Planting density estimator from area and row spacing - estimated plant positions

BMI calculator from weight, height and age - exact and rounded BMI

CSS rem to pixels converter from root font size and rem value

Childcare cost estimate - weekly, monthly, annual and per-child from hours, hourly rate and child count

Fixed-rate mortgage calculator - monthly payment, total paid and total interest

Final exam score-needed calculator from current score, target and exam weight

Childcare subsidy net-cost calculator - net monthly and annual cost after subsidy and tax credit

Rule of 72 doubling-time calculator - approximate and exact years to double

Loan-to-value calculator - LTV percentage, equity amount and equity percentage

Childcare staffing ratio calculator - children per adult and adults per child

Recruiting cost-per-hire calculator from total cost and hires

Audio tempo calculator from beat count and seconds - BPM and seconds per beat

Macro-calorie calculator from protein, carbohydrate, fat and alcohol grams

Time-to-hire calculator - average days per hire and hires per 30 days

Proportional resize calculator to fit media inside a bounding box - scaled size and factor

Great-circle midpoint between two coordinates - latitude and longitude

Initial great-circle bearing between two coordinates in compass degrees

Great-circle (Haversine) distance between two coordinates in kilometers and miles

Seed count and cost estimator from planting area, seed density, waste and cost per 1000 seeds

Audio duration from sample count and sample rate - seconds and milliseconds