The Concrete Calculator vs TrustTheCalcs

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

The Concrete Calculator compared with TrustTheCalcs
Detail	The Concrete Calculator	TrustTheCalcs
What it does	Free concrete slab cost estimator with material, labor and site prep breakdowns	Construction calculators that show their math
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Material, labor and delivery cost breakdowns Pre-calculated costs for common slab sizes Multiple calculator tools including rebar, yard, bag and footing No sign-up required, data stays in browser	Every constant cited to ASTM, CMHA, or datasheet Two calculation methods shown separately Free and private, no account required
What makes it different	Built by a single independent developer focused on accessible, ad-free calculation tools Transparent calculations using standard formulas so users see exactly how each number is produced Multiple concrete calculation tools sharing one consistent calculation engine	Every constant traced to named source and shown next to result Shows both methods when they disagree instead of averaging them Solves massive discrepancy in published block fill volumes Calculations run in browser with no data storage Built on version-controlled, auditable reference data modules
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	8 no change since last check
Trust Flow (Majestic)	0	5
Citation Flow (Majestic)	16	22
Referring domains (Majestic)	4	7

4 details filled in for both companies.