FREE CONSTRUCTION CALCULATORS & BUILDER TEMPLATES
Good on the tools.
Better on the numbers.
Price the job. Record the extras. Keep the paperwork moving. Simple tools for builders and subcontractors who have enough on their plate.
Free calculators. Editable templates. No subscription.
01 / DO THE NUMBERS
A little clarity.
A better next decision.
Three everyday calculations.
Free to use, whenever you need them.
YOUR SELLING PRICE
Gross profit: $2,500.00 · Markup on cost: 25.0%
Selling price = cost ÷ (1 − margin)
Planning estimates only. Check your inputs and contract terms.
02 / SORT THE PAPERWORK
The Job
Paperwork Pack.
Five reusable, browser-editable templates to give your next job a more organised start.
- 01 Job costing worksheet
- 02 Variation record
- 03 Progress claim tracker
- 04 Retention register
- 05 Practical completion checklist
One payment · reusable for your own business
Instant download after payment confirmation.
03 / KEEP IT SIMPLE
Start with a number.
Use the free calculators to check a price, an extra or an amount held.
Give it a paper trail.
Fill in a template in your browser, then print it or save it as a PDF.
Make it a habit.
Use the same clear format across your jobs. Less starting from scratch.
A FEW PRACTICAL DETAILS
Before you
get back to it.
Is this a subscription?
No. The pack is a one-off purchase. The calculators and sample template are free.
Do I need Excel or special software?
No. These are HTML templates that open in a modern browser. Fill them in and use Print → Save as PDF to keep a completed copy. Editable entries are not saved automatically.
Are these legal contracts or payment notices?
No. These are general administration worksheets, not contracts, statutory claims or legal advice. Required wording and deadlines depend on your contract and location.
Can I buy the pack now?
Yes. Pay once through Stripe, then download the pack from your private purchase page after payment confirmation. Contact us if you need help.
Where do my calculator figures go?
Calculations run in your browser. Your calculator entries are not sent to us.
CALCULATORS & PRACTICAL GUIDES
Find the tool for your next job.
Site Margin is operated by WB Built Pty Ltd. Our free tools explain their formulas and examples so you can check how each result is calculated.