単位換算器
視覚単位の変換
チップ&ビルスプリッター
請求書とチップを即座に割り勘
割引計算機
どれだけ節約できるかを確認する
速度 / 距離 / 時間
D = R × T を視覚的に解く
年齢計算機
任意の日付からの正確な年齢
日付の違い
任意の 2 つの日付の間の日数
BMI計算機
ヘルスゾーンゲージ付きBMI
燃料費計算ツール
旅行の燃料費を可視化
ペース計算機
ペース/距離/時間ソルバー
睡眠計算機
睡眠サイクルの合間に目覚める
給与計算機
給与レート変換ツール
TDEE / カロリー計算機
体のデータからBMRとTDEEを計算
電気代計算機
電気料金見積もり
GPA計算機
加重GPA計算
Final Grade
Find the final-exam score needed to hit a target course grade
Business Days
Count business days (Mon-Fri) between two dates
Time Duration
Add or subtract two HH:MM:SS durations
Countdown
Count down to (or from) a target date and show days, hours, minutes
Work Hours & Time Card
Track daily hours worked and compute weekly pay
Unit Price & Best Deal
Compare price per unit across packages to find the cheapest deal
Budget Percentage Planner
Split a budget by percentages across categories with overage warnings
Map Scale Calculator
Convert between map distance and real-world distance using a representative fraction
Roof Pitch Calculator
Convert between rise/run, slope angle, and standard pitch labels
Stair Calculator
Plan stair rise, run, and tread depth with code-friendly guidance
Paint Coverage Calculator
Estimate gallons of paint needed for a room with deductions and coats
Tile Calculator
Estimate tile count and boxes for a floor or wall with waste margin
DMS Coordinate Converter
Convert latitude/longitude between decimal degrees and degrees-minutes-seconds
Bearing & Distance Calculator
Great-circle distance and bearing between two latitude/longitude points
Concrete Volume & Bags
Volume of slabs and columns plus bag count by yield
Tire Size Comparator
Parse and compare tire size codes like 225/45R17 by diameter and revs
Gear Ratio & RPM
Engine RPM, gear ratio, final drive, and tire diameter into vehicle speed
Time Zone Converter
Convert a time across IANA time zones using built-in Intl.DateTimeFormat
レシピスケーラー
人数に応じてレシピを調整し、単位も自動換算します。