Enter a budget. Get a material list.
Every other construction calculator works in one direction: dimensions in, cost out. SiteCalc's budget calculator runs the math backward. Tell it how much money you have, and it tells you exactly how much material that buys. 57 calculators support this. Nobody else does it.
Real example
You've got $52 left in the rebar budget. Punch that in. SiteCalc tells you that's 3 sticks of #4 rebar, 60 linear feet at 12" on center in one direction. Now you know what to ask for at the yard.
Same thing works for concrete, lumber, roofing, tile, paint, mulch. Any calculator with a material cost component can run in reverse.
Why this matters
Budgets are real constraints. A homeowner says "I've got $800 for the patio." You need to know right now whether that covers 200 square feet of pavers or 150. Running the normal calculator forward means trial and error, adjusting dimensions until you land on a price that works.
The reverse calculator skips all that. One input, one answer.
57 calculators run backward
This isn't a separate tool bolted on. The budget mode is built into 57 of the 85 calculators. Concrete, framing, roofing, paint, tile, landscape, plumbing, HVAC, electrical. Flip to "Cost to Materials" and the inputs swap. The same formula engine that goes forward goes backward, with the same precision.
Related features
- Material Prices -- 65 built-in prices you can override with your local numbers.
- Guided Projects -- run budget calculations across an entire multi-step build.
Read more: How to Calculate Concrete for a Slab
Get SiteCalc
The only construction calculator that works in both directions.