Construction calculators for builders and contractors
Each calculator on this page answers one question that comes up before an estimate is finished: what a markup really leaves as margin, what an hour of labor actually costs once the burden is added, what a progress payment pays out after retainage. They run in the browser, need no account and send nothing to a server, so a figure is as easy to check from a site office as from a desk. The same arithmetic sits inside Home Builder Software, where it reads the project record instead of asking you to type the numbers again.
Calculators you can run in the browser
Markup vs margin calculator for contractors
A 20 percent markup leaves a 16.67 percent margin. This calculator converts markup to margin, margin to markup, and shows the price that reaches a target margin.
More about markup vs margin calculator for contractorsLabor burden calculator for construction hourly rates
What one field hour actually costs you: gross wage plus payroll taxes, insurance, equipment and unbillable time, divided by the hours you can put on an invoice.
More about labor burden calculator for construction hourly ratesConstruction estimate calculator with overhead and profit
Your bid price is direct cost plus general conditions, company overhead and profit, less any discount. This calculator shows each step and what profit survives the discount.
More about construction estimate calculator with overhead and profitProgress billing calculator for AIA G702 applications
Shows what you can bill on this application: work completed to date, stored materials, retainage withheld, and the payment due once previous certificates come off.
More about progress billing calculator for AIA G702 applicationsRetainage calculator for construction progress payments
Shows how much retainage comes off this progress payment, how much is held in total against the contract ceiling, and the date the balance falls due.
More about retainage calculator for construction progress paymentsChange order markup calculator
Prices a change order the way the contract does — extra quantity at the agreed unit price, changed work at cost plus overhead and profit — and shows the days it adds.
More about change order markup calculatorMaterial price escalation clause calculator
Shows how much a price escalation clause adds to or takes off a contract when the agreed material index moves between the bid date and delivery.
More about material price escalation clause calculatorConstruction draw schedule calculator
Turn a contract price into draw amounts by construction phase, with each draw as a percentage, a dollar figure and a running total that ends at exactly 100 percent.
More about construction draw schedule calculatorConstruction schedule calculator for man-hours and crew size
Turns a man-hour estimate into work days, calendar days and a finish date, after crew size, the working week, public holidays and a weather buffer.
More about construction schedule calculator for man-hours and crew sizeVAT reverse charge checker for construction
Tells you whether a construction invoice shows VAT or moves it to the customer under §13b UStG in Germany or autoliquidation in France, and what the invoice must say.
More about VAT reverse charge checker for construction
Check the same figures against a real project file
A demo runs the calculation inside the product, where it reads the budget, the awards and the invoices instead of asking for the numbers again.