Launching today
InovoTools
650+ free calculators and converters that show their math
2 followers
650+ free calculators and converters that show their math
2 followers
Free calculators, unit converters and PDF, text and developer tools that run in your browser, with no sign-up. Every tool shows its formula, a worked example and its limits, so you can check the answer yourself. Covers finance, business, health, math and country tax rules.
Free
Launch Team
Render Sandboxes: a computer for every agentGive every agent its own machine. Starts in under a second
Promoted
Hi Product Hunt, I'm Ammar, CTO at Inovativex.
I built InovoTools because most free calculator sites give you a number and nothing else. When the result matters, like a loan payment, a tax figure or the markup on a quote, you want to see how it was worked out.
So every tool shows:
the formula it uses
a worked example you can check by hand
its limits, plus the tax year or official source where rules change
Everything runs in your browser with no account, and text, PDF and image tools process your files locally.
There are 650+ tools so far: loan, mortgage and ROI calculators, unit converters, country tax and VAT calculators, JSON and text tools, and PDF tools like merge, split and compress. Recent additions include a solar payback calculator and a real estate ROI calculator for rental property.
You can also embed any calculator on your own site for free.
Which calculator do you wish existed? And if a result ever looks wrong, tell me. I read every comment.