更新
Source Citations Added for All Calculators
Every calculator now shows formula sources, methodology, and authoritative references for complete transparency.
更新履歴
CalcOnce に追加されたすべての更新、改善、新しい計算ツールを確認できます。ユーザーのフィードバックに基づき、精度の確保と新機能の追加に継続的に取り組んでいます。
新機能更新修正データ更新
新機能
New Statistical Calculators
Added P-Value Calculator, Confidence Interval Calculator, and enhanced Mean Median Mode Calculator with step-by-step solutions.
新機能
Math & Science Calculator Expansion
Added 15+ new math calculators including Pythagorean Theorem, Slope, Logarithm, Square Root, LCM, GCF, and Scientific Notation calculators.
新機能
Business Finance Calculators
Added Margin Calculator, Markup Calculator, Break-Even Calculator, and Margin vs Markup comparison tool for business owners.
新機能
Date & Time Calculator Suite
Launched comprehensive date/time calculators including Business Days, Meeting Planner, Countdown, and Moon Phase calculators.
データ更新
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.
修正
Moon Phase Algorithm Accuracy
Fixed moon phase calculation to use UTC dates consistently, ensuring accuracy across all time zones.
修正
Sunrise/Sunset NOAA Compliance
Updated sunrise/sunset calculator to use correct NOAA zenith angle (90.833°) for atmospheric refraction.