Pakistan's #1 Free Solar Calculators for Smarter Decisions
Calculate solar load, battery backup, savings, net metering and UPS sizing in seconds. Built specifically for Pakistani homes, businesses and installers.
All Solar Calculators in One Place
Free, fast and accurate tools — built specifically for Pakistan's solar market and tariffs.
Solar Load Calculator
Add your appliances and get total load in watts plus suggested solar system size in kW.
Open Tool →Battery Backup Calculator
Find required Ah, voltage and battery count for your desired backup hours.
Open Tool →Net Metering Calculator
Calculate net bill with import/export units and peak/off-peak rates.
Open Tool →UPS Battery Sizing
Estimate UPS load, backup minutes and right battery Ah for home or office.
Open Tool →SEO Settings Panel
Manage titles, descriptions, schema, analytics and more — no backend needed.
Open Panel →Why Pakistanis Trust JBMS Solar Calculators
Built around real Pakistani tariffs, NEPRA rates and net metering rules — not generic global formulas.
Choosing the right solar system in Pakistan is harder than ever. With WAPDA tariffs rising, load shedding returning and net metering rules changing, homeowners need more than guesswork. JBMS Solar gives you instant, accurate calculations using local Pakistani electricity rates, real appliance data and NEPRA-aligned formulas.
Whether you live in Lahore, Karachi, Islamabad, Faisalabad, Multan or anywhere else, our solar load calculator, battery calculator, solar savings calculator, net metering calculator and UPS battery calculator help you plan a system that actually fits your usage and budget.
What Our Users Say
Real feedback from homeowners and installers across Pakistan.
"Used the load calculator before buying my 5kW system. Saved me from buying an oversized inverter — paid back in 2 years!"
"The net metering calculator is spot on. Matches my actual K-Electric bill within 3%."
"As an installer I use JBMS daily for client quotes. Fast, professional, free."
Ready to Go Solar the Smart Way?
Use our calculators first — then talk to installers with confidence.
Start Free CalculationFrequently Asked Questions
Yes, 100% free with no signup. Built for Pakistani users to make solar decisions without sales pressure.
Our formulas use NEPRA-aligned tariffs and real appliance wattages. Results typically match real bills within 5%.
JBMS Solar is a free tools platform. We connect users with verified installers but never push sales.
Yes! Our PWA support lets you use them offline once visited.
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