更新
Source Citations Added for All Calculators
Every calculator now shows formula sources, methodology, and authoritative references for complete transparency.
更新日志
跟踪 CalcOnce 的所有更新、改进和新增计算器。我们根据用户反馈持续改进工具，确保准确性并添加新功能。
新增更新修复数据更新
新增
New Statistical Calculators
Added P-Value Calculator, Confidence Interval Calculator, and enhanced Mean Median Mode Calculator with step-by-step solutions.
新增
Math & Science Calculator Expansion
Added 15+ new math calculators including Pythagorean Theorem, Slope, Logarithm, Square Root, LCM, GCF, and Scientific Notation calculators.
新增
Business Finance Calculators
Added Margin Calculator, Markup Calculator, Break-Even Calculator, and Margin vs Markup comparison tool for business owners.
新增
Date & Time Calculator Suite
Launched comprehensive date/time calculators including Business Days, Meeting Planner, Countdown, and Moon Phase calculators.
数据更新
2026 Tax Bracket Updates
Updated Income Tax Calculator with official 2026 federal tax brackets and standard deductions.
更新
PayPal Fee Calculator Updated
Updated PayPal fee rates for 2026 including new Checkout and Invoicing fee structures.
更新
Mortgage Calculator Enhancement
Added property tax and PMI calculations to mortgage calculator with live FRED mortgage rate data integration.
修复
Moon Phase Algorithm Accuracy
Fixed moon phase calculation to use UTC dates consistently, ensuring accuracy across all time zones.
修复
Sunrise/Sunset NOAA Compliance
Updated sunrise/sunset calculator to use correct NOAA zenith angle (90.833°) for atmospheric refraction.