Launching today

calculate.at

Launching today

200+ free calculators. No signup, no clutter.

7 followers

200+ free calculators. No signup, no clutter.

7 followers

Visit website

calculate.at is a free collection of 200+ online calculators — finance, health, math, conversions, construction, science, and date/time. No signup, no ads cluttering results. Every calculator shows the formula and a worked example, not just the answer.

Free

Launch tags:Productivity•Education•Finance

Launch Team / Built With

DigitalOcean Serverless Inference55+ AI models behind one OpenAI/Anthropic-compatible API

Promoted

Maker

📌

Hey Product Hunt! 👋 I built calculate.at because most calculator sites bury the actual math under ads, popups, and forced signups. This is the opposite: pick a calculator, get your answer, and see exactly how it was calculated — formula and worked example included. 245 calculators across 7 categories: Finance (56), Conversion (43), Health (37), Math (35), Construction (28), Science (28), Date & Time (18). Every one has a short ID (e.g. CA‑0130) so you can search or share by number. No accounts, no email capture, no premium tier — just fast, static pages that load instantly. Would love feedback on which calculators to add next!

Report

1d ago

@calculate_at - This is so cool, free and no friction at all to use. Simple and clean and some interesting calculators to, some I would never even have considered. Awesome work, and I hope you launch goes well. What would be awesome would be a plugin/extension for tools like @raycast , @Google Chrome , @Safari and @Alfred

Report

2h ago

Maker

Thx fore genuine feedback 🚀

Report

2h ago

@calculate_at - no worries, Thanks.

Report

2h ago