Atualização
Source Citations Added for All Calculators
Every calculator now shows formula sources, methodology, and authoritative references for complete transparency.
Registro de Alterações
Acompanhe todas as atualizações, melhorias e novas calculadoras adicionadas ao CalcOnce. Melhoramos continuamente nossas ferramentas para garantir precisão e adicionar novos recursos com base no feedback dos usuários.
NovoAtualizaçãoCorreçãoAtualização de Dados
Novo
New Statistical Calculators
Added P-Value Calculator, Confidence Interval Calculator, and enhanced Mean Median Mode Calculator with step-by-step solutions.
Novo
Math & Science Calculator Expansion
Added 15+ new math calculators including Pythagorean Theorem, Slope, Logarithm, Square Root, LCM, GCF, and Scientific Notation calculators.
Novo
Business Finance Calculators
Added Margin Calculator, Markup Calculator, Break-Even Calculator, and Margin vs Markup comparison tool for business owners.
Novo
Date & Time Calculator Suite
Launched comprehensive date/time calculators including Business Days, Meeting Planner, Countdown, and Moon Phase calculators.
Atualização de Dados
2026 Tax Bracket Updates
Updated Income Tax Calculator with official 2026 federal tax brackets and standard deductions.
Atualização
PayPal Fee Calculator Updated
Updated PayPal fee rates for 2026 including new Checkout and Invoicing fee structures.
Atualização
Mortgage Calculator Enhancement
Added property tax and PMI calculations to mortgage calculator with live FRED mortgage rate data integration.
Correção
Moon Phase Algorithm Accuracy
Fixed moon phase calculation to use UTC dates consistently, ensuring accuracy across all time zones.
Correção
Sunrise/Sunset NOAA Compliance
Updated sunrise/sunset calculator to use correct NOAA zenith angle (90.833°) for atmospheric refraction.
Fique Atualizado
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