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Finance, health, academics & everyday math — all in one place. Formula-verified, beautifully designed, completely free.
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Used millions of times by students, homeowners, and professionals just like you.
Loan Calculator
Monthly payments, full amortization schedule & total interest breakdown for any loan.
Calculate nowBMI Calculator
Body Mass Index with WHO health category classification and personalized guidance.
Calculate nowGPA Calculator
Grade point average from course grades & credit hours on the standard 4.0 scale.
Calculate nowMortgage Calculator
Home loan payments with PMI, taxes, insurance & complete payoff schedule.
Calculate nowCalorie Calculator
Daily calorie needs & TDEE based on age, height, weight & activity level.
Calculate now401k Calculator
Retirement savings projection with employer matching & compound interest over time.
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Every Calculator
in One Place
Pick a category below to find exactly what you need.
Loan Calculator
Monthly payments & interest
Mortgage Calculator
Home loan & payoff schedule
401k Calculator
Retirement savings planner
Percentage Calculator
Discounts, tips & markups
BMI Calculator
Body mass index
BMR Calculator
Basal metabolic rate
Calorie Calculator
Daily calorie needs & TDEE
Pregnancy Calculator
Due date & week tracker
GPA Calculator
Grade point average
Grade Calculator
Final & test grades
Citation Generator
APA, MLA, Chicago formats
Age Calculator
Exact age in years, months, days
Date of Birth Calculator
Find date of birth from age
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Designed to Trust.
Every feature engineered for speed, accuracy and privacy.
Built different. Engineered for accuracy & speed.
Every calculator runs verified formulas reviewed against academic, medical and banking standards — wrapped in a beautifully crafted interface that works instantly on any device.
Lightning Fast
Results in milliseconds. No spinners, no waiting — just instant, accurate answers.
Privacy First
Everything runs in your browser. We never store, track or share your inputs.
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Crafted to feel native on every screen — phone, tablet or desktop.
Global & Free for Everyone
No signups, no paywalls, no regional restrictions. Available in English, Spanish, Portuguese & German.
Expert Reviewed
All formulas are sourced from WHO, NIH, IRS, CFPB and ACOG. Every page shows sources and review dates.
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Beautifully designed.
Verified by experts.
Every calculator uses peer-reviewed formulas cross-checked against medical, financial and academic standards.
- 100% free forever — no limits, no signup
- Mobile-friendly and lightning fast
- Your data never leaves your browser
- Trusted by students, parents & professionals
- Sources cited from WHO, NIH, CFPB & more
Loan Calculator
Loved by millions
Real users. Real results. No exaggeration.
"The loan calculator is a lifesaver. Clean interface, accurate numbers, and the breakdown actually helped me understand my mortgage."
Priya S.
First-time home buyer
Verified User"I use the GPA and grade calculator every semester. So much better than the spreadsheet I used to maintain — instant and reliable."
Marcus T.
University student
Verified User"The BMI and calorie calculators are spot on. I recommend them to my clients all the time — trustworthy results, zero clutter."
Aisha K.
Certified nutritionist
Verified UserExpert Reviewed
All formulas verified against WHO, NIH, CFPB & government standards
100% Private
All calculations run locally in your browser — nothing is stored or shared
Always Free
No subscriptions, no hidden fees, no account required — ever
4 Languages
Available in English, Spanish, Portuguese and German
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