Skip to main content

Coast FIRE Planner vs BuildWire Calc

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

Coast FIRE Planner compared with BuildWire Calc
DetailCoast FIRE Planner logo Coast FIRE PlannerBuildWire Calc logo BuildWire Calc
What it doesFind the month you can stop saving for retirement Offline calculators for electricians, builders and HVAC technicians
StageNot given Not given
FoundedNot given Not given
Based inCA US
Pricing modelFree Freemium
PricingNot given Free: nine calculators (voltage drop, Ohm's law, watts to amps, concrete slab, roof pitch, board feet, BTU, CFM, BTU to kW), no time limit. Pro: $9.99 per year or $19.99 lifetime (one payment, no renewal).
Key features
  • Shows the exact month you can stop saving
  • Runs 1,000 simulated markets to show odds of success
  • What-if scenarios for savings, returns, and fees
  • Accounts for investment fees and contribution raises
  • Share links to compare plans with others
  • No sign-up required
  • Calculations run in browser, data not stored
  • Shows formulas and assumptions transparently
  • Wire sizing and voltage drop calculations
  • Conduit fill and box fill calculations
  • Offline operation with no network required
  • Transparent calculation steps and NEC warnings
  • Job organization and PDF/CSV export
  • Motor and generator sizing calculators
  • Power and conversion calculators
  • Building calculations for concrete and roof pitch
  • No ads and no account required
  • Private with data staying on device
What makes it different
  • Answers when you can stop saving, not just how much you need
  • No sign-up, no data stored, free to use
  • Shows odds of success with Monte Carlo simulations
  • Plain language explanations without financial jargon or hype
  • Works completely offline with no network or cellular signal required
  • Private by design with no account, no ads, and calculations never leaving your device
  • Shows exact NEC formulas and calculation steps so you can verify results before fieldwork
  • Over 35 specialized calculators covering electrical, building and HVAC trades
  • Tested code with automated tests against independently worked examples
Community votes00
DR (Domain Rating by Ahrefs)2 +2 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)1613
Referring domains (Majestic)21

5 details filled in for both companies.

More alternatives to Coast FIRE Planner More alternatives to BuildWire Calc

Help centre