Home and Garden Calculator Hub

Paint Calculator

Estimate gallons and liters for a room. This is for planning only.

sq ft per gallon
sq ft
sq ft
Enter values and select Calculate.

Calculation uses wall area equal to two times height times the sum of length and width. Door and window areas are subtracted. You can adjust coverage and openings.

© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. Rates and costs are examples, edit inputs to match your situation. This page does not store personal data.

Soil and Mulch Volume Estimator

Plan cubic yards, cubic meters, and bag counts.

Enter values and select Calculate.

Volume equals length times width times depth. Results show cubic feet, cubic yards, cubic meters, and number of bags. Bag count is rounded up.

© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. Rates and costs are examples, edit inputs to match your situation. This page does not store personal data.

Lawn Watering Cost by State

Estimate annual water use and cost. Edit the rate if your bill is different.

This auto fills from the selected state. You can change it.
Enter values and select Calculate.

Gallons per session equals flow rate times minutes. Annual gallons equals that value times sessions per week times fifty two. Cost equals gallons times rate. Rates are sample values, check your utility bill for a precise number.

© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. Rates and costs are examples, edit inputs to match your situation. This page does not store personal data.

Houseplant Watering Interval Helper

Pick a plant, pot size, and room temperature. Get a suggested interval.

Enter values and select Calculate.

This uses a base interval for each species, then adjusts for pot size and temperature. Check soil moisture before watering. Reduce frequency in winter.

© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. Rates and costs are examples, edit inputs to match your situation. This page does not store personal data.

Plant Spacing Calculator

Estimate how many plants fit in a bed. Proper spacing supports growth, airflow, and reduces disease.

Enter values and select Calculate.
Tips:
  • Tighter spacing can increase yield but may raise risk of disease.
  • Allow extra room for plants that spread, like squash or cucumber.
  • Staggered layouts can maximize space and airflow.
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. This page does not store personal data.

Seed Starting Helper

Common seed starting problems include damping off, leggy seedlings, and inconsistent germination. Remedies include using sterile seed mix, proper drainage, sufficient light, and correct temperature.

Set your conditions and select Get suggestions.
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. This page does not store personal data.

Fertilizer Planner

Common fertilizing mistakes are overfertilizing and applying at the wrong time. Use this planner to calculate total product needed and nutrient amounts based on area and product label rate.

Enter values and calculate.
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. This page does not store personal data.

Companion Planting Guide

Companion planting may help with pest management and garden efficiency. Some combinations have research support, others are traditional practices. Results vary by location and conditions.

Select a main crop and get companion planting suggestions.
Important notes about companion planting:
  • Mixed evidence: Some relationships have research support, others are traditional practices
  • Site-specific: Results depend on your soil, climate, and local pest populations
  • Not magic: Good spacing, soil health, and pest management matter more than plant combinations
  • Experiment: Try small combinations first to see what works in your garden
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. Rates and costs are examples, edit inputs to match your situation. This page does not store personal data.

Container Size Helper

Choose the right pot size for healthy plant growth. Consider plant species, current size, and growth patterns.

Select plant details and get recommendations.
Signs your plant needs repotting:
  • Roots growing through drainage holes
  • Water runs straight through without absorbing
  • Growth has slowed significantly
  • Plant becomes top-heavy and tips over
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. This page does not store personal data.

Light Needs Assessment

Match your plants with the right light conditions. Measure your space and compare to plant requirements.

Select plant and location details for assessment.
Light level guide:
  • Low light: North windows, 2-4 hours indirect sun
  • Medium light: East/west windows, 4-6 hours filtered sun
  • Bright indirect: Near south window, 6+ hours bright light
  • Direct sun: South window, 6+ hours direct sunlight
© 2025 Home and Garden Calculator Hub. Estimates are for planning only. Check product labels, local codes, and professional guidance before purchase or use. This page does not store personal data.