Construction Tools
100 free tools built for contractors, estimators, and project managers.
Integrated workflow
Run any calculator, push results to invoices, estimates, or change orders. All free. All in your browser.
Money & Documents
Invoice Generator
Create professional invoices with line items, tax, and payment tracking.
Estimate Generator
Build job estimates with contingency, markup, and scope of work.
Change Order
Generate change orders with contract adjustments and schedule impact.
Lien Waiver Generator
State-specific lien waivers — conditional, unconditional, partial, final.
Markup & Margin
Convert between markup % and margin %. Avoid the pricing mistake.
Labor Burden
Fully-loaded labor cost per hour — taxes, comp, benefits, PTO.
Contracts & Notices
Pay Application (G702/G703)
Schedule of values, % complete per line, retainage. Print for owner/architect.
Proposal Generator
Branded proposal: scope, price, terms, signature block. Save and print.
Subcontractor Agreement
Fill-in sub contract: parties, scope, price, insurance, indemnification.
Notice to Proceed
Formal authorization to commence work with commencement and completion dates.
Substantial Completion
Milestone certificate with punch list reference and warranty start.
Warranty Certificate
Workmanship warranty: scope, term, exclusions, claim procedure.
Subcontractor Back-Charge
Document costs charged to a sub: reason, line-item backup, acknowledgment.
Punch List
Itemized: location, trade, status. Sign-off ready for the field.
RFI Generator
Numbered RFI form with question, response, and cost/schedule impact.
Submittal Log
Track shop drawings and material submittals across the project.
Safety & Compliance
Toolbox Talk Generator
12 ready-to-print talks (fall, silica, confined space, more) with sign-in sheet.
JHA Builder
Job hazard analysis: task → hazards → controls with severity × probability scoring.
Safety Inspection
8-category pass/fail walk with notes per item and action items.
Incident Report
OSHA-aligned documentation for injuries, near-misses, and property damage.
OSHA 300 Log
Recordable injury log with classification, body part, and CSV export.
Confined Space Permit
OSHA Subpart AA entry permit with atmospheric monitoring and rescue procedure.
Fall Protection Clearance
Required clearance below anchor — lanyard, free fall, deceleration, safety factor.
Scaffold Load
Allowable load by duty rating (light/medium/heavy) per OSHA 1926.451.
Ladder Safety (4:1)
Setback, angle, and working height per OSHA 1926.1053.
Cash Flow & Finance
WIP Schedule
Per-job % complete, earned revenue, over/under billing with multi-job rollup.
Job Cost Tracker
Budget vs actual by cost code with variance $/% and totals.
Cash Flow Projector
12-week running balance with inflows/outflows. Flag negative weeks.
Draw Schedule
Phase-based draws, cumulative earned, and remaining to bill.
Retainage Tracker
Track held retainage across jobs. Earned-unreleased exposure.
Break-Even Calculator
Monthly fixed overhead + margin → break-even revenue and job count.
Equipment Cost Recovery
True hourly cost of owning + operating, and the rate to charge clients.
AR Aging
Open invoices bucketed by days past due. Total exposure by bucket.
Field Operations
Daily Report
Field report with weather, crew, work performed, and safety tracking.
Time Card
Weekly time card with regular/OT hours and CSV export for payroll.
Overtime Calculator
Weekly and daily OT with state rules (CA, federal). Regular, 1.5x, and 2x rates.
Payroll Prep
Multi-employee weekly payroll summary with burden, OT, and CSV export.
Schedule Creator
Visual task timeline for any project. Add tasks, see the schedule, print or copy.
Scheduling & PM
3-Week Lookahead
Pull-planning board: tasks by week, assigned trades, predecessors.
Crew Size Calculator
Crew needed for a deadline given labor hours and productivity factor.
Productivity Rates
Units per labor-hour from your past jobs. Build your own rate database.
Concrete Cure Time
Strength gain by temp + time per ACI 308R curing curves.
Weather Delay Tracker
Log weather days for delay claims with trade impact and hours lost.
Gantt Chart Builder
Visual Gantt with task bars, dependencies, today line. Save and print.
Critical Path (CPM Lite)
Forward/backward pass with float and critical-path identification.
Estimating
Cost Estimator
Estimate costs by building type, state, and quality level.
Bid Calculator
Calculate bid price with overhead, contingency, and profit margin.
SF Cost Database
Your own SF cost reference by trade, region, quality. Build as you bid.
Unit Price Book
Save and reuse your own labor + material unit prices. CSV import/export.
Assembly Estimator
6 starter assemblies (framed wall, slab, roof) editable per project.
Bid Comparison Sheet
Line up multiple sub bids side by side. Auto-flag outliers (±2σ).
Allowance Tracker
Per-item client allowance vs actual spend. Bill overages as line items.
Profit Margin Optimizer
Back-solve bid price for a target net margin after overhead allocation.
Bid / No-Bid Scorecard
10 weighted factors → go/no-go threshold. Save scorecards per opportunity.
Material Escalation
Project material inflation over your timeline. Protect long-lead margins.
Cost-Plus vs Fixed-Price
Side-by-side profit under/on/over-budget scenarios for both contract types.
Plan Takeoff Counter
Click to count fixtures, outlets, doors with running totals + invoice push.
Material Takeoffs
Concrete
Cubic yards, bags, and ready-mix cost for slabs, footings, columns.
Brick
Brick count, mortar bags, and cost for walls with openings.
Mortar
Mortar bags, sand, and cement for brick or block walls.
Cement Mix
Cement, sand, and aggregate quantities by mix ratio.
Lumber
Board feet and lumber cost for any nominal size.
Drywall
Sheets, tape, and compound for room takeoffs.
Paint
Gallons for walls, ceiling, multiple coats, and primer.
Sand
Tons and truck loads by sand type — mason, concrete, fill.
Stone & Aggregate
Cubic yards and tons for #57, crushed, pea gravel, rip rap.
Tonnage Converter
Volume to weight for 14 materials — tons, lbs, truck loads.
Asphalt
Tons, square yards, truck loads, and cost for paving projects.
Rebar
Bar count, linear feet, weight, lap splices by size and spacing.
Tile
Tiles, boxes, grout, thinset for straight, diagonal, herringbone.
Site & Structure
Square Footage
Area for rectangles, triangles, circles, L-shapes, trapezoids.
Excavation
Cubic yards, tons, and truck loads for dirt, gravel, clay.
Roof Pitch
Rise/run to degrees, rafter length, and area multiplier.
Roofing Materials
Shingles, underlayment, starter, ridge cap, drip edge, nails.
Fence
Posts, rails, pickets, concrete — wood, vinyl, chain link.
Siding
Squares, trim, fasteners for vinyl, fiber cement, wood, metal.
Deck
Boards, joists, posts, beams, railing — PT, cedar, composite.
Board & Batten
Boards, battens, fasteners, and paint for vertical siding.
Stair Calculator
Risers, treads, total run, angle, and IRC code compliance check.
Wall Framing
Studs, plates, king/jack studs, cripples, board feet, and cost.
Pipe Slope
Total fall, ending invert, slope %, grade with IPC presets.
Interior Finishes
Structural
Engineering Takeoffs (Estimates Only)
Insulation
Batts/blown-in/SPF/rigid by area and R-value. IRC R402 reference.
Gutter & Downspout
LF of gutter, downspout count, and runoff capacity per IRC R903.4.1.
Grading & Slope
Cut/fill volumes, slope %, ADA ramp check (1:12 max).
Septic Drainfield
Drainfield area by bedrooms + soil perc rate. Local code varies.
HVAC Load (Manual J Lite)
Rough BTU and tonnage by floor area + climate zone. NOT a stamped Manual J.
Electrical Service Size
NEC 220 service-size estimate. User enters demand factors per code.
Conduit Fill
Fill % check against NEC Chapter 9. User enters conduit + wire areas.
Steel Beam Estimator
Simply-supported uniform load → required S and I. NOT engineered design.
Stormwater Runoff
Rational method Q=CiA for small drainage areas. ASCE Manual 77.
Data & Reference
Material Compare
Compare material prices side by side with trend sparklines.
State Scorecard
Compare states with employment, wages, and awards data.
Unit Converter
Length, area, volume, weight, temperature, pressure.
Board Foot
Board feet from nominal dimensions with MBF pricing.
All tools run in your browser. No data sent to any server. Documents stored in localStorage.