Charts

Calculator charts

Charts are quick reference tools for common estimates. Use them to print, save, or share a starting point, then open the matching calculator when you need exact inputs or more personalized results.

Most useful printable charts

Start with these broad reference charts when you want a quick visual estimate before opening a calculator.

Home Air chart Dehumidifier Size Chart by Room Size & Dampness Use this dehumidifier size chart to compare room square footage, dampness level, and estimated pint capacity before opening the calculator. Aquarium chart Aquarium Heater Wattage Chart by Tank Size Use this aquarium heater wattage chart to compare tank gallons, temperature rise, and suggested heater watts before opening the calculator. Home Air chart Air Purifier CADR Chart Use this air purifier CADR chart to compare room size, clean air delivery rate, and air changes per hour. Home Projects chart Paint Coverage Chart by Room Size Use this paint coverage chart to estimate paintable wall area, two-coat coverage, and gallons to buy for common room sizes. Finance chart Mortgage Payment Chart Use this mortgage payment chart to compare sample loan amounts, rates, and monthly principal-and-interest payments. Moving chart Moving Box Chart Use this moving box chart to estimate total boxes, small boxes, and packing supply buffers by home size. Costs chart Space Heater Electricity Cost Chart Use this space heater electricity cost chart to compare heater wattage, daily runtime, kWh use, and monthly cost at an example electric rate. Costs chart Electricity Cost per Appliance Chart Use this electricity cost per appliance chart to compare common wattages, run times, and monthly cost ranges. Education chart Classroom Reward Budget Chart Use this classroom reward budget chart to plan PBIS, prize-box, and classroom incentive costs. Home Projects chart Flooring Waste Factor Chart Use this flooring waste chart to choose a waste percentage for laminate, vinyl, tile, and hardwood projects.

How to use these charts

Pick the chart closest to your planning question.
Find the row or range that matches your situation.
Use the number as a starting estimate.
Open the matching calculator for exact inputs.
Add a buffer when costs, measurements, or conditions vary.

When to use a calculator instead

Use a calculator for irregular room sizes, local prices, different rates, unusual conditions, comparing multiple scenarios, or budget-sensitive decisions.

Share or reference a chart

If a chart is useful in a classroom resource, blog post, forum answer, or planning guide, please link back to the chart page so readers can use the calculator and see the assumptions.

Home Air Charts

Quick references for humidity, dehumidifiers, air purifiers, filters, and room comfort.

Home Air chart Dehumidifier Size Chart by Room Size & Dampness Use this dehumidifier size chart to compare room square footage, dampness level, and estimated pint capacity before opening the calculator. Home Air chart Air Purifier Room Size Chart Use this air purifier room size chart to compare room volume, CADR, air changes per hour, and related sizing calculators before choosing a purifier. Home Air chart Air Purifier CADR Chart Use this air purifier CADR chart to compare room size, clean air delivery rate, and air changes per hour. Home Air chart Window AC BTU Chart Use this window AC BTU chart to compare room square footage, cooling capacity, sun exposure notes, and related AC sizing calculators. Home Air chart Mini Split BTU Chart Use this mini split BTU chart as a rough planning reference before getting a load calculation. Home Air chart Air Purifier Filter Cost Chart Use this air purifier filter cost chart to compare replacement frequency and annual ownership cost.

Aquarium Charts

Planning charts for heater watts, tank weight, stocking, filtration, and substrate depth.

Aquarium chart Aquarium Heater Wattage Chart by Tank Size Use this aquarium heater wattage chart to compare tank gallons, temperature rise, and suggested heater watts before opening the calculator. Aquarium chart Aquarium Tank Weight Chart Use this aquarium tank weight chart to estimate loaded weight for common tank sizes, then compare stand capacity and floor-planning calculators. Aquarium chart Aquarium Stocking Chart Use this aquarium stocking chart as a cautious starting point before checking species needs and filtration. Aquarium chart Aquarium Filter Flow Chart Use this aquarium filter flow chart to compare tank gallons, turnover targets, and filter GPH. Aquarium chart Aquarium Substrate Depth Chart Use this aquarium substrate depth chart to compare tank footprint, depth, and substrate bags.

Home Project Charts

Printable project charts for paint, flooring, drywall, waste, and material planning.

Home Projects chart Paint Coverage Chart by Room Size Use this paint coverage chart to estimate paintable wall area, two-coat coverage, and gallons to buy for common room sizes. Home Projects chart Paint Gallons by Room Size Chart Use this paint gallons chart to estimate paint needs for bedrooms, living rooms, and whole-room projects. Home Projects chart Flooring Waste Factor Chart Use this flooring waste chart to choose a waste percentage for laminate, vinyl, tile, and hardwood projects.

Moving Charts

Reference charts for boxes, truck size, storage, and moving-space estimates.

Moving chart Moving Box Count Chart by Home Size Use this moving box count chart to compare home size, total boxes, and a practical small, medium, large, and wardrobe box mix. Moving chart Moving Box Chart Use this moving box chart to estimate total boxes, small boxes, and packing supply buffers by home size. Moving chart Moving Truck Size Chart Use this moving truck size chart to compare bedrooms, furniture level, truck length, and related moving calculators before reserving a rental. Moving chart Storage Unit Size Chart Use this storage unit size chart to compare room count, furniture level, and common storage unit sizes.

Finance Charts

Payment, payoff, and affordability charts for quick scenario comparisons.

Finance chart Mortgage Payment Chart Use this mortgage payment chart to compare sample loan amounts, rates, and monthly principal-and-interest payments. Finance chart Loan Payment Chart Use this loan payment chart to compare common loan amounts, terms, and estimated monthly payments. Finance chart Credit Card Payoff Chart Use this credit card payoff chart to compare payment size, payoff time, and interest pressure. Finance chart Home Affordability Chart Use this home affordability chart to compare monthly income, debt load, and estimated housing budget.

Classroom Charts

Teacher-friendly charts for reward budgets, fluency checks, and classroom planning.

Education chart Grade Percentage Chart Use this grade percentage chart to compare points earned, points possible, extra credit, and common gradebook checks. Education chart Classroom Reward Budget Chart Use this classroom reward budget chart to plan PBIS, prize-box, and classroom incentive costs. Education chart Reading Fluency WPM Chart Use this reading fluency WPM chart as a planning reference for classroom progress checks, growth goals, timing, errors, and related teacher tools.

Electricity Charts

Cost charts for appliances, heating, charging, generators, and household energy decisions.

Costs chart Space Heater Electricity Cost Chart Use this space heater electricity cost chart to compare heater wattage, daily runtime, kWh use, and monthly cost at an example electric rate. Costs chart Electricity Cost per Appliance Chart Use this electricity cost per appliance chart to compare common wattages, run times, and monthly cost ranges. Costs chart Generator Wattage Chart Use this generator wattage chart to compare common household loads before sizing backup power. Costs chart EV Charging Cost Chart Use this EV charging cost chart to compare battery size, electricity rate, and estimated charge cost. Costs chart Solar Payback Chart Use this solar payback chart to compare installed cost, incentives, annual savings, and rough break-even time.