Free tools
Free tools for subcontractors
Calculators that do the takeoff math and add each room or run to one estimate, and a pay application builder that rolls forward every month. They run in your browser and save there, with no email required.
Calculators
Paving
Asphalt Calculator
Tons of hot mix, stone base and truckloads for any area and thickness, priced with your own rates.
Electrical
Box Fill Calculator
Required box volume under NEC 314.16, itemized by rule, checked against your box with the smallest box that fits.
Masonry
Concrete Block Calculator
Blocks, mortar, grout, rebar and joint reinforcement for a CMU wall, priced with your own rates.
Electrical
Conduit Fill Calculator
Fill for THHN and bare grounds in EMT, IMC, rigid and PVC against NEC Chapter 9 limits, with the smallest size that passes.
Decks
Deck Calculator
Decking boards, joists, hangers, posts, footing concrete and screws for a ledger deck, priced with your own rates.
Drywall
Drywall Calculator
Sheets by size, joint compound, tape and screws for a room, priced with your own rates.
Fence
Fence Calculator
Posts, rails, pickets and concrete bags for a run of wood fence, priced with your own rates.
Labor
Labor Burden Calculator
True cost of an employee per paid and billable hour, with payroll taxes, workers’ comp and benefits, and a billing rate at your margin.
Pricing
Markup vs Margin Calculator
Convert markup, margin and selling price both ways, and price a job to cover overhead and net profit.
Concrete
Rebar Calculator
Bars each way, laps, sticks to buy, weight and chairs for a slab or mat, priced with your own rates.
Stairs
Stair Stringer Calculator
Risers, treads, total run, stringer length and the board to buy, checked against IRC rise and run limits.
Electrical
Voltage Drop Calculator
Voltage drop in volts and percent and the smallest copper or aluminum wire that meets your target, single or three phase.
Billing and paperwork
Prefer a document?
The free templates library has fillable PDF, Excel and Word versions of estimates, change orders, lien waivers, daily reports and pay applications, including a drywall estimate that pairs with the drywall calculator.
Before you put a material price in a bid, check the construction material price trends: lumber, concrete, steel, copper wire and more, updated monthly from Bureau of Labor Statistics data.