About MyTrigCalculator
Our Mission
MyTrigCalculator.com exists to help students, professionals, and everyday problem-solvers understand trigonometry and apply it confidently. We believe that powerful mathematical tools should be free, accessible, and easy to use.
The Story Behind the Calculator
MyTrigCalculator.com was created by Matt, a construction professional with over a decade of experience applying trigonometry in the field. From calculating roof pitches and stair stringers to laying out foundations and framing angles, trigonometry is a daily tool in construction work.
After years of using various online calculators and often finding them clunky, limited, or buried under ads, we decided to build something better. We wanted a calculator that was:
- Fast and intuitive - Enter values and get results instantly
- Visually clear - See the triangle diagram update in real-time
- Practically useful - Support for feet and inches, the units tradespeople actually use
- Educational - Show the formulas and explain the math, not just spit out numbers
- Free and accessible - No account required, works on any device
Who This Is For
Students
Learning trigonometry in school? Use our calculators to check your homework, visualize concepts, and understand how the formulas work.
Teachers
Create examples for your classroom, demonstrate triangle relationships visually, and give students a trusted resource for practice.
Construction Workers
Calculate angles for cuts, verify measurements on-site, and solve real-world problems quickly. Works great on mobile devices.
DIYers & Hobbyists
Building a deck? Hanging a TV at an angle? Figuring out how much material you need? We've got you covered.
Engineers & Architects
Quick verification of calculations, back-of-napkin estimates, or teaching concepts to clients and team members.
Anyone Curious
Trigonometry is everywhere - from video games to architecture to nature. Explore and learn at your own pace.
Our Commitment to Quality
Every calculator on this site is built with care:
- Accurate calculations using standard mathematical formulas and IEEE 754 double-precision arithmetic
- Thoroughly tested against known values and edge cases
- Continuously improved based on user feedback and real-world use
- Privacy-focused - your calculations stay in your browser; we don't collect your data
While our tools are great for education and quick calculations, we always recommend verifying results for critical professional applications. See our Terms of Service for more details.
What We Offer
Beyond our flagship right triangle calculator, we provide a full suite of trigonometry tools:
Browse our blog for tutorials, guides, and deep dives into trigonometry concepts.
Get in Touch
Have a question, suggestion, or found a bug? We'd love to hear from you. Your feedback helps us make these tools better for everyone.