Calculators that actually make sense.
EMI, SIP, BMI, percentages, dates, pace, unit conversion — and more. Private, fast, and accurate. Everything runs in your browser.
Why Renderlog Calc
Every calculator you need, nothing you don't. We built Renderlog Calc because most calculator sites are slow, cluttered with ads, and often wrong. Ours are open, honest, and built with real formulas — the same ones banks, dietitians, and statisticians use.
Built for mobile, perfect on desktop
Every tool loads in under a second, works offline after the first visit, and is fully keyboard-accessible. Try the EMI calculator on your phone during a loan call, or the BMI tool at the doctor's office.
Frequently Asked Questions
Are these calculators free?
Yes — every calculator on Renderlog Calc is 100% free. No signup, no paywall, no ads in the result. Just tools that work.
Where do the calculations happen?
Entirely in your browser. Nothing you enter (weight, salary, dates) is sent to a server. That means your data stays private and the tools work offline after the first load.
How accurate are the results?
We use the same peer-reviewed formulas used by banks (reducing-balance EMI), nutritionists (Mifflin-St Jeor), and standards bodies. Precision is double-floating-point — more than enough for any real-world decision.
Can I use these on my phone?
Yes. Every tool is fully responsive with a mobile-first layout. The bottom nav bar lets you switch categories with one tap.
Do you add new calculators?
We add tools when there's clear demand and the logic is stable. We deliberately avoid calculators whose rules change frequently (country-specific tax, live currency rates) so what we ship stays correct.