates and replies to chase into a printable reset plan. Choose the next action, owner and checkpoint date. No signup or Excel needed.
Put the operating method into practice
Calculate one verified maintenance rule by date or mileage with the free browser tool. For recurring records across several vehicles, explore the Small Fleet Maintenance System, a separate Excel workbook and forms product. The book teaches the method; the digital product supplies working files. The book is sold separately.