Estimate on site—even offline. BlockToBlock is available on iPhone and Android.

Independent builders

Spend less evening time rebuilding site notes in a spreadsheet.

Small builders often carry the estimating, buying and client communication workload themselves.

The field problem

Make every assumption visible before it becomes a purchase.

A faster route from site visit to a client-ready estimate without enterprise software overhead.

  1. 1
    Capture checked site measurements

    Check this stage with the person responsible before continuing.

  2. 2
    Reuse local material prices

    Check this stage with the person responsible before continuing.

  3. 3
    Add labour, transport and contingency

    Check this stage with the person responsible before continuing.

  4. 4
    Save revisions and export a professional estimate

    Check this stage with the person responsible before continuing.

Try this workflow now

Use the live independent builders simulator.

Change the working assumptions, review the quantities and download a portable starting file without creating an account.

Choose the job

Measurements Production mixes Purchasing and logistics
Online

No account. No upload. Inputs remain on this page.

Quick calculator

Boundary wall

Saved locally 0
Net wall area
Indicative blocks
Material starting cost
Assumptions to review
    See a professional estimate

    Planning aid only. Verify dimensions, structural requirements, mix design, coverage, waste, purchasing units and site conditions before ordering or building.

    BlockToBlock principle

    Fast does not mean automatic approval.

    Calculations organise the information you provide. The estimator remains responsible for measurements, specification, prices, constructability and site decisions.

    Read the calculation methodology →