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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.
Calculadora de Préstamos
Monthly payments, full amortization schedule & total interest breakdown for any loan.
Calcular ahoraCalculadora de IMC
Body Mass Index with WHO health category classification and personalized guidance.
Calcular ahoraCalculadora de Promedio
Grade point average from course grades & credit hours on the standard 4.0 scale.
Calcular ahoraCalculadora de Hipoteca
Home loan payments with PMI, taxes, insurance & complete payoff schedule.
Calcular ahoraCalculadora de Calorías
Daily calorie needs & TDEE based on age, height, weight & activity level.
Calcular ahoraCalculadora 401k
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.
Calculadora de Préstamos
Pagos mensuales e intereses
Calculadora de Hipoteca
Hipoteca y cronograma de pago
Calculadora 401k
Planificador de ahorro para jubilación
Calculadora de Porcentaje
Discounts, tips & markups
Calculadora de IMC
Índice de masa corporal
Calculadora de TMB
Tasa metabólica basal
Calculadora de Calorías
Daily calorie needs & TDEE
Calculadora de Embarazo
Fecha de parto y semanas
Calculadora de Promedio
Promedio de calificaciones
Calculadora de Notas
Notas finales y de exámenes
Generador de Citas
Formatos APA, MLA, Chicago
Calculadora de Edad
Exact age in years, months, days
Calculadora de Fecha de Nacimiento
Find date of birth from age
Built Different.
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.
Privacidad Primero
Everything runs in your browser. We never store, track or share your inputs.
Pixel Perfect
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.
Accurate answers in 3 steps
Designed to be fast, intuitive and reliable — no learning curve, no signup required.
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Browse 13 professional tools across finance, health, math & academia — or search directly from the homepage.
Ingresa tus Valores
Fill in your numbers using our clean, focused forms. Helpful labels and tooltips guide you at every step.
Obtén Resultados Instantáneos
Receive formula-verified answers in milliseconds with clear breakdowns, charts, and easy-to-read summaries.
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
- Amigable con móviles y ultrarrápido
- Your data never leaves your browser
- Trusted by students, parents & professionals
- Sources cited from WHO, NIH, CFPB & more
Calculadora de Préstamos
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% Privado
All calculations run locally in your browser — nothing is stored or shared
Siempre Gratis
No subscriptions, no hidden fees, no account required — ever
4 Languages
Available in English, Spanish, Portuguese and German
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