SlothLab ToolsAcerca de SlothLab Tools
Última actualización: febrero 2026
Nuestra Misión
SlothLab Tools fue creado con una creencia simple: todos merecen acceso a calculadoras precisas y confiables sin comprometer su privacidad. En una era donde la mayoría de las herramientas en línea requieren registros, recopilan datos personales u ocultan funciones esenciales detrás de muros de pago, nosotros elegimos un camino diferente. Nuestra misión es proporcionar herramientas de cálculo de nivel profesional que sean completamente gratuitas, totalmente privadas y científicamente fundamentadas. Creemos que la planificación financiera, el monitoreo de la salud y el análisis técnico no deben tener barreras de acceso — son herramientas para la toma de decisiones informadas a las que todos deberían tener acceso, independientemente de su presupuesto o conocimientos técnicos.
Why We Built This
The idea for SlothLab Tools was born from a shared frustration among our team members. As software engineers and data scientists, we frequently needed quick calculations — estimating GPU VRAM for running LLMs, checking compound interest projections, or calculating calorie needs. Every time, we encountered the same problems: calculators that demanded email addresses, displayed intrusive pop-ups, or provided results based on outdated formulas without citing sources. We realized that building trustworthy, transparent calculator tools was both technically straightforward and badly needed. In late 2025, Sloth Lab Inc. began developing what would become SlothLab Tools — a privacy-first platform where every calculation runs in the user's browser, every formula is documented and cited, and every tool is available in multiple languages at no cost. Our guiding principles are simple: never collect user data, always cite our sources, keep tools free forever, and continuously improve based on user feedback and updated research.
Lo Que Ofrecemos
SlothLab Tools actualmente ofrece más de una docena de calculadoras especializadas organizadas en cinco categorías: herramientas tecnológicas para desarrolladores de IA incluyendo requisitos de VRAM y calculadoras de costos de API; herramientas financieras para interés compuesto, amortización de préstamos, comparación de poder adquisitivo y planificación FIRE; calculadoras de salud basadas en estándares de la OMS y médicos para IMC, grasa corporal, calorías y ciclos de sueño; utilidades cotidianas incluyendo una guía global de propinas, calculadora de corte de cafeína, conversor de zonas horarias y calculadora de GPA; y herramientas de cuidado de mascotas para calcular cantidades óptimas de alimentación para perros y gatos. Cada herramienta incluye contenido educativo, preguntas frecuentes y la capacidad de compartir resultados por URL.
Our Team
SlothLab Tools is developed and maintained by a dedicated team at Sloth Lab Inc. Our team brings together expertise in software engineering, data science, user experience design, and technical writing. Our engineering team specializes in building performant web applications with a focus on privacy and accessibility. We use modern web technologies including Next.js, TypeScript, and client-side computation to ensure all calculations run locally in users' browsers. Our data science expertise ensures that every calculator is built on validated, peer-reviewed formulas. We regularly review our implementations against the latest research and update our tools when more accurate methods become available. Our technical writers create the educational content, methodology documentation, and in-depth guides that accompany each tool, making complex topics accessible to everyone.
Nuestro Enfoque
Cada calculadora en SlothLab Tools está construida sobre fórmulas establecidas y revisadas por pares y fuentes de datos autorizadas. Nuestra calculadora de IMC utiliza los estándares de clasificación de la OMS. Nuestra calculadora de calorías implementa la ecuación de Mifflin-St Jeor, reconocida como una de las fórmulas de tasa metabólica basal más precisas. Las herramientas financieras utilizan fórmulas estándar de amortización y datos de paridad de poder adquisitivo del Banco Mundial. Todos los cálculos se ejecutan completamente dentro de tu navegador usando JavaScript del lado del cliente — sin solicitudes al servidor, sin almacenamiento de datos, sin cookies establecidas por nuestro sitio. También soportamos cinco idiomas (inglés, coreano, español, francés y portugués) y cada página incluye datos estructurados de Schema.org.
Our Standards
Accuracy and transparency are the foundations of everything we build. Here is how we maintain quality: Formula Verification: Every calculator undergoes a multi-step verification process. We cross-reference our implementations against published academic papers, official guidelines from health organizations, and established financial formulas. Regular Updates: We monitor updates to the data sources and formulas we use. When the World Bank updates PPP data, when new research improves calorie estimation methods, or when GPU specifications change, we update our tools accordingly. Transparent Methodology: Each tool page includes a detailed methodology section explaining exactly which formulas are used, their limitations, and links to source materials. Users should never have to wonder where a number comes from. Peer Review: Our team reviews every calculator implementation before release, checking both the mathematical accuracy and the clarity of the educational content.
Data Sources & References
We believe in full transparency about where our data comes from. Here are the primary sources behind our calculators: Health Tools: World Health Organization (WHO) BMI classification standards, Mifflin-St Jeor equation for basal metabolic rate (published in the American Journal of Clinical Nutrition, 1990), US Navy circumference method for body fat estimation (Hodgdon & Beckett, 1984). Finance Tools: World Bank Purchasing Power Parity (PPP) conversion factors and International Comparison Program data, standard compound interest and loan amortization formulas, FIRE methodology based on the Trinity Study (Cooley, Hubbard & Walz, 1998) and the 4% safe withdrawal rate research. Pet Tools: Resting Energy Requirement (RER) formulas recommended by veterinary nutritionists, American Veterinary Medical Association (AVMA) guidelines, epigenetic aging research by Wang et al. (2020, Cell Systems) for pet age conversion. Tech Tools: Official GPU specifications from NVIDIA, AMD, and Apple, real-time API pricing data from OpenAI, Anthropic, Google, and other providers, model architecture specifications from published research papers. Life Tools: Caffeine metabolism research (half-life pharmacokinetics), sleep cycle science based on 90-minute NREM-REM cycles, IANA timezone database for timezone conversion.
Company Information
SlothLab Tools is a product of Sloth Lab Inc., founded in 2025 with the mission of creating free, privacy-respecting utility tools for everyone. Mission: Provide accessible, accurate, and private calculation tools to users worldwide. Principles: Privacy-first (no data collection), scientifically grounded (peer-reviewed sources), permanently free (no premium tiers), globally accessible (5 languages supported). All our tools are available at slothlabtools.com in English, Korean, Spanish, French, and Portuguese.
Contáctanos
Valoramos tus comentarios y sugerencias. Si tienes preguntas sobre nuestras herramientas, ideas para nuevas calculadoras o notas algún problema, contáctanos en contact@slothlab.info. Para consultas relacionadas con la privacidad, utiliza privacy@slothlab.info. SlothLab Tools es desarrollado y mantenido por Sloth Lab Inc.