🏗️ Free Construction Calculators
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Free precision calculators for Solar, Barns, Pool & more. Built for US, UK & Australia professionals. No signup ever.
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3 tools
SOLAR
Panel Angle
Cable Size
Charge Controller
⏳ Coming Soon
SWIMMING POOL
Water Volume
Salinity
Shock
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WHY BURJCALC?
Imperial & Metric
Every calculator has a toggle. Switch instantly between US feet/dollars and UK metres/pounds.
✓ Works for US, UK, AU & CA
Instant Results
Zero signup. Zero email. Enter numbers, click Calculate. Get your answer in under 1 second.
✓ No account ever required
Job Site Ready
Big thumb-friendly buttons. Works perfectly on any phone, tablet, or laptop on the job site.
✓ No app install needed