Build Quantities vs Knowify: Which Is Better in 2026?
A side-by-side comparison of Build Quantities and Knowify, two productivity tools — what each does, who it's best for, and how to choose between them.
Quick verdict
Build Quantities and Knowify are both productivity tools, so it comes down to fit. Pick Build Quantities if you want Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. Pick Knowify if you want Job costing and project management software for construction contractors and trades.
Build Quantities
Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions.
- Category
- Productivity
- Rating
- Not yet rated
- Best for
- construction, calculators, estimating
Knowify
Job costing and project management software for construction contractors and trades.
- Category
- Productivity
- Rating
- Not yet rated
- Best for
- construction, contractors, job-costing
| At a glance | Build Quantities | Knowify |
|---|---|---|
| What it is | Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. | Job costing and project management software for construction contractors and trades. |
| Category | Productivity | Productivity |
| Type | Software | Software |
| Best for | construction, calculators, estimating, quantities | construction, contractors, job-costing, invoicing |
What is Build Quantities?
Build Quantities is a free construction calculation website for homeowners, trades, and estimators. Its calculators cover tasks such as asphalt, brick, concrete, gravel, sand, mulch, fill, rebar, trench excavation, and material package planning.
Each calculator keeps measurement units, formulas, assumptions, and rounding visible. Users can work in metric or imperial units and see the intermediate quantities behind the result. Material values that change by product, supplier, location, or project condition are entered by the user or stated as limitations.
The site also publishes worked examples, reference charts, methodology notes, and practical guides. Quantity estimates support planning and supplier conversations. Project drawings, specifications, local rules, and professional design still control construction decisions.
What is Knowify?
Knowify is job costing and project management software built for construction contractors and trade businesses — including commercial and residential contractors, subcontractors and specialty trades. It focuses on estimating, job costing, project management, invoicing and QuickBooks integration to help contractors run profitable jobs.
Estimating and job costing
Knowify's strength is estimating and job costing — building detailed bids and tracking actual costs against budgets in real time, so contractors can see whether jobs are profitable and catch overruns early. This financial control is central to a healthy contracting business.
Project and contract management
The platform manages projects, schedules, change orders and contracts, helping contractors coordinate work, handle the change orders that often erode profit, and keep jobs on track from start to finish.
Invoicing and payments
Knowify handles professional invoicing (including progress and AIA-style billing) and payments, helping contractors bill accurately for the work done and get paid on time — important for the cash flow construction depends on.
QuickBooks integration
A key feature is deep QuickBooks integration, syncing job costs, invoices and financial data so contractors keep accurate books without double entry, connecting the field work to the accounting.
Who it's for
Knowify is ideal for construction contractors, subcontractors and trades that want strong job costing, estimating, project management and invoicing with QuickBooks integration to run profitable jobs.
In short, Knowify gives contractors the estimating, job-costing and billing tools — tightly integrated with QuickBooks — to manage projects and protect their margins.
Why contractors choose Knowify
Knowify appeals to construction contractors and trades because it focuses on the financial control that makes or breaks a contracting business — accurate estimating and real-time job costing. Knowing whether each job is actually profitable, catching cost overruns early, and managing the change orders that so often erode margins are exactly where contractors lose money, and Knowify is built to give them that visibility. Combined with project management, progress/AIA-style invoicing and deep QuickBooks integration, it connects the field work to the accounting in a way general tools don't.
Getting started and who it suits
Setting up Knowify involves configuring your estimating, job-costing and billing to match how you work, and connecting QuickBooks so financial data syncs without double entry. Once running, contractors build bids, track costs against budgets in real time, manage projects and change orders, and invoice accurately for progress — keeping jobs profitable and cash flowing. For construction contractors, subcontractors and trades — commercial or residential — that want strong job costing, estimating and billing tied tightly to QuickBooks, Knowify is a purpose-built platform for running profitable jobs.
Key differences at a glance
- Purpose: Build Quantities is Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. Knowify, by contrast, is Job costing and project management software for construction contractors and trades.
- Category & type: both sit in Productivity, and both are offered as software.
- Best suited for: Build Quantities leans toward construction, calculators, estimating, whereas Knowify leans toward construction, contractors, job-costing.
- Community rating: Build Quantities is not yet rated vs Knowify is not yet rated. Ratings are community-submitted and change over time.
Build Quantities vs Knowify: which should you choose?
Build Quantities and Knowify both serve the productivity space, so the best choice depends on your priorities. Choose Build Quantities if you want Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. Choose Knowify if you want Job costing and project management software for construction contractors and trades.The smartest move is to try each one's free tier or trial on a real task — that's the fastest way to feel the difference and pick the tool you'll actually stick with.
Frequently asked questions
Is Build Quantities better than Knowify?
It depends on what you need. Build Quantities is Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. Knowify is Job costing and project management software for construction contractors and trades. Both are productivity tools, so the right pick comes down to your specific priorities, budget and workflow.
What's the main difference between Build Quantities and Knowify?
Build Quantities focuses on Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions. while Knowify focuses on Job costing and project management software for construction contractors and trades. Read the full breakdown above and check each tool's site for current features and pricing.
Can I use both Build Quantities and Knowify?
In many cases, yes — teams often use complementary tools together. Whether it makes sense depends on overlap in functionality and your budget. Try the free tier or trial of each to see how they fit your stack before committing.
Which is cheaper, Build Quantities or Knowify?
Pricing changes often, so check each tool's pricing page for the latest. Many tools offer a free tier or trial, which is the best way to evaluate value for your specific usage before you pay.