Stop guessing. Know exactly what to order.

Tonnage, truckloads, and cost — with swell factor, shrinkage, and real densities. Not the garbage numbers from free tools.

No credit card. Cancel anytime.
Material selection with swell factor
Results — volume, tonnage, truckloads

Pick material → enter dimensions → get results with swell factor applied

Free calculators give you volume. We give you the right answer.

Free Online Calculators

  • No swell or shrinkage
  • Generic densities
  • No trucking or cost estimates
  • Only basic volume
  • No way to save or export
  • Built by developers who've never been on site

Swell Factor

  • Swell & shrinkage factors built in
  • 16+ materials with real wet/dry densities
  • Trucking, hauling & cost tracking
  • Retaining wall, concrete, French drain calculators
  • PDF reports & project organization
  • Built by a contractor
Draw any shape on the grid

Draw any shape

Job sites aren't rectangles. Click to draw irregular polygons — ponds, odd lots, whatever. Area updates as you draw.

3D preview before you calculate

See your shape rendered in 3D with exact dimensions. Verify inputs before running the numbers.

3D retaining wall preview

4 calculators. Everything you need.

Material Calculator

Volume, tonnage, truckloads, swell/shrinkage, cost

Concrete Calculator

Slabs, footings, curbs + rebar counts

Retaining Wall

Block counts, caps, backfill, drainage, base gravel

French Drain

Drainage rock, pipe displacement, fabric, topsoil

Swell & shrinkage factors
16+ materials + custom
Trucking & hauling cost
PDF reports
Project organization
Works on phone
"I built this because every free calculator was missing swell factor, shrinkage, and trucking. That's where the money goes."

Tyler — Contractor & Founder

Swell Factor on phone
No App Store

Take it to the job site

Add to your home screen. Works like a native app — full screen, fast, one tap away.

Simple pricing

3-day free trial. No charge until day 4.

Most Popular

Pro

Solo contractors

$29/mo

or $249/yr (save 28%)

  • All 4 calculators
  • All shapes + custom drawn
  • 16+ materials + custom
  • Trucking & cost tracking
  • Unlimited saves, PDF export

Team

Crews & small companies

$59/mo

or $499/yr (save 30%)

  • Everything in Pro
  • Up to 5 team members
  • Shared projects & materials
  • Role management

Questions

Stop guessing. Start calculating.

3 days free. No card. Cancel anytime.