Free calculators
No account, no signup, and they work on a phone. Each one runs the same engine as the paid module it comes from, on a narrower scope — the numbers are whole, cited, and never blurred. What the subscription buys is the document: the stamped report, the filled jurisdiction sheet, and the whole schedule instead of one row.
Florida Product Approval & Miami-Dade NOA search
Search 4,414 Florida Product Approvals and Miami-Dade Notices of Acceptance, filter to the ones that are actually approved and still in force, and open the approval document.
Overflow scupper sizing — ASCE 7-22 + IPC
Size one secondary (overflow) scupper: the hydraulic head dh from ASCE 7-22 Table C8.2-3, the overtopping and capacity checks against your parapet, and the rain load R — every step cited, and the same engine the paid module runs.
Section properties calculator — AISC, AISI, NDS, CMU
A, I, S, Z, r, J and the centroid for a published AISC, SSMA, NDS or CMU section, a custom cold-formed profile, or a solid rectangle, tee or circle — each one from the same engine the paid module runs, with the document it came from named.
NEC feeder & service sizing — 120/240 V dwelling
Size one 120/240 V dwelling feeder or service run: conductors, neutral, EGC, raceway fill, burial cover, the structure disconnect, the grounding electrode conductor and voltage drop — thirteen determinations, each with its NEC article, from the same engine the paid module runs.
Occupant load calculator — IBC 2024 Table 1004.5
Occupant load from IBC 2024 Table 1004.5, then the required egress width, the minimum number of exits and the travel distance limit — with the gross/net basis stated on every answer and the clause cited on every line.