About DevCalc.io
DevCalc.io provides free online calculators and developer tools for professionals who need quick, accurate calculations. Launched in 2025, we currently offer 58 calculators across finance, developer tools, math, and more.
All tools are free to use with no registration required. We use display advertising to keep the site free for everyone.
What We Offer
Our calculators are organized into the following categories:
- Financial Calculators: ROI, mortgage, loan, tax, retirement planning calculators
- Developer Tools: JSON formatters, encoders, hash generators, network tools, API calculators
- Math & Converters: Percentage calculators, date/time converters, unit converters
- Other Tools: Health calculators, home improvement tools, travel calculators, educational tools
Quality & Accuracy
Each calculator is built in-house and tested for accuracy. All calculations are based on standard formulas from textbooks and industry references. If you notice any errors, please let us know.
Frequently Asked Questions
Can I link to calculators on DevCalc.io?
Yes, please feel free to link to any page.
How do I advertise on DevCalc.io?
Please use Google Ads placement targeting.
Do you have an API?
Not currently available.
Is DevCalc.io really free?
Yes, all tools are free. We use display advertising to keep the site free for everyone.
Contact Us
Questions or suggestions? We're always improving based on user feedback.
DevCalc.io is created and maintained by an independent team of developers.
Launched: 2025